feat(image): new feature for dalle api.

api/src/main/java/com/theokanning/openai/image/CreateImageEditRequest.java

@@ -21,6 +21,11 @@ public class CreateImageEditRequest {
     @NonNull
     String prompt;
 
+    /**
+     * The model to use for image generation. Only dall-e-2 is supported at this time. Defaults to dall-e-2.
+     */
+    String model;
+
     /**
      * The number of images to generate. Must be between 1 and 10. Defaults to 1.
      */

api/src/main/java/com/theokanning/openai/image/CreateImageRequest.java

@@ -17,18 +17,28 @@
 public class CreateImageRequest {
 
     /**
-     * A text description of the desired image(s). The maximum length in 1000 characters.
+     * A text description of the desired image(s). The maximum length is 1000 characters for dall-e-2 and 4000 characters for dall-e-3.
      */
     @NonNull
     String prompt;
 
     /**
-     * The number of images to generate. Must be between 1 and 10. Defaults to 1.
+     * The model to use for image generation. Defaults to "dall-e-2".
+     */
+    String model;
+
+    /**
+     * The number of images to generate. Must be between 1 and 10. For dall-e-3, only n=1 is supported. Defaults to 1.
      */
     Integer n;
 
     /**
-     * The size of the generated images. Must be one of "256x256", "512x512", or "1024x1024". Defaults to "1024x1024".
+     * The quality of the image that will be generated. "hd" creates images with finer details and greater consistency across the image. This param is only supported for dall-e-3. Defaults to "standard".
+     */
+    String quality;
+
+    /**
+     * The size of the generated images. Must be one of 256x256, 512x512, or 1024x1024 for dall-e-2. Must be one of 1024x1024, 1792x1024, or 1024x1792 for dall-e-3 models. Defaults to 1024x1024.
      */
     String size;
 
@@ -38,6 +48,11 @@ public class CreateImageRequest {
     @JsonProperty("response_format")
     String responseFormat;
 
+    /**
+     * The style of the generated images. Must be one of vivid or natural. Vivid causes the model to lean towards generating hyper-real and dramatic images. Natural causes the model to produce more natural, less hyper-real looking images. This param is only supported for dall-e-3. Defaults to vivid.
+     */
+    String style;
+
     /**
      * A unique identifier representing your end-user, which will help OpenAI to monitor and detect abuse.
      */

api/src/main/java/com/theokanning/openai/image/CreateImageVariationRequest.java

@@ -20,6 +20,11 @@ public class CreateImageVariationRequest {
      */
     Integer n;
 
+    /**
+     * The model to use for image generation. Only dall-e-2 is supported at this time. Defaults to dall-e-2.
+     */
+    String model;
+
     /**
      * The size of the generated images. Must be one of "256x256", "512x512", or "1024x1024". Defaults to "1024x1024".
      */

api/src/main/java/com/theokanning/openai/image/Image.java

@@ -21,4 +21,10 @@ public class Image {
      */
     @JsonProperty("b64_json")
     String b64Json;
+
+    /**
+     * The prompt that was used to generate the image, if there was any revision to the prompt.
+     */
+    @JsonProperty("revised_prompt")
+    String revisedPrompt;
 }

service/src/main/java/com/theokanning/openai/service/OpenAiService.java

@@ -250,6 +250,7 @@ public ImageResult createImageEdit(CreateImageEditRequest request, java.io.File
                 .setType(MediaType.get("multipart/form-data"))
                 .addFormDataPart("prompt", request.getPrompt())
                 .addFormDataPart("size", request.getSize())
+                .addFormDataPart("model", request.getModel())
                 .addFormDataPart("response_format", request.getResponseFormat())
                 .addFormDataPart("image", "image", imageBody);
 
@@ -276,6 +277,7 @@ public ImageResult createImageVariation(CreateImageVariationRequest request, jav
         MultipartBody.Builder builder = new MultipartBody.Builder()
                 .setType(MediaType.get("multipart/form-data"))
                 .addFormDataPart("size", request.getSize())
+                .addFormDataPart("model", request.getModel())
                 .addFormDataPart("response_format", request.getResponseFormat())
                 .addFormDataPart("image", "image", imageBody);