[maven-release-plugin] prepare for next development iteration

Update README to include gradle project set up options

README.md

@@ -67,10 +67,29 @@ In your Maven project, add this dependency:
 <dependency>
     <groupId>io.github.amithkoujalgi</groupId>
     <artifactId>ollama4j</artifactId>
-    <version>1.0.47</version>
+    <version>1.0.70</version>
 </dependency>
 ```
 
+or
+
+In your Gradle project, add the dependency using the Kotlin DSL or the Groovy DSL:
+
+```kotlin
+dependencies {
+
+    val ollama4jVersion = "1.0.70"
+
+    implementation("io.github.amithkoujalgi:ollama4j:$ollama4jVersion")
+}
+ ```
+
+```groovy
+dependencies {
+    implementation("io.github.amithkoujalgi:ollama4j:1.0.70")
+}
+```
+
 Latest release:
 
 ![Maven Central](https://img.shields.io/maven-central/v/io.github.amithkoujalgi/ollama4j)
@@ -110,6 +129,16 @@ make it
 Releases (newer artifact versions) are done automatically on pushing the code to the `main` branch through GitHub
 Actions CI workflow.
 
+#### Who's using Ollama4j?
+
+- `Datafaker`: a library to generate fake data
+    - https://github.com/datafaker-net/datafaker-experimental/tree/main/ollama-api
+- `Vaadin Web UI`: UI-Tester for Interactions with Ollama via ollama4j
+    - https://github.com/TEAMPB/ollama4j-vaadin-ui
+- `ollama-translator`: Minecraft 1.20.6 spigot plugin allows to easily break language barriers by using ollama on the
+  server to translate all messages into a specfic target language.
+    - https://github.com/liebki/ollama-translator
+
 #### Traction
 
 [![Star History Chart](https://api.star-history.com/svg?repos=amithkoujalgi/ollama4j&type=Date)](https://star-history.com/#amithkoujalgi/ollama4j&Date)
@@ -125,15 +154,15 @@ Actions CI workflow.
 - [x] Update request body creation with Java objects
 - [ ] Async APIs for images
 - [ ] Add custom headers to requests
-- [ ] Add additional params for `ask` APIs such as:
+- [x] Add additional params for `ask` APIs such as:
     - [x] `options`: additional model parameters for the Modelfile such as `temperature` -
       Supported [params](https://github.com/jmorganca/ollama/blob/main/docs/modelfile.md#valid-parameters-and-values).
-    - [ ] `system`: system prompt to (overrides what is defined in the Modelfile)
-    - [ ] `template`: the full prompt or prompt template (overrides what is defined in the Modelfile)
-    - [ ] `context`: the context parameter returned from a previous request, which can be used to keep a
+    - [x] `system`: system prompt to (overrides what is defined in the Modelfile)
+    - [x] `template`: the full prompt or prompt template (overrides what is defined in the Modelfile)
+    - [x] `context`: the context parameter returned from a previous request, which can be used to keep a
       short
       conversational memory
-    - [ ] `stream`: Add support for streaming responses from the model
+    - [x] `stream`: Add support for streaming responses from the model
 - [ ] Add test cases
 - [ ] Handle exceptions better (maybe throw more appropriate exceptions)
 

docs/docs/apis-ask/chat.md

@@ -1,172 +0,0 @@
----
-sidebar_position: 7
----
-
-# Chat
-
-This API lets you create a conversation with LLMs. Using this API enables you to ask questions to the model including 
-information using the history of already asked questions and the respective answers.
-
-## Create a new conversation and use chat history to augment follow up questions
-
-```java
-public class Main {
-
-    public static void main(String[] args) {
-
-        String host = "http://localhost:11434/";
-
-        OllamaAPI ollamaAPI = new OllamaAPI(host);
-        OllamaChatRequestBuilder builder = OllamaChatRequestBuilder.getInstance(OllamaModelType.LLAMA2);
-
-        // create first user question
-        OllamaChatRequestModel requestModel = builder.withMessage(OllamaChatMessageRole.USER,"What is the capital of France?")
-             .build();
-
-        // start conversation with model
-        OllamaChatResult chatResult = ollamaAPI.chat(requestModel);
-
-        System.out.println("First answer: " + chatResult.getResponse());
-
-        // create next userQuestion
-        requestModel = builder.withMessages(chatResult.getChatHistory()).withMessage(OllamaChatMessageRole.USER,"And what is the second largest city?").build();
-
-        // "continue" conversation with model
-        chatResult = ollamaAPI.chat(requestModel);
-
-        System.out.println("Second answer: " + chatResult.getResponse());
-
-        System.out.println("Chat History: " + chatResult.getChatHistory());
-    }
-}
-
-```
-You will get a response similar to:
-
-> First answer: Should be Paris!
-> 
-> Second answer: Marseille.
-> 
-> Chat History:
-
-```json
-[ {
-    "role" : "user",
-    "content" : "What is the capital of France?",
-    "images" : [ ]
-  }, {
-    "role" : "assistant",
-    "content" : "Should be Paris!",
-    "images" : [ ]
-  }, {
-    "role" : "user",
-    "content" : "And what is the second largest city?",
-    "images" : [ ]
-  }, {
-    "role" : "assistant",
-    "content" : "Marseille.",
-    "images" : [ ]
-  } ]
-```
-
-## Create a conversation where the answer is streamed
-
-```java
-public class Main {
-
-    public static void main(String[] args) {
-
-        String host = "http://localhost:11434/";
-
-        OllamaAPI ollamaAPI = new OllamaAPI(host);
-        OllamaChatRequestBuilder builder = OllamaChatRequestBuilder.getInstance(config.getModel());
-        OllamaChatRequestModel requestModel = builder.withMessage(OllamaChatMessageRole.USER,
-                "What is the capital of France? And what's France's connection with Mona Lisa?")
-            .build();
-
-        // define a handler (Consumer<String>)
-        OllamaStreamHandler streamHandler = (s) -> {
-           System.out.println(s);
-        };
-
-        OllamaChatResult chatResult = ollamaAPI.chat(requestModel,streamHandler);
-    }
-}
-```
-You will get a response similar to:
-
-> The
-> The capital
-> The capital of
-> The capital of France
-> The capital of France is 
-> The capital of France is Paris
-> The capital of France is Paris.
-
-
-## Create a new conversation with individual system prompt
-```java
-public class Main {
-
-    public static void main(String[] args) {
-
-        String host = "http://localhost:11434/";
-
-        OllamaAPI ollamaAPI = new OllamaAPI(host);
-        OllamaChatRequestBuilder builder = OllamaChatRequestBuilder.getInstance(OllamaModelType.LLAMA2);
-
-        // create request with system-prompt (overriding the model defaults) and user question
-        OllamaChatRequestModel requestModel = builder.withMessage(OllamaChatMessageRole.SYSTEM, "You are a silent bot that only says 'NI'. Do not say anything else under any circumstances!")
-             .withMessage(OllamaChatMessageRole.USER,"What is the capital of France? And what's France's connection with Mona Lisa?")
-             .build();
-
-        // start conversation with model
-        OllamaChatResult chatResult = ollamaAPI.chat(requestModel);
-
-        System.out.println(chatResult.getResponse());
-    }
-}
-
-```
-You will get a response similar to:
-
-> NI.
-
-## Create a conversation about an image (requires model with image recognition skills)
-
-```java
-public class Main {
-
-    public static void main(String[] args) {
-
-      String host = "http://localhost:11434/";
-
-      OllamaAPI ollamaAPI = new OllamaAPI(host);
-      OllamaChatRequestBuilder builder = OllamaChatRequestBuilder.getInstance(OllamaModelType.LLAVA);
-
-      // Load Image from File and attach to user message (alternatively images could also be added via URL)
-      OllamaChatRequestModel requestModel =
-          builder.withMessage(OllamaChatMessageRole.USER, "What's in the picture?",
-              List.of(getImageFileFromClasspath("dog-on-a-boat.jpg"))).build();
-
-      OllamaChatResult chatResult = ollamaAPI.chat(requestModel);
-      System.out.println("First answer: " + chatResult.getResponse());
-
-      builder.reset();
-
-      // Use history to ask further questions about the image or assistant answer
-      requestModel =
-          builder.withMessages(chatResult.getChatHistory())
-            .withMessage(OllamaChatMessageRole.USER, "What's the dogs breed?").build();
-
-      chatResult = ollamaAPI.chat(requestModel);
-      System.out.println("Second answer: " + chatResult.getResponse());
-    }
-}
-```
-
-You will get a response similar to:
-
-> First Answer: The image shows a dog sitting on the bow of a boat that is docked in calm water. The boat has two levels, with the lower level containing seating and what appears to be an engine cover. The dog seems relaxed and comfortable on the boat, looking out over the water. The background suggests it might be late afternoon or early evening, given the warm lighting and the low position of the sun in the sky.
->
-> Second Answer: Based on the image, it's difficult to definitively determine the breed of the dog. However, the dog appears to be medium-sized with a short coat and a brown coloration, which might suggest that it is a Golden Retriever or a similar breed. Without more details like ear shape and tail length, it's not possible to identify the exact breed confidently.

docs/docs/apis-extras/_category_.json

@@ -1,6 +1,6 @@
 {
   "label": "APIs - Extras",
-  "position": 10,
+  "position": 4,
   "link": {
     "type": "generated-index",
     "description": "Details of APIs to handle bunch of extra stuff."

docs/docs/apis-generate/_category_.json

@@ -1,6 +1,6 @@
 {
-  "label": "APIs - Ask",
-  "position": 10,
+  "label": "APIs - Generate",
+  "position": 3,
   "link": {
     "type": "generated-index",
     "description": "Details of APIs to interact with LLMs."

docs/docs/apis-generate/chat.md

@@ -0,0 +1,205 @@
+---
+sidebar_position: 7
+---
+
+# Chat
+
+This API lets you create a conversation with LLMs. Using this API enables you to ask questions to the model including
+information using the history of already asked questions and the respective answers.
+
+## Create a new conversation and use chat history to augment follow up questions
+
+```java
+public class Main {
+
+    public static void main(String[] args) {
+
+        String host = "http://localhost:11434/";
+
+        OllamaAPI ollamaAPI = new OllamaAPI(host);
+        OllamaChatRequestBuilder builder = OllamaChatRequestBuilder.getInstance(OllamaModelType.LLAMA2);
+
+        // create first user question
+        OllamaChatRequestModel requestModel = builder.withMessage(OllamaChatMessageRole.USER, "What is the capital of France?")
+                .build();
+
+        // start conversation with model
+        OllamaChatResult chatResult = ollamaAPI.chat(requestModel);
+
+        System.out.println("First answer: " + chatResult.getResponse());
+
+        // create next userQuestion
+        requestModel = builder.withMessages(chatResult.getChatHistory()).withMessage(OllamaChatMessageRole.USER, "And what is the second largest city?").build();
+
+        // "continue" conversation with model
+        chatResult = ollamaAPI.chat(requestModel);
+
+        System.out.println("Second answer: " + chatResult.getResponse());
+
+        System.out.println("Chat History: " + chatResult.getChatHistory());
+    }
+}
+
+```
+
+You will get a response similar to:
+
+> First answer: Should be Paris!
+>
+> Second answer: Marseille.
+>
+> Chat History:
+
+```json
+[
+  {
+    "role": "user",
+    "content": "What is the capital of France?",
+    "images": []
+  },
+  {
+    "role": "assistant",
+    "content": "Should be Paris!",
+    "images": []
+  },
+  {
+    "role": "user",
+    "content": "And what is the second largest city?",
+    "images": []
+  },
+  {
+    "role": "assistant",
+    "content": "Marseille.",
+    "images": []
+  }
+]
+```
+
+## Create a conversation where the answer is streamed
+
+```java
+public class Main {
+
+    public static void main(String[] args) {
+
+        String host = "http://localhost:11434/";
+
+        OllamaAPI ollamaAPI = new OllamaAPI(host);
+        OllamaChatRequestBuilder builder = OllamaChatRequestBuilder.getInstance(config.getModel());
+        OllamaChatRequestModel requestModel = builder.withMessage(OllamaChatMessageRole.USER,
+                        "What is the capital of France? And what's France's connection with Mona Lisa?")
+                .build();
+
+        // define a handler (Consumer<String>)
+        OllamaStreamHandler streamHandler = (s) -> {
+            System.out.println(s);
+        };
+
+        OllamaChatResult chatResult = ollamaAPI.chat(requestModel, streamHandler);
+    }
+}
+```
+
+You will get a response similar to:
+
+> The
+> The capital
+> The capital of
+> The capital of France
+> The capital of France is
+> The capital of France is Paris
+> The capital of France is Paris.
+
+## Use a simple Console Output Stream Handler
+
+```java
+import io.github.amithkoujalgi.ollama4j.core.impl.ConsoleOutputStreamHandler;
+
+public class Main {
+    public static void main(String[] args) throws Exception {
+        String host = "http://localhost:11434/";
+        OllamaAPI ollamaAPI = new OllamaAPI(host);
+
+        OllamaChatRequestBuilder builder = OllamaChatRequestBuilder.getInstance(OllamaModelType.LLAMA2);
+        OllamaChatRequestModel requestModel = builder.withMessage(OllamaChatMessageRole.USER, "List all cricket world cup teams of 2019. Name the teams!")
+                .build();
+        OllamaStreamHandler streamHandler = new ConsoleOutputStreamHandler();
+        ollamaAPI.chat(requestModel, streamHandler);
+    }
+}
+```
+
+## Create a new conversation with individual system prompt
+
+```java
+public class Main {
+
+    public static void main(String[] args) {
+
+        String host = "http://localhost:11434/";
+
+        OllamaAPI ollamaAPI = new OllamaAPI(host);
+        OllamaChatRequestBuilder builder = OllamaChatRequestBuilder.getInstance(OllamaModelType.LLAMA2);
+
+        // create request with system-prompt (overriding the model defaults) and user question
+        OllamaChatRequestModel requestModel = builder.withMessage(OllamaChatMessageRole.SYSTEM, "You are a silent bot that only says 'NI'. Do not say anything else under any circumstances!")
+                .withMessage(OllamaChatMessageRole.USER, "What is the capital of France? And what's France's connection with Mona Lisa?")
+                .build();
+
+        // start conversation with model
+        OllamaChatResult chatResult = ollamaAPI.chat(requestModel);
+
+        System.out.println(chatResult.getResponse());
+    }
+}
+
+```
+
+You will get a response similar to:
+
+> NI.
+
+## Create a conversation about an image (requires model with image recognition skills)
+
+```java
+public class Main {
+
+    public static void main(String[] args) {
+
+        String host = "http://localhost:11434/";
+
+        OllamaAPI ollamaAPI = new OllamaAPI(host);
+        OllamaChatRequestBuilder builder = OllamaChatRequestBuilder.getInstance(OllamaModelType.LLAVA);
+
+        // Load Image from File and attach to user message (alternatively images could also be added via URL)
+        OllamaChatRequestModel requestModel =
+                builder.withMessage(OllamaChatMessageRole.USER, "What's in the picture?",
+                        List.of(getImageFileFromClasspath("dog-on-a-boat.jpg"))).build();
+
+        OllamaChatResult chatResult = ollamaAPI.chat(requestModel);
+        System.out.println("First answer: " + chatResult.getResponse());
+
+        builder.reset();
+
+        // Use history to ask further questions about the image or assistant answer
+        requestModel =
+                builder.withMessages(chatResult.getChatHistory())
+                        .withMessage(OllamaChatMessageRole.USER, "What's the dogs breed?").build();
+
+        chatResult = ollamaAPI.chat(requestModel);
+        System.out.println("Second answer: " + chatResult.getResponse());
+    }
+}
+```
+
+You will get a response similar to:
+
+> First Answer: The image shows a dog sitting on the bow of a boat that is docked in calm water. The boat has two
+> levels, with the lower level containing seating and what appears to be an engine cover. The dog seems relaxed and
+> comfortable on the boat, looking out over the water. The background suggests it might be late afternoon or early
+> evening, given the warm lighting and the low position of the sun in the sky.
+>
+> Second Answer: Based on the image, it's difficult to definitively determine the breed of the dog. However, the dog
+> appears to be medium-sized with a short coat and a brown coloration, which might suggest that it is a Golden Retriever
+> or a similar breed. Without more details like ear shape and tail length, it's not possible to identify the exact breed
+> confidently.

docs/docs/apis-generate/generate.md

@@ -41,6 +41,41 @@ You will get a response similar to:
 > require
 > natural language understanding and generation capabilities.
 
+## Try asking a question, receiving the answer streamed
+
+```java
+public class Main {
+
+    public static void main(String[] args) {
+
+        String host = "http://localhost:11434/";
+
+        OllamaAPI ollamaAPI = new OllamaAPI(host);
+        // define a stream handler (Consumer<String>)
+        OllamaStreamHandler streamHandler = (s) -> {
+           System.out.println(s);
+        };
+
+        // Should be called using seperate thread to gain non blocking streaming effect.
+        OllamaResult result = ollamaAPI.generate(config.getModel(),
+          "What is the capital of France? And what's France's connection with Mona Lisa?",
+          new OptionsBuilder().build(), streamHandler);
+        
+        System.out.println("Full response: " +result.getResponse());
+    }
+}
+```
+You will get a response similar to:
+
+> The
+> The capital
+> The capital of
+> The capital of France
+> The capital of France is 
+> The capital of France is Paris
+> The capital of France is Paris.
+> Full response: The capital of France is Paris.
+
 ## Try asking a question from general topics.
 
 ```java

docs/docs/apis-generate/prompt-builder.md

@@ -42,7 +42,7 @@ public class AskPhi {
                         .addSeparator()
                         .add("How do I read a file in Go and print its contents to stdout?");
 
-        OllamaResult response = ollamaAPI.generate(model, promptBuilder.build());
+        OllamaResult response = ollamaAPI.generate(model, promptBuilder.build(), new OptionsBuilder().build());
         System.out.println(response.getResponse());
     }
 }

docs/docs/apis-model-management/_category_.json

@@ -1,6 +1,6 @@
 {
   "label": "APIs - Model Management",
-  "position": 4,
+  "position": 2,
   "link": {
     "type": "generated-index",
     "description": "Details of APIs to manage LLMs."

pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>io.github.amithkoujalgi</groupId>
     <artifactId>ollama4j</artifactId>
-    <version>1.0.53</version>
+    <version>1.0.73-SNAPSHOT</version>
 
     <name>Ollama4j</name>
     <description>Java library for interacting with Ollama API.</description>
@@ -39,7 +39,7 @@
         <connection>scm:git:git@github.com:amithkoujalgi/ollama4j.git</connection>
         <developerConnection>scm:git:https://github.com/amithkoujalgi/ollama4j.git</developerConnection>
         <url>https://github.com/amithkoujalgi/ollama4j</url>
-        <tag>v1.0.53</tag>
+        <tag>v1.0.16</tag>
     </scm>
 
     <build>
@@ -99,7 +99,7 @@
                 <configuration>
                     <skipTests>${skipUnitTests}</skipTests>
                     <includes>
-                        <include>**/unittests/*.java</include>
+                        <include>**/unittests/**/*.java</include>
                     </includes>
                 </configuration>
             </plugin>
@@ -149,7 +149,12 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.15.3</version>
+            <version>2.17.1</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-jsr310</artifactId>
+            <version>2.17.1</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>
@@ -174,6 +179,12 @@
             <version>4.1.0</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.json</groupId>
+            <artifactId>json</artifactId>
+            <version>20240205</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <distributionManagement>

src/main/java/io/github/amithkoujalgi/ollama4j/core/impl/ConsoleOutputStreamHandler.java

@@ -0,0 +1,14 @@
+package io.github.amithkoujalgi.ollama4j.core.impl;
+
+import io.github.amithkoujalgi.ollama4j.core.OllamaStreamHandler;
+
+public class ConsoleOutputStreamHandler implements OllamaStreamHandler {
+    private final StringBuffer response = new StringBuffer();
+
+    @Override
+    public void accept(String message) {
+        String substr = message.substring(response.length());
+        response.append(substr);
+        System.out.print(substr);
+    }
+}

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/Model.java

@@ -1,6 +1,11 @@
 package io.github.amithkoujalgi.ollama4j.core.models;
 
+import java.time.LocalDateTime;
+import java.time.OffsetDateTime;
+
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
 import lombok.Data;
 
 @Data
@@ -9,7 +14,9 @@ public class Model {
   private String name;
   private String model;
   @JsonProperty("modified_at")
-  private String modifiedAt;
+  private OffsetDateTime modifiedAt;
+  @JsonProperty("expires_at")
+  private OffsetDateTime expiresAt;
   private String digest;
   private long size;
   @JsonProperty("details")
@@ -34,4 +41,13 @@ public class Model {
     return name.split(":")[1];
   }
 
+    @Override
+  public String toString() {
+    try {
+      return Utils.getObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(this);
+    } catch (JsonProcessingException e) {
+      throw new RuntimeException(e);
+    }
+  }
+
 }

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/ModelDetail.java

@@ -2,7 +2,8 @@ package io.github.amithkoujalgi.ollama4j.core.models;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
-import java.util.Map;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
 import lombok.Data;
 
 @Data
@@ -16,5 +17,14 @@ public class ModelDetail {
   private String parameters;
   private String template;
   private String system;
-  private Map<String, String> details;
+  private ModelMeta details;
+
+    @Override
+  public String toString() {
+    try {
+      return Utils.getObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(this);
+    } catch (JsonProcessingException e) {
+      throw new RuntimeException(e);
+    }
+  }
 }

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/ModelMeta.java

@@ -2,6 +2,8 @@ package io.github.amithkoujalgi.ollama4j.core.models;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
 import lombok.Data;
 
 @Data
@@ -21,4 +23,13 @@ public class ModelMeta {
 
   @JsonProperty("quantization_level")
   private String quantizationLevel;
+
+    @Override
+  public String toString() {
+    try {
+      return Utils.getObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(this);
+    } catch (JsonProcessingException e) {
+      throw new RuntimeException(e);
+    }
+  }
 }

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/OllamaAsyncResultCallback.java

@@ -1,6 +1,8 @@
 package io.github.amithkoujalgi.ollama4j.core.models;
 
 import io.github.amithkoujalgi.ollama4j.core.exceptions.OllamaBaseException;
+import io.github.amithkoujalgi.ollama4j.core.models.generate.OllamaGenerateRequestModel;
+import io.github.amithkoujalgi.ollama4j.core.models.generate.OllamaGenerateResponseModel;
 import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
 import java.io.BufferedReader;
 import java.io.IOException;
@@ -22,7 +24,7 @@ import lombok.Getter;
 @SuppressWarnings("unused")
 public class OllamaAsyncResultCallback extends Thread {
   private final HttpRequest.Builder requestBuilder;
-  private final OllamaRequestModel ollamaRequestModel;
+  private final OllamaGenerateRequestModel ollamaRequestModel;
   private final Queue<String> queue = new LinkedList<>();
   private String result;
   private boolean isDone;
@@ -47,7 +49,7 @@ public class OllamaAsyncResultCallback extends Thread {
 
   public OllamaAsyncResultCallback(
       HttpRequest.Builder requestBuilder,
-      OllamaRequestModel ollamaRequestModel,
+      OllamaGenerateRequestModel ollamaRequestModel,
       long requestTimeoutSeconds) {
     this.requestBuilder = requestBuilder;
     this.ollamaRequestModel = ollamaRequestModel;
@@ -87,8 +89,8 @@ public class OllamaAsyncResultCallback extends Thread {
             queue.add(ollamaResponseModel.getError());
             responseBuffer.append(ollamaResponseModel.getError());
           } else {
-            OllamaResponseModel ollamaResponseModel =
-                Utils.getObjectMapper().readValue(line, OllamaResponseModel.class);
+            OllamaGenerateResponseModel ollamaResponseModel =
+                Utils.getObjectMapper().readValue(line, OllamaGenerateResponseModel.class);
             queue.add(ollamaResponseModel.getResponse());
             if (!ollamaResponseModel.isDone()) {
               responseBuffer.append(ollamaResponseModel.getResponse());

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/OllamaCommonRequestModel.java

@@ -0,0 +1,35 @@
+package io.github.amithkoujalgi.ollama4j.core.models;
+
+import java.util.Map;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+import io.github.amithkoujalgi.ollama4j.core.utils.BooleanToJsonFormatFlagSerializer;
+import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
+import lombok.Data;
+
+@Data
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public abstract class OllamaCommonRequestModel {
+  
+  protected String model;  
+  @JsonSerialize(using = BooleanToJsonFormatFlagSerializer.class)
+  @JsonProperty(value = "format")
+  protected Boolean returnFormatJson;
+  protected Map<String, Object> options;
+  protected String template;
+  protected boolean stream;
+  @JsonProperty(value = "keep_alive")
+  protected String keepAlive;
+
+  
+  public String toString() {
+    try {
+      return Utils.getObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(this);
+    } catch (JsonProcessingException e) {
+      throw new RuntimeException(e);
+    }
+  }
+}

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/OllamaRequestModel.java

@@ -1,39 +0,0 @@
-package io.github.amithkoujalgi.ollama4j.core.models;
-
-import static io.github.amithkoujalgi.ollama4j.core.utils.Utils.getObjectMapper;
-
-import com.fasterxml.jackson.core.JsonProcessingException;
-
-import io.github.amithkoujalgi.ollama4j.core.utils.OllamaRequestBody;
-
-import java.util.List;
-import java.util.Map;
-import lombok.Data;
-
-@Data
-public class OllamaRequestModel implements OllamaRequestBody{
-
-  private String model;
-  private String prompt;
-  private List<String> images;
-  private Map<String, Object> options;
-
-  public OllamaRequestModel(String model, String prompt) {
-    this.model = model;
-    this.prompt = prompt;
-  }
-
-  public OllamaRequestModel(String model, String prompt, List<String> images) {
-    this.model = model;
-    this.prompt = prompt;
-    this.images = images;
-  }
-
-  public String toString() {
-    try {
-      return getObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(this);
-    } catch (JsonProcessingException e) {
-      throw new RuntimeException(e);
-    }
-  }
-}

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/chat/OllamaChatRequestBuilder.java

@@ -83,12 +83,12 @@ public class OllamaChatRequestBuilder {
     }
 
     public OllamaChatRequestBuilder withOptions(Options options){
-        this.request.setOptions(options);
+        this.request.setOptions(options.getOptionsMap());
         return this;
     }
 
-    public OllamaChatRequestBuilder withFormat(String format){
-        this.request.setFormat(format);
+    public OllamaChatRequestBuilder withGetJsonResponse(){
+        this.request.setReturnFormatJson(true);
         return this;
     }
 

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/chat/OllamaChatRequestModel.java

@@ -1,47 +1,39 @@
 package io.github.amithkoujalgi.ollama4j.core.models.chat;
 
 import java.util.List;
-
-import com.fasterxml.jackson.core.JsonProcessingException;
-
+import io.github.amithkoujalgi.ollama4j.core.models.OllamaCommonRequestModel;
 import io.github.amithkoujalgi.ollama4j.core.utils.OllamaRequestBody;
-import io.github.amithkoujalgi.ollama4j.core.utils.Options;
 
-import static io.github.amithkoujalgi.ollama4j.core.utils.Utils.getObjectMapper;
-
-import lombok.AllArgsConstructor;
-import lombok.Data;
-import lombok.NonNull;
-import lombok.RequiredArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
 
 /**
  * Defines a Request to use against the ollama /api/chat endpoint.
  *
- * @see <a
- *     href="https://github.com/ollama/ollama/blob/main/docs/api.md#generate-a-chat-completion">Generate
- *     Chat Completion</a>
+ * @see <a href=
+ *      "https://github.com/ollama/ollama/blob/main/docs/api.md#generate-a-chat-completion">Generate
+ *      Chat Completion</a>
  */
-@Data
-@AllArgsConstructor
-@RequiredArgsConstructor
-public class OllamaChatRequestModel implements OllamaRequestBody {
+@Getter
+@Setter
+public class OllamaChatRequestModel extends OllamaCommonRequestModel implements OllamaRequestBody {
 
-  @NonNull private String model;
+  private List<OllamaChatMessage> messages;
 
-  @NonNull private List<OllamaChatMessage> messages;
+  public OllamaChatRequestModel() {}
 
-  private String format;
-  private Options options;
-  private String template;
-  private boolean stream;
-  private String keepAlive;
+  public OllamaChatRequestModel(String model, List<OllamaChatMessage> messages) {
+    this.model = model;
+    this.messages = messages;
+  }
 
   @Override
-  public String toString() {
-    try {
-      return getObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(this);
-    } catch (JsonProcessingException e) {
-      throw new RuntimeException(e);
+  public boolean equals(Object o) {
+    if (!(o instanceof OllamaChatRequestModel)) {
+      return false;
     }
+
+    return this.toString().equals(o.toString());
   }
+
 }

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/chat/OllamaChatResponseModel.java

@@ -1,14 +1,15 @@
 package io.github.amithkoujalgi.ollama4j.core.models.chat;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.Data;
 
 import java.util.List;
-import lombok.Data;
 
 @Data
 public class OllamaChatResponseModel {
     private String model;
     private @JsonProperty("created_at") String createdAt;
+    private @JsonProperty("done_reason") String doneReason;
     private OllamaChatMessage message;
     private boolean done;
     private String error;

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/chat/OllamaChatStreamObserver.java

@@ -2,10 +2,8 @@ package io.github.amithkoujalgi.ollama4j.core.models.chat;
 
 import java.util.ArrayList;
 import java.util.List;
-import java.util.stream.Collectors;
 
 import io.github.amithkoujalgi.ollama4j.core.OllamaStreamHandler;
-import lombok.NonNull;
 
 public class OllamaChatStreamObserver {
 
@@ -13,7 +11,7 @@ public class OllamaChatStreamObserver {
 
     private List<OllamaChatResponseModel> responseParts = new ArrayList<>();
 
-    private String message;
+    private String message = "";
 
     public OllamaChatStreamObserver(OllamaStreamHandler streamHandler) {
         this.streamHandler = streamHandler;
@@ -25,8 +23,7 @@ public class OllamaChatStreamObserver {
     }
     
     protected void handleCurrentResponsePart(OllamaChatResponseModel currentResponsePart){
-        List<@NonNull String> allResponsePartsByNow = responseParts.stream().map(r -> r.getMessage().getContent()).collect(Collectors.toList());
-        message = String.join("", allResponsePartsByNow);
+        message = message + currentResponsePart.getMessage().getContent();
         streamHandler.accept(message);
     }
 

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/embeddings/OllamaEmbeddingResponseModel.java

@@ -1,4 +1,4 @@
-package io.github.amithkoujalgi.ollama4j.core.models;
+package io.github.amithkoujalgi.ollama4j.core.models.embeddings;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -7,7 +7,7 @@ import lombok.Data;
 
 @SuppressWarnings("unused")
 @Data
-public class EmbeddingResponse {
+public class OllamaEmbeddingResponseModel {
     @JsonProperty("embedding")
     private List<Double> embedding;
 }

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/embeddings/OllamaEmbeddingsRequestBuilder.java

@@ -0,0 +1,31 @@
+package io.github.amithkoujalgi.ollama4j.core.models.embeddings;
+
+import io.github.amithkoujalgi.ollama4j.core.utils.Options;
+
+public class OllamaEmbeddingsRequestBuilder {
+
+    private OllamaEmbeddingsRequestBuilder(String model, String prompt){
+        request = new OllamaEmbeddingsRequestModel(model, prompt);
+    }
+
+    private OllamaEmbeddingsRequestModel request;
+
+    public static OllamaEmbeddingsRequestBuilder getInstance(String model, String prompt){
+        return new OllamaEmbeddingsRequestBuilder(model, prompt);
+    }
+
+    public OllamaEmbeddingsRequestModel build(){
+        return request;
+    }
+
+    public OllamaEmbeddingsRequestBuilder withOptions(Options options){
+        this.request.setOptions(options.getOptionsMap());
+        return this;
+    }
+
+    public OllamaEmbeddingsRequestBuilder withKeepAlive(String keepAlive){
+        this.request.setKeepAlive(keepAlive);
+        return this;
+    }
+
+}

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/embeddings/OllamaEmbeddingsRequestModel.java

@@ -0,0 +1,33 @@
+package io.github.amithkoujalgi.ollama4j.core.models.embeddings;
+
+import static io.github.amithkoujalgi.ollama4j.core.utils.Utils.getObjectMapper;
+import java.util.Map;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+
+@Data
+@RequiredArgsConstructor
+@NoArgsConstructor
+public class OllamaEmbeddingsRequestModel {
+  @NonNull
+  private String model;
+  @NonNull
+  private String prompt;
+
+  protected Map<String, Object> options;
+  @JsonProperty(value = "keep_alive")
+  private String keepAlive;
+
+  @Override
+  public String toString() {
+    try {
+      return getObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(this);
+    } catch (JsonProcessingException e) {
+      throw new RuntimeException(e);
+    }
+  }
+}

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/generate/OllamaGenerateRequestBuilder.java

@@ -0,0 +1,55 @@
+package io.github.amithkoujalgi.ollama4j.core.models.generate;
+
+import io.github.amithkoujalgi.ollama4j.core.utils.Options;
+
+/**
+ * Helper class for creating {@link io.github.amithkoujalgi.ollama4j.core.models.generate.OllamaGenerateRequestModel} 
+ * objects using the builder-pattern.
+ */
+public class OllamaGenerateRequestBuilder {
+
+    private OllamaGenerateRequestBuilder(String model, String prompt){
+        request = new OllamaGenerateRequestModel(model, prompt);
+    }
+
+    private OllamaGenerateRequestModel request;
+
+    public static OllamaGenerateRequestBuilder getInstance(String model){
+        return new OllamaGenerateRequestBuilder(model,"");
+    }
+
+    public OllamaGenerateRequestModel build(){
+        return request;
+    }
+
+    public OllamaGenerateRequestBuilder withPrompt(String prompt){
+        request.setPrompt(prompt);
+        return this;
+    }
+    
+    public OllamaGenerateRequestBuilder withGetJsonResponse(){
+        this.request.setReturnFormatJson(true);
+        return this;
+    }
+
+    public OllamaGenerateRequestBuilder withOptions(Options options){
+        this.request.setOptions(options.getOptionsMap());
+        return this;
+    }
+
+    public OllamaGenerateRequestBuilder withTemplate(String template){
+        this.request.setTemplate(template);
+        return this;
+    }
+
+    public OllamaGenerateRequestBuilder withStreaming(){
+        this.request.setStream(true);
+        return this;
+    }
+
+    public OllamaGenerateRequestBuilder withKeepAlive(String keepAlive){
+        this.request.setKeepAlive(keepAlive);
+        return this;
+    }
+
+}

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/generate/OllamaGenerateRequestModel.java

@@ -0,0 +1,46 @@
+package io.github.amithkoujalgi.ollama4j.core.models.generate;
+
+
+import io.github.amithkoujalgi.ollama4j.core.models.OllamaCommonRequestModel;
+import io.github.amithkoujalgi.ollama4j.core.utils.OllamaRequestBody;
+
+import java.util.List;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class OllamaGenerateRequestModel extends OllamaCommonRequestModel implements OllamaRequestBody{
+
+  private String prompt;
+  private List<String> images;
+
+  private String system;
+  private String context;
+  private boolean raw;
+
+  public OllamaGenerateRequestModel() {
+  }
+
+  public OllamaGenerateRequestModel(String model, String prompt) {
+    this.model = model;
+    this.prompt = prompt;
+  }
+
+  public OllamaGenerateRequestModel(String model, String prompt, List<String> images) {
+    this.model = model;
+    this.prompt = prompt;
+    this.images = images;
+  }
+
+    @Override
+  public boolean equals(Object o) {
+    if (!(o instanceof OllamaGenerateRequestModel)) {
+      return false;
+    }
+
+    return this.toString().equals(o.toString());
+  }
+
+}

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/generate/OllamaGenerateResponseModel.java

@@ -1,4 +1,4 @@
-package io.github.amithkoujalgi.ollama4j.core.models;
+package io.github.amithkoujalgi.ollama4j.core.models.generate;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
@@ -8,7 +8,7 @@ import lombok.Data;
 
 @Data
 @JsonIgnoreProperties(ignoreUnknown = true)
-public class OllamaResponseModel {
+public class OllamaGenerateResponseModel {
     private String model;
     private @JsonProperty("created_at") String createdAt;
     private String response;

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/generate/OllamaGenerateStreamObserver.java

@@ -0,0 +1,31 @@
+package io.github.amithkoujalgi.ollama4j.core.models.generate;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import io.github.amithkoujalgi.ollama4j.core.OllamaStreamHandler;
+
+public class OllamaGenerateStreamObserver {
+
+    private OllamaStreamHandler streamHandler;
+
+    private List<OllamaGenerateResponseModel> responseParts = new ArrayList<>();
+
+    private String message = "";
+
+    public OllamaGenerateStreamObserver(OllamaStreamHandler streamHandler) {
+        this.streamHandler = streamHandler;
+    }
+
+    public void notify(OllamaGenerateResponseModel currentResponsePart){
+        responseParts.add(currentResponsePart);
+        handleCurrentResponsePart(currentResponsePart);
+    }
+    
+    protected void handleCurrentResponsePart(OllamaGenerateResponseModel currentResponsePart){
+        message = message + currentResponsePart.getResponse();
+        streamHandler.accept(message);
+    }
+
+
+}

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/request/ModelEmbeddingsRequest.java

@@ -1,23 +0,0 @@
-package io.github.amithkoujalgi.ollama4j.core.models.request;
-
-import static io.github.amithkoujalgi.ollama4j.core.utils.Utils.getObjectMapper;
-
-import com.fasterxml.jackson.core.JsonProcessingException;
-import lombok.AllArgsConstructor;
-import lombok.Data;
-
-@Data
-@AllArgsConstructor
-public class ModelEmbeddingsRequest {
-  private String model;
-  private String prompt;
-
-  @Override
-  public String toString() {
-    try {
-      return getObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(this);
-    } catch (JsonProcessingException e) {
-      throw new RuntimeException(e);
-    }
-  }
-}

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/request/OllamaChatEndpointCaller.java

@@ -1,12 +1,6 @@
 package io.github.amithkoujalgi.ollama4j.core.models.request;
 
-import java.io.IOException;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import com.fasterxml.jackson.core.JsonProcessingException;
-
 import io.github.amithkoujalgi.ollama4j.core.OllamaStreamHandler;
 import io.github.amithkoujalgi.ollama4j.core.exceptions.OllamaBaseException;
 import io.github.amithkoujalgi.ollama4j.core.models.BasicAuth;
@@ -15,11 +9,15 @@ import io.github.amithkoujalgi.ollama4j.core.models.chat.OllamaChatResponseModel
 import io.github.amithkoujalgi.ollama4j.core.models.chat.OllamaChatStreamObserver;
 import io.github.amithkoujalgi.ollama4j.core.utils.OllamaRequestBody;
 import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
 
 /**
  * Specialization class for requests
  */
-public class OllamaChatEndpointCaller extends OllamaEndpointCaller{
+public class OllamaChatEndpointCaller extends OllamaEndpointCaller {
 
     private static final Logger LOG = LoggerFactory.getLogger(OllamaChatEndpointCaller.class);
 
@@ -39,12 +37,12 @@ public class OllamaChatEndpointCaller extends OllamaEndpointCaller{
         try {
             OllamaChatResponseModel ollamaResponseModel = Utils.getObjectMapper().readValue(line, OllamaChatResponseModel.class);
             responseBuffer.append(ollamaResponseModel.getMessage().getContent());
-            if(streamObserver != null) {
+            if (streamObserver != null) {
                 streamObserver.notify(ollamaResponseModel);
             }
             return ollamaResponseModel.isDone();
         } catch (JsonProcessingException e) {
-            LOG.error("Error parsing the Ollama chat response!",e);
+            LOG.error("Error parsing the Ollama chat response!", e);
             return true;
         }
     }
@@ -54,7 +52,4 @@ public class OllamaChatEndpointCaller extends OllamaEndpointCaller{
         streamObserver = new OllamaChatStreamObserver(streamHandler);
         return super.callSync(body);
     }
-
-    
- 
 }

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/request/OllamaEndpointCaller.java

@@ -1,5 +1,15 @@
 package io.github.amithkoujalgi.ollama4j.core.models.request;
 
+import io.github.amithkoujalgi.ollama4j.core.OllamaAPI;
+import io.github.amithkoujalgi.ollama4j.core.exceptions.OllamaBaseException;
+import io.github.amithkoujalgi.ollama4j.core.models.BasicAuth;
+import io.github.amithkoujalgi.ollama4j.core.models.OllamaErrorResponseModel;
+import io.github.amithkoujalgi.ollama4j.core.models.OllamaResult;
+import io.github.amithkoujalgi.ollama4j.core.utils.OllamaRequestBody;
+import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
@@ -12,17 +22,6 @@ import java.nio.charset.StandardCharsets;
 import java.time.Duration;
 import java.util.Base64;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import io.github.amithkoujalgi.ollama4j.core.OllamaAPI;
-import io.github.amithkoujalgi.ollama4j.core.exceptions.OllamaBaseException;
-import io.github.amithkoujalgi.ollama4j.core.models.BasicAuth;
-import io.github.amithkoujalgi.ollama4j.core.models.OllamaErrorResponseModel;
-import io.github.amithkoujalgi.ollama4j.core.models.OllamaResult;
-import io.github.amithkoujalgi.ollama4j.core.utils.OllamaRequestBody;
-import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
-
 /**
  * Abstract helperclass to call the ollama api server.
  */
@@ -52,104 +51,102 @@ public abstract class OllamaEndpointCaller {
      *
      * @param body POST body payload
      * @return result answer given by the assistant
-     * @throws OllamaBaseException any response code than 200 has been returned
-     * @throws IOException in case the responseStream can not be read
+     * @throws OllamaBaseException  any response code than 200 has been returned
+     * @throws IOException          in case the responseStream can not be read
      * @throws InterruptedException in case the server is not reachable or network issues happen
      */
-    public OllamaResult callSync(OllamaRequestBody body)  throws OllamaBaseException, IOException, InterruptedException{
-
+    public OllamaResult callSync(OllamaRequestBody body) throws OllamaBaseException, IOException, InterruptedException {
         // Create Request
-    long startTime = System.currentTimeMillis();
-    HttpClient httpClient = HttpClient.newHttpClient();
-    URI uri = URI.create(this.host + getEndpointSuffix());
-    HttpRequest.Builder requestBuilder =
-        getRequestBuilderDefault(uri)
-            .POST(
-                body.getBodyPublisher());
-    HttpRequest request = requestBuilder.build();
-    if (this.verbose) LOG.info("Asking model: " + body.toString());
-    HttpResponse<InputStream> response =
-        httpClient.send(request, HttpResponse.BodyHandlers.ofInputStream());
-    
+        long startTime = System.currentTimeMillis();
+        HttpClient httpClient = HttpClient.newHttpClient();
+        URI uri = URI.create(this.host + getEndpointSuffix());
+        HttpRequest.Builder requestBuilder =
+                getRequestBuilderDefault(uri)
+                        .POST(
+                                body.getBodyPublisher());
+        HttpRequest request = requestBuilder.build();
+        if (this.verbose) LOG.info("Asking model: " + body.toString());
+        HttpResponse<InputStream> response =
+                httpClient.send(request, HttpResponse.BodyHandlers.ofInputStream());
 
         int statusCode = response.statusCode();
-    InputStream responseBodyStream = response.body();
-    StringBuilder responseBuffer = new StringBuilder();
-    try (BufferedReader reader =
-        new BufferedReader(new InputStreamReader(responseBodyStream, StandardCharsets.UTF_8))) {
-      String line;
-      while ((line = reader.readLine()) != null) {
-        if (statusCode == 404) {
-            LOG.warn("Status code: 404 (Not Found)");
-          OllamaErrorResponseModel ollamaResponseModel =
-              Utils.getObjectMapper().readValue(line, OllamaErrorResponseModel.class);
-          responseBuffer.append(ollamaResponseModel.getError());
-        } else if (statusCode == 401) {
-            LOG.warn("Status code: 401 (Unauthorized)");
-          OllamaErrorResponseModel ollamaResponseModel =
-              Utils.getObjectMapper()
-                  .readValue("{\"error\":\"Unauthorized\"}", OllamaErrorResponseModel.class);
-          responseBuffer.append(ollamaResponseModel.getError());
-        } else if (statusCode == 400) {
-          LOG.warn("Status code: 400 (Bad Request)");
-          OllamaErrorResponseModel ollamaResponseModel = Utils.getObjectMapper().readValue(line,
-              OllamaErrorResponseModel.class);
-          responseBuffer.append(ollamaResponseModel.getError());
-        } else {
-          boolean finished = parseResponseAndAddToBuffer(line,responseBuffer);
-            if (finished) {
-              break;
+        InputStream responseBodyStream = response.body();
+        StringBuilder responseBuffer = new StringBuilder();
+        try (BufferedReader reader =
+                     new BufferedReader(new InputStreamReader(responseBodyStream, StandardCharsets.UTF_8))) {
+            String line;
+            while ((line = reader.readLine()) != null) {
+                if (statusCode == 404) {
+                    LOG.warn("Status code: 404 (Not Found)");
+                    OllamaErrorResponseModel ollamaResponseModel =
+                            Utils.getObjectMapper().readValue(line, OllamaErrorResponseModel.class);
+                    responseBuffer.append(ollamaResponseModel.getError());
+                } else if (statusCode == 401) {
+                    LOG.warn("Status code: 401 (Unauthorized)");
+                    OllamaErrorResponseModel ollamaResponseModel =
+                            Utils.getObjectMapper()
+                                    .readValue("{\"error\":\"Unauthorized\"}", OllamaErrorResponseModel.class);
+                    responseBuffer.append(ollamaResponseModel.getError());
+                } else if (statusCode == 400) {
+                    LOG.warn("Status code: 400 (Bad Request)");
+                    OllamaErrorResponseModel ollamaResponseModel = Utils.getObjectMapper().readValue(line,
+                            OllamaErrorResponseModel.class);
+                    responseBuffer.append(ollamaResponseModel.getError());
+                } else {
+                    boolean finished = parseResponseAndAddToBuffer(line, responseBuffer);
+                    if (finished) {
+                        break;
+                    }
+                }
             }
         }
-      }
-    }
 
-    if (statusCode != 200) {
-        LOG.error("Status code " + statusCode);
-      throw new OllamaBaseException(responseBuffer.toString());
-    } else {
-      long endTime = System.currentTimeMillis();
-      OllamaResult ollamaResult =
-          new OllamaResult(responseBuffer.toString().trim(), endTime - startTime, statusCode);
-      if (verbose) LOG.info("Model response: " + ollamaResult);
-      return ollamaResult;
+        if (statusCode != 200) {
+            LOG.error("Status code " + statusCode);
+            throw new OllamaBaseException(responseBuffer.toString());
+        } else {
+            long endTime = System.currentTimeMillis();
+            OllamaResult ollamaResult =
+                    new OllamaResult(responseBuffer.toString().trim(), endTime - startTime, statusCode);
+            if (verbose) LOG.info("Model response: " + ollamaResult);
+            return ollamaResult;
+        }
     }
-  }
 
     /**
-   * Get default request builder.
-   *
-   * @param uri URI to get a HttpRequest.Builder
-   * @return HttpRequest.Builder
-   */
-  private HttpRequest.Builder getRequestBuilderDefault(URI uri) {
-    HttpRequest.Builder requestBuilder =
-        HttpRequest.newBuilder(uri)
-            .header("Content-Type", "application/json")
-            .timeout(Duration.ofSeconds(this.requestTimeoutSeconds));
-    if (isBasicAuthCredentialsSet()) {
-      requestBuilder.header("Authorization", getBasicAuthHeaderValue());
+     * Get default request builder.
+     *
+     * @param uri URI to get a HttpRequest.Builder
+     * @return HttpRequest.Builder
+     */
+    private HttpRequest.Builder getRequestBuilderDefault(URI uri) {
+        HttpRequest.Builder requestBuilder =
+                HttpRequest.newBuilder(uri)
+                        .header("Content-Type", "application/json")
+                        .timeout(Duration.ofSeconds(this.requestTimeoutSeconds));
+        if (isBasicAuthCredentialsSet()) {
+            requestBuilder.header("Authorization", getBasicAuthHeaderValue());
+        }
+        return requestBuilder;
     }
-    return requestBuilder;
-  }
 
-  /**
-   * Get basic authentication header value.
-   *
-   * @return basic authentication header value (encoded credentials)
-   */
-  private String getBasicAuthHeaderValue() {
-    String credentialsToEncode = this.basicAuth.getUsername() + ":" + this.basicAuth.getPassword();
-    return "Basic " + Base64.getEncoder().encodeToString(credentialsToEncode.getBytes());
-  }
+    /**
+     * Get basic authentication header value.
+     *
+     * @return basic authentication header value (encoded credentials)
+     */
+    private String getBasicAuthHeaderValue() {
+        String credentialsToEncode = this.basicAuth.getUsername() + ":" + this.basicAuth.getPassword();
+        return "Basic " + Base64.getEncoder().encodeToString(credentialsToEncode.getBytes());
+    }
 
-  /**
-   * Check if Basic Auth credentials set.
-   *
-   * @return true when Basic Auth credentials set
-   */
-  private boolean isBasicAuthCredentialsSet() {
-    return this.basicAuth != null;
-  }
+    /**
+     * Check if Basic Auth credentials set.
+     *
+     * @return true when Basic Auth credentials set
+     */
+    private boolean isBasicAuthCredentialsSet() {
+        return this.basicAuth != null;
+    }
 
 }

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/request/OllamaGenerateEndpointCaller.java

@@ -1,18 +1,25 @@
 package io.github.amithkoujalgi.ollama4j.core.models.request;
 
+import java.io.IOException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-
+import io.github.amithkoujalgi.ollama4j.core.OllamaStreamHandler;
+import io.github.amithkoujalgi.ollama4j.core.exceptions.OllamaBaseException;
 import io.github.amithkoujalgi.ollama4j.core.models.BasicAuth;
-import io.github.amithkoujalgi.ollama4j.core.models.OllamaResponseModel;
+import io.github.amithkoujalgi.ollama4j.core.models.OllamaResult;
+import io.github.amithkoujalgi.ollama4j.core.models.generate.OllamaGenerateResponseModel;
+import io.github.amithkoujalgi.ollama4j.core.models.generate.OllamaGenerateStreamObserver;
+import io.github.amithkoujalgi.ollama4j.core.utils.OllamaRequestBody;
 import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
 
 public class OllamaGenerateEndpointCaller extends OllamaEndpointCaller{
 
     private static final Logger LOG = LoggerFactory.getLogger(OllamaGenerateEndpointCaller.class);
 
+    private OllamaGenerateStreamObserver streamObserver;
+
     public OllamaGenerateEndpointCaller(String host, BasicAuth basicAuth, long requestTimeoutSeconds, boolean verbose) {
         super(host, basicAuth, requestTimeoutSeconds, verbose);   
     }
@@ -25,8 +32,11 @@ public class OllamaGenerateEndpointCaller extends OllamaEndpointCaller{
     @Override
     protected boolean parseResponseAndAddToBuffer(String line, StringBuilder responseBuffer) {
                 try {
-                    OllamaResponseModel ollamaResponseModel = Utils.getObjectMapper().readValue(line, OllamaResponseModel.class);
+                    OllamaGenerateResponseModel ollamaResponseModel = Utils.getObjectMapper().readValue(line, OllamaGenerateResponseModel.class);
                     responseBuffer.append(ollamaResponseModel.getResponse());
+                    if(streamObserver != null) {
+                        streamObserver.notify(ollamaResponseModel);
+                    }
                     return ollamaResponseModel.isDone();
                 } catch (JsonProcessingException e) {
                     LOG.error("Error parsing the Ollama chat response!",e);
@@ -34,7 +44,11 @@ public class OllamaGenerateEndpointCaller extends OllamaEndpointCaller{
                 }         
     }
 
-    
+    public OllamaResult call(OllamaRequestBody body, OllamaStreamHandler streamHandler)
+        throws OllamaBaseException, IOException, InterruptedException {
+    streamObserver = new OllamaGenerateStreamObserver(streamHandler);
+    return super.callSync(body);
+    }
     
     
 }

src/main/java/io/github/amithkoujalgi/ollama4j/core/types/OllamaModelType.java

@@ -8,57 +8,75 @@ package io.github.amithkoujalgi.ollama4j.core.types;
  */
 @SuppressWarnings("ALL")
 public class OllamaModelType {
-  public static final String LLAMA2 = "llama2";
-  public static final String MISTRAL = "mistral";
-  public static final String LLAVA = "llava";
-  public static final String MIXTRAL = "mixtral";
-  public static final String STARLING_LM = "starling-lm";
-  public static final String NEURAL_CHAT = "neural-chat";
-  public static final String CODELLAMA = "codellama";
-  public static final String LLAMA2_UNCENSORED = "llama2-uncensored";
-  public static final String DOLPHIN_MIXTRAL = "dolphin-mixtral";
-  public static final String ORCA_MINI = "orca-mini";
-  public static final String VICUNA = "vicuna";
-  public static final String WIZARD_VICUNA_UNCENSORED = "wizard-vicuna-uncensored";
-  public static final String PHIND_CODELLAMA = "phind-codellama";
-  public static final String PHI = "phi";
-  public static final String ZEPHYR = "zephyr";
-  public static final String WIZARDCODER = "wizardcoder";
-  public static final String MISTRAL_OPENORCA = "mistral-openorca";
-  public static final String NOUS_HERMES = "nous-hermes";
-  public static final String DEEPSEEK_CODER = "deepseek-coder";
-  public static final String WIZARD_MATH = "wizard-math";
-  public static final String LLAMA2_CHINESE = "llama2-chinese";
-  public static final String FALCON = "falcon";
-  public static final String ORCA2 = "orca2";
-  public static final String STABLE_BELUGA = "stable-beluga";
-  public static final String CODEUP = "codeup";
-  public static final String EVERYTHINGLM = "everythinglm";
-  public static final String MEDLLAMA2 = "medllama2";
-  public static final String WIZARDLM_UNCENSORED = "wizardlm-uncensored";
-  public static final String STARCODER = "starcoder";
-  public static final String DOLPHIN22_MISTRAL = "dolphin2.2-mistral";
-  public static final String OPENCHAT = "openchat";
-  public static final String WIZARD_VICUNA = "wizard-vicuna";
-  public static final String OPENHERMES25_MISTRAL = "openhermes2.5-mistral";
-  public static final String OPEN_ORCA_PLATYPUS2 = "open-orca-platypus2";
-  public static final String YI = "yi";
-  public static final String YARN_MISTRAL = "yarn-mistral";
-  public static final String SAMANTHA_MISTRAL = "samantha-mistral";
-  public static final String SQLCODER = "sqlcoder";
-  public static final String YARN_LLAMA2 = "yarn-llama2";
-  public static final String MEDITRON = "meditron";
-  public static final String STABLELM_ZEPHYR = "stablelm-zephyr";
-  public static final String OPENHERMES2_MISTRAL = "openhermes2-mistral";
-  public static final String DEEPSEEK_LLM = "deepseek-llm";
-  public static final String MISTRALLITE = "mistrallite";
-  public static final String DOLPHIN21_MISTRAL = "dolphin2.1-mistral";
-  public static final String WIZARDLM = "wizardlm";
-  public static final String CODEBOOGA = "codebooga";
-  public static final String MAGICODER = "magicoder";
-  public static final String GOLIATH = "goliath";
-  public static final String NEXUSRAVEN = "nexusraven";
-  public static final String ALFRED = "alfred";
-  public static final String XWINLM = "xwinlm";
-  public static final String BAKLLAVA = "bakllava";
+    public static final String GEMMA = "gemma";
+    public static final String LLAMA2 = "llama2";
+    public static final String LLAMA3 = "llama3";
+    public static final String MISTRAL = "mistral";
+    public static final String MIXTRAL = "mixtral";
+    public static final String LLAVA = "llava";
+    public static final String LLAVA_PHI3 = "llava-phi3";
+    public static final String NEURAL_CHAT = "neural-chat";
+    public static final String CODELLAMA = "codellama";
+    public static final String DOLPHIN_MIXTRAL = "dolphin-mixtral";
+    public static final String MISTRAL_OPENORCA = "mistral-openorca";
+    public static final String LLAMA2_UNCENSORED = "llama2-uncensored";
+    public static final String PHI = "phi";
+    public static final String PHI3 = "phi3";
+    public static final String ORCA_MINI = "orca-mini";
+    public static final String DEEPSEEK_CODER = "deepseek-coder";
+    public static final String DOLPHIN_MISTRAL = "dolphin-mistral";
+    public static final String VICUNA = "vicuna";
+    public static final String WIZARD_VICUNA_UNCENSORED = "wizard-vicuna-uncensored";
+    public static final String ZEPHYR = "zephyr";
+    public static final String OPENHERMES = "openhermes";
+    public static final String QWEN = "qwen";
+    public static final String WIZARDCODER = "wizardcoder";
+    public static final String LLAMA2_CHINESE = "llama2-chinese";
+    public static final String TINYLLAMA = "tinyllama";
+    public static final String PHIND_CODELLAMA = "phind-codellama";
+    public static final String OPENCHAT = "openchat";
+    public static final String ORCA2 = "orca2";
+    public static final String FALCON = "falcon";
+    public static final String WIZARD_MATH = "wizard-math";
+    public static final String TINYDOLPHIN = "tinydolphin";
+    public static final String NOUS_HERMES = "nous-hermes";
+    public static final String YI = "yi";
+    public static final String DOLPHIN_PHI = "dolphin-phi";
+    public static final String STARLING_LM = "starling-lm";
+    public static final String STARCODER = "starcoder";
+    public static final String CODEUP = "codeup";
+    public static final String MEDLLAMA2 = "medllama2";
+    public static final String STABLE_CODE = "stable-code";
+    public static final String WIZARDLM_UNCENSORED = "wizardlm-uncensored";
+    public static final String BAKLLAVA = "bakllava";
+    public static final String EVERYTHINGLM = "everythinglm";
+    public static final String SOLAR = "solar";
+    public static final String STABLE_BELUGA = "stable-beluga";
+    public static final String SQLCODER = "sqlcoder";
+    public static final String YARN_MISTRAL = "yarn-mistral";
+    public static final String NOUS_HERMES2_MIXTRAL = "nous-hermes2-mixtral";
+    public static final String SAMANTHA_MISTRAL = "samantha-mistral";
+    public static final String STABLELM_ZEPHYR = "stablelm-zephyr";
+    public static final String MEDITRON = "meditron";
+    public static final String WIZARD_VICUNA = "wizard-vicuna";
+    public static final String STABLELM2 = "stablelm2";
+    public static final String MAGICODER = "magicoder";
+    public static final String YARN_LLAMA2 = "yarn-llama2";
+    public static final String NOUS_HERMES2 = "nous-hermes2";
+    public static final String DEEPSEEK_LLM = "deepseek-llm";
+    public static final String LLAMA_PRO = "llama-pro";
+    public static final String OPEN_ORCA_PLATYPUS2 = "open-orca-platypus2";
+    public static final String CODEBOOGA = "codebooga";
+    public static final String MISTRALLITE = "mistrallite";
+    public static final String NEXUSRAVEN = "nexusraven";
+    public static final String GOLIATH = "goliath";
+    public static final String NOMIC_EMBED_TEXT = "nomic-embed-text";
+    public static final String NOTUX = "notux";
+    public static final String ALFRED = "alfred";
+    public static final String MEGADOLPHIN = "megadolphin";
+    public static final String WIZARDLM = "wizardlm";
+    public static final String XWINLM = "xwinlm";
+    public static final String NOTUS = "notus";
+    public static final String DUCKDB_NSQL = "duckdb-nsql";
+    public static final String ALL_MINILM = "all-minilm";
 }

src/main/java/io/github/amithkoujalgi/ollama4j/core/utils/BooleanToJsonFormatFlagSerializer.java

@@ -0,0 +1,21 @@
+package io.github.amithkoujalgi.ollama4j.core.utils;
+
+import java.io.IOException;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.SerializerProvider;
+
+public class BooleanToJsonFormatFlagSerializer extends JsonSerializer<Boolean>{
+
+    @Override
+    public void serialize(Boolean value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
+            gen.writeString("json");
+    }
+
+    @Override
+    public boolean isEmpty(SerializerProvider provider,Boolean value){
+        return !value;
+    }
+
+}

src/main/java/io/github/amithkoujalgi/ollama4j/core/utils/FileToBase64Serializer.java

@@ -1,8 +1,6 @@
 package io.github.amithkoujalgi.ollama4j.core.utils;
 
-import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.io.ObjectOutputStream;
 import java.util.Base64;
 import java.util.Collection;
 
@@ -20,11 +18,4 @@ public class FileToBase64Serializer extends JsonSerializer<Collection<byte[]>> {
         }
         jsonGenerator.writeEndArray();
     }
-
-    public static byte[] serialize(Object obj) throws IOException {
-        ByteArrayOutputStream out = new ByteArrayOutputStream();
-        ObjectOutputStream os = new ObjectOutputStream(out);
-        os.writeObject(obj);
-        return out.toByteArray();
-    }
 }

src/main/java/io/github/amithkoujalgi/ollama4j/core/utils/Utils.java

@@ -8,10 +8,18 @@ import java.net.URISyntaxException;
 import java.net.URL;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 
 public class Utils {
+
+  private static ObjectMapper objectMapper;
+
   public static ObjectMapper getObjectMapper() {
-    return new ObjectMapper();
+    if(objectMapper == null) {
+      objectMapper = new ObjectMapper();
+      objectMapper.registerModule(new JavaTimeModule());
+    }
+    return objectMapper;
   }
 
   public static byte[] loadImageBytesFromUrl(String imageUrl)

src/test/java/io/github/amithkoujalgi/ollama4j/integrationtests/TestRealAPIs.java

@@ -4,11 +4,14 @@ import static org.junit.jupiter.api.Assertions.*;
 
 import io.github.amithkoujalgi.ollama4j.core.OllamaAPI;
 import io.github.amithkoujalgi.ollama4j.core.exceptions.OllamaBaseException;
+import io.github.amithkoujalgi.ollama4j.core.models.ModelDetail;
 import io.github.amithkoujalgi.ollama4j.core.models.OllamaResult;
 import io.github.amithkoujalgi.ollama4j.core.models.chat.OllamaChatMessageRole;
 import io.github.amithkoujalgi.ollama4j.core.models.chat.OllamaChatRequestBuilder;
 import io.github.amithkoujalgi.ollama4j.core.models.chat.OllamaChatRequestModel;
 import io.github.amithkoujalgi.ollama4j.core.models.chat.OllamaChatResult;
+import io.github.amithkoujalgi.ollama4j.core.models.embeddings.OllamaEmbeddingsRequestModel;
+import io.github.amithkoujalgi.ollama4j.core.models.embeddings.OllamaEmbeddingsRequestBuilder;
 import io.github.amithkoujalgi.ollama4j.core.utils.OptionsBuilder;
 import java.io.File;
 import java.io.IOException;
@@ -60,7 +63,7 @@ class TestRealAPIs {
     } catch (HttpConnectTimeoutException e) {
       fail(e.getMessage());
     } catch (Exception e) {
-      throw new RuntimeException(e);
+      fail(e);
     }
   }
 
@@ -72,7 +75,7 @@ class TestRealAPIs {
       assertNotNull(ollamaAPI.listModels());
       ollamaAPI.listModels().forEach(System.out::println);
     } catch (IOException | OllamaBaseException | InterruptedException | URISyntaxException e) {
-      throw new RuntimeException(e);
+      fail(e);
     }
   }
 
@@ -87,7 +90,20 @@ class TestRealAPIs {
               .anyMatch(model -> model.getModel().equalsIgnoreCase(config.getModel()));
       assertTrue(found);
     } catch (IOException | OllamaBaseException | InterruptedException | URISyntaxException e) {
-      throw new RuntimeException(e);
+      fail(e);
+    }
+  }
+
+  @Test
+  @Order(3)
+  void testListDtails() {
+    testEndpointReachability();
+    try {
+      ModelDetail modelDetails = ollamaAPI.getModelDetails(config.getModel());
+      assertNotNull(modelDetails);
+      System.out.println(modelDetails);
+    } catch (IOException | OllamaBaseException | InterruptedException | URISyntaxException e) {
+      fail(e);
     }
   }
 
@@ -105,7 +121,33 @@ class TestRealAPIs {
       assertNotNull(result.getResponse());
       assertFalse(result.getResponse().isEmpty());
     } catch (IOException | OllamaBaseException | InterruptedException e) {
-      throw new RuntimeException(e);
+      fail(e);
+    }
+  }
+
+  @Test
+  @Order(3)
+  void testAskModelWithDefaultOptionsStreamed() {
+    testEndpointReachability();
+    try {
+
+      StringBuffer sb = new StringBuffer("");
+
+      OllamaResult result = ollamaAPI.generate(config.getModel(),
+          "What is the capital of France? And what's France's connection with Mona Lisa?",
+          new OptionsBuilder().build(), (s) -> {
+            LOG.info(s);
+            String substring = s.substring(sb.toString().length(), s.length());
+            LOG.info(substring);
+            sb.append(substring);
+          });
+
+      assertNotNull(result);
+      assertNotNull(result.getResponse());
+      assertFalse(result.getResponse().isEmpty());
+      assertEquals(sb.toString().trim(), result.getResponse().trim());
+    } catch (IOException | OllamaBaseException | InterruptedException e) {
+      fail(e);
     }
   }
 
@@ -123,7 +165,7 @@ class TestRealAPIs {
       assertNotNull(result.getResponse());
       assertFalse(result.getResponse().isEmpty());
     } catch (IOException | OllamaBaseException | InterruptedException e) {
-      throw new RuntimeException(e);
+      fail(e);
     }
   }
 
@@ -143,7 +185,7 @@ class TestRealAPIs {
       assertFalse(chatResult.getResponse().isBlank());
       assertEquals(4,chatResult.getChatHistory().size());
     } catch (IOException | OllamaBaseException | InterruptedException e) {
-      throw new RuntimeException(e);
+      fail(e);
     }
   }
 
@@ -165,7 +207,7 @@ class TestRealAPIs {
       assertTrue(chatResult.getResponse().startsWith("NI"));
       assertEquals(3, chatResult.getChatHistory().size());
     } catch (IOException | OllamaBaseException | InterruptedException e) {
-      throw new RuntimeException(e);
+      fail(e);
     }
   }
 
@@ -183,14 +225,14 @@ class TestRealAPIs {
 
       OllamaChatResult chatResult = ollamaAPI.chat(requestModel,(s) -> {
         LOG.info(s);
-        String substring = s.substring(sb.toString().length(), s.length()-1);
+        String substring = s.substring(sb.toString().length(), s.length());
         LOG.info(substring);
         sb.append(substring);
       });
       assertNotNull(chatResult);
       assertEquals(sb.toString().trim(), chatResult.getResponse().trim());
     } catch (IOException | OllamaBaseException | InterruptedException e) {
-      throw new RuntimeException(e);
+      fail(e);
     }
   }
 
@@ -221,7 +263,7 @@ class TestRealAPIs {
 
 
     } catch (IOException | OllamaBaseException | InterruptedException e) {
-      throw new RuntimeException(e);
+      fail(e);
     }
   }
 
@@ -238,7 +280,7 @@ class TestRealAPIs {
       OllamaChatResult chatResult = ollamaAPI.chat(requestModel);
       assertNotNull(chatResult);
     } catch (IOException | OllamaBaseException | InterruptedException e) {
-      throw new RuntimeException(e);
+      fail(e);
     }
   }
 
@@ -258,7 +300,31 @@ class TestRealAPIs {
       assertNotNull(result.getResponse());
       assertFalse(result.getResponse().isEmpty());
     } catch (IOException | OllamaBaseException | InterruptedException e) {
-      throw new RuntimeException(e);
+      fail(e);
+    }
+  }
+
+  @Test
+  @Order(3)
+  void testAskModelWithOptionsAndImageFilesStreamed() {
+    testEndpointReachability();
+    File imageFile = getImageFileFromClasspath("dog-on-a-boat.jpg");
+    try {
+      StringBuffer sb = new StringBuffer("");
+
+      OllamaResult result = ollamaAPI.generateWithImageFiles(config.getImageModel(),
+          "What is in this image?", List.of(imageFile), new OptionsBuilder().build(), (s) -> {
+            LOG.info(s);
+            String substring = s.substring(sb.toString().length(), s.length());
+            LOG.info(substring);
+            sb.append(substring);
+          });
+      assertNotNull(result);
+      assertNotNull(result.getResponse());
+      assertFalse(result.getResponse().isEmpty());
+      assertEquals(sb.toString().trim(), result.getResponse().trim());
+    } catch (IOException | OllamaBaseException | InterruptedException e) {
+      fail(e);
     }
   }
 
@@ -278,7 +344,24 @@ class TestRealAPIs {
       assertNotNull(result.getResponse());
       assertFalse(result.getResponse().isEmpty());
     } catch (IOException | OllamaBaseException | InterruptedException | URISyntaxException e) {
-      throw new RuntimeException(e);
+      fail(e);
+    }
+  }
+
+  @Test
+  @Order(3)
+  public void testEmbedding() {
+    testEndpointReachability();
+    try {
+      OllamaEmbeddingsRequestModel request = OllamaEmbeddingsRequestBuilder
+          .getInstance(config.getModel(), "What is the capital of France?").build();
+
+      List<Double> embeddings = ollamaAPI.generateEmbeddings(request);
+
+      assertNotNull(embeddings);
+      assertFalse(embeddings.isEmpty());
+    } catch (IOException | OllamaBaseException | InterruptedException e) {
+      fail(e);
     }
   }
 }

src/test/java/io/github/amithkoujalgi/ollama4j/unittests/jackson/AbstractSerializationTest.java

@@ -0,0 +1,35 @@
+package io.github.amithkoujalgi.ollama4j.unittests.jackson;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.fail;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
+
+public abstract class AbstractSerializationTest<T> {
+
+    protected ObjectMapper mapper = Utils.getObjectMapper();
+
+    protected String serialize(T obj) {
+        try {
+            return mapper.writeValueAsString(obj);
+        } catch (JsonProcessingException e) {
+            fail("Could not serialize request!", e);
+            return null;
+        }
+    }
+
+    protected T deserialize(String jsonObject, Class<T> deserializationClass) {
+        try {
+            return mapper.readValue(jsonObject, deserializationClass);
+        } catch (JsonProcessingException e) {
+            fail("Could not deserialize jsonObject!", e);
+            return null;
+        }
+    }
+
+    protected void assertEqualsAfterUnmarshalling(T unmarshalledObject,
+        T req) {
+        assertEquals(req, unmarshalledObject);
+    }
+}

src/test/java/io/github/amithkoujalgi/ollama4j/unittests/jackson/TestChatRequestSerialization.java

@@ -0,0 +1,113 @@
+package io.github.amithkoujalgi.ollama4j.unittests.jackson;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.io.File;
+import java.util.List;
+
+import org.json.JSONObject;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import io.github.amithkoujalgi.ollama4j.core.models.chat.OllamaChatMessageRole;
+import io.github.amithkoujalgi.ollama4j.core.models.chat.OllamaChatRequestBuilder;
+import io.github.amithkoujalgi.ollama4j.core.models.chat.OllamaChatRequestModel;
+import io.github.amithkoujalgi.ollama4j.core.utils.OptionsBuilder;
+
+public class TestChatRequestSerialization extends AbstractSerializationTest<OllamaChatRequestModel> {
+
+    private OllamaChatRequestBuilder builder;
+
+    @BeforeEach
+    public void init() {
+        builder = OllamaChatRequestBuilder.getInstance("DummyModel");
+    }
+
+    @Test
+    public void testRequestOnlyMandatoryFields() {
+        OllamaChatRequestModel req = builder.withMessage(OllamaChatMessageRole.USER, "Some prompt").build();
+        String jsonRequest = serialize(req);
+        assertEqualsAfterUnmarshalling(deserialize(jsonRequest,OllamaChatRequestModel.class), req);
+    }
+
+    @Test
+    public void testRequestMultipleMessages() {
+        OllamaChatRequestModel req = builder.withMessage(OllamaChatMessageRole.SYSTEM, "System prompt")
+        .withMessage(OllamaChatMessageRole.USER, "Some prompt")
+        .build();
+        String jsonRequest = serialize(req);
+        assertEqualsAfterUnmarshalling(deserialize(jsonRequest,OllamaChatRequestModel.class), req);
+    }
+
+    @Test
+    public void testRequestWithMessageAndImage() {
+        OllamaChatRequestModel req = builder.withMessage(OllamaChatMessageRole.USER, "Some prompt",
+                List.of(new File("src/test/resources/dog-on-a-boat.jpg"))).build();
+        String jsonRequest = serialize(req);
+        assertEqualsAfterUnmarshalling(deserialize(jsonRequest,OllamaChatRequestModel.class), req);
+    }
+
+    @Test
+    public void testRequestWithOptions() {
+        OptionsBuilder b = new OptionsBuilder();
+        OllamaChatRequestModel req = builder.withMessage(OllamaChatMessageRole.USER, "Some prompt")
+            .withOptions(b.setMirostat(1).build())
+            .withOptions(b.setTemperature(1L).build())
+            .withOptions(b.setMirostatEta(1L).build())
+            .withOptions(b.setMirostatTau(1L).build())
+            .withOptions(b.setNumGpu(1).build())
+            .withOptions(b.setSeed(1).build())
+            .withOptions(b.setTopK(1).build())
+            .withOptions(b.setTopP(1).build())
+            .build();
+
+        String jsonRequest = serialize(req);
+        OllamaChatRequestModel deserializeRequest = deserialize(jsonRequest, OllamaChatRequestModel.class);
+        assertEqualsAfterUnmarshalling(deserializeRequest, req);
+        assertEquals(1, deserializeRequest.getOptions().get("mirostat"));
+        assertEquals(1.0, deserializeRequest.getOptions().get("temperature"));
+        assertEquals(1.0, deserializeRequest.getOptions().get("mirostat_eta"));
+        assertEquals(1.0, deserializeRequest.getOptions().get("mirostat_tau"));
+        assertEquals(1, deserializeRequest.getOptions().get("num_gpu"));
+        assertEquals(1, deserializeRequest.getOptions().get("seed"));
+        assertEquals(1, deserializeRequest.getOptions().get("top_k"));
+        assertEquals(1.0, deserializeRequest.getOptions().get("top_p"));
+    }
+
+    @Test
+    public void testWithJsonFormat() {
+        OllamaChatRequestModel req = builder.withMessage(OllamaChatMessageRole.USER, "Some prompt")
+                .withGetJsonResponse().build();
+
+        String jsonRequest = serialize(req);
+        // no jackson deserialization as format property is not boolean ==> omit as deserialization
+        // of request is never used in real code anyways
+        JSONObject jsonObject = new JSONObject(jsonRequest);
+        String requestFormatProperty = jsonObject.getString("format");
+        assertEquals("json", requestFormatProperty);
+    }
+
+    @Test
+    public void testWithTemplate() {
+        OllamaChatRequestModel req = builder.withTemplate("System Template")
+            .build();
+        String jsonRequest = serialize(req);
+        assertEqualsAfterUnmarshalling(deserialize(jsonRequest, OllamaChatRequestModel.class), req);
+    }
+
+    @Test
+    public void testWithStreaming() {
+        OllamaChatRequestModel req = builder.withStreaming().build();
+        String jsonRequest = serialize(req);
+        assertEquals(deserialize(jsonRequest, OllamaChatRequestModel.class).isStream(), true);
+    }
+
+    @Test
+    public void testWithKeepAlive() {
+        String expectedKeepAlive = "5m";
+        OllamaChatRequestModel req = builder.withKeepAlive(expectedKeepAlive)
+            .build();
+        String jsonRequest = serialize(req);
+        assertEquals(deserialize(jsonRequest, OllamaChatRequestModel.class).getKeepAlive(), expectedKeepAlive);
+    }
+}

src/test/java/io/github/amithkoujalgi/ollama4j/unittests/jackson/TestEmbeddingsRequestSerialization.java

@@ -0,0 +1,37 @@
+package io.github.amithkoujalgi.ollama4j.unittests.jackson;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import io.github.amithkoujalgi.ollama4j.core.models.embeddings.OllamaEmbeddingsRequestModel;
+import io.github.amithkoujalgi.ollama4j.core.models.embeddings.OllamaEmbeddingsRequestBuilder;
+import io.github.amithkoujalgi.ollama4j.core.utils.OptionsBuilder;
+
+public class TestEmbeddingsRequestSerialization extends AbstractSerializationTest<OllamaEmbeddingsRequestModel> {
+
+        private OllamaEmbeddingsRequestBuilder builder;
+
+        @BeforeEach
+        public void init() {
+            builder = OllamaEmbeddingsRequestBuilder.getInstance("DummyModel","DummyPrompt");
+        }
+
+            @Test
+    public void testRequestOnlyMandatoryFields() {
+        OllamaEmbeddingsRequestModel req = builder.build();
+        String jsonRequest = serialize(req);
+        assertEqualsAfterUnmarshalling(deserialize(jsonRequest,OllamaEmbeddingsRequestModel.class), req);
+    }
+
+        @Test
+        public void testRequestWithOptions() {
+            OptionsBuilder b = new OptionsBuilder();
+            OllamaEmbeddingsRequestModel req = builder
+                    .withOptions(b.setMirostat(1).build()).build();
+
+            String jsonRequest = serialize(req);
+            OllamaEmbeddingsRequestModel deserializeRequest = deserialize(jsonRequest,OllamaEmbeddingsRequestModel.class);
+            assertEqualsAfterUnmarshalling(deserializeRequest, req);
+            assertEquals(1, deserializeRequest.getOptions().get("mirostat"));
+        }
+}

src/test/java/io/github/amithkoujalgi/ollama4j/unittests/jackson/TestGenerateRequestSerialization.java

@@ -0,0 +1,56 @@
+package io.github.amithkoujalgi.ollama4j.unittests.jackson;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.json.JSONObject;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+
+import io.github.amithkoujalgi.ollama4j.core.models.generate.OllamaGenerateRequestBuilder;
+import io.github.amithkoujalgi.ollama4j.core.models.generate.OllamaGenerateRequestModel;
+import io.github.amithkoujalgi.ollama4j.core.utils.OptionsBuilder;
+
+public class TestGenerateRequestSerialization extends AbstractSerializationTest<OllamaGenerateRequestModel> {
+
+    private OllamaGenerateRequestBuilder builder;
+
+    @BeforeEach
+    public void init() {
+        builder = OllamaGenerateRequestBuilder.getInstance("DummyModel");
+    }
+
+    @Test
+    public void testRequestOnlyMandatoryFields() {
+        OllamaGenerateRequestModel req = builder.withPrompt("Some prompt").build();
+
+        String jsonRequest = serialize(req);
+        assertEqualsAfterUnmarshalling(deserialize(jsonRequest, OllamaGenerateRequestModel.class), req);
+    }
+
+    @Test
+    public void testRequestWithOptions() {
+        OptionsBuilder b = new OptionsBuilder();
+        OllamaGenerateRequestModel req =
+                builder.withPrompt("Some prompt").withOptions(b.setMirostat(1).build()).build();
+
+        String jsonRequest = serialize(req);
+        OllamaGenerateRequestModel deserializeRequest = deserialize(jsonRequest, OllamaGenerateRequestModel.class);
+        assertEqualsAfterUnmarshalling(deserializeRequest, req);
+        assertEquals(1, deserializeRequest.getOptions().get("mirostat"));
+    }
+
+    @Test
+    public void testWithJsonFormat() {
+        OllamaGenerateRequestModel req =
+                builder.withPrompt("Some prompt").withGetJsonResponse().build();
+
+        String jsonRequest = serialize(req);
+        // no jackson deserialization as format property is not boolean ==> omit as deserialization
+        // of request is never used in real code anyways
+        JSONObject jsonObject = new JSONObject(jsonRequest);
+        String requestFormatProperty = jsonObject.getString("format");
+        assertEquals("json", requestFormatProperty);
+    }
+
+}

src/test/java/io/github/amithkoujalgi/ollama4j/unittests/jackson/TestModelRequestSerialization.java

@@ -0,0 +1,42 @@
+package io.github.amithkoujalgi.ollama4j.unittests.jackson;
+
+import io.github.amithkoujalgi.ollama4j.core.models.Model;
+import org.junit.jupiter.api.Test;
+
+public class TestModelRequestSerialization extends AbstractSerializationTest<Model> {
+
+    @Test
+    public void testDeserializationOfModelResponseWithOffsetTime(){
+        String serializedTestStringWithOffsetTime = "{\n"
+                + "\"name\": \"codellama:13b\",\n"
+                + "\"modified_at\": \"2023-11-04T14:56:49.277302595-07:00\",\n"
+                + "\"size\": 7365960935,\n"
+                + "\"digest\": \"9f438cb9cd581fc025612d27f7c1a6669ff83a8bb0ed86c94fcf4c5440555697\",\n"
+                + "\"details\": {\n"
+                + "\"format\": \"gguf\",\n"
+                + "\"family\": \"llama\",\n"
+                + "\"families\": null,\n"
+                + "\"parameter_size\": \"13B\",\n"
+                + "\"quantization_level\": \"Q4_0\"\n"
+                + "}}";
+        deserialize(serializedTestStringWithOffsetTime,Model.class);
+    }
+
+    @Test
+    public void testDeserializationOfModelResponseWithZuluTime(){
+        String serializedTestStringWithZuluTimezone = "{\n"
+                + "\"name\": \"codellama:13b\",\n"
+                + "\"modified_at\": \"2023-11-04T14:56:49.277302595Z\",\n"
+                + "\"size\": 7365960935,\n"
+                + "\"digest\": \"9f438cb9cd581fc025612d27f7c1a6669ff83a8bb0ed86c94fcf4c5440555697\",\n"
+                + "\"details\": {\n"
+                + "\"format\": \"gguf\",\n"
+                + "\"family\": \"llama\",\n"
+                + "\"families\": null,\n"
+                + "\"parameter_size\": \"13B\",\n"
+                + "\"quantization_level\": \"Q4_0\"\n"
+                + "}}";
+        deserialize(serializedTestStringWithZuluTimezone,Model.class);
+    }
+
+}