Chat（Image Generation）

POST

/chat/completions

The newest Gemini models support both text-to-image and image-to-image generation. Simply pass an image URL using the image_url parameter.

Supported Models

gemini-2.5-flash-image-preview

gemini-2.0-flash-exp-image-generation

gemini-2.0-flash-preview-image-generation

Notes

The API format has been upgraded for OpenAI compatibility, and all responses are returned in Markdown format. Streaming is not supported for these models.

The models automatically utilize conversation history for contextual image editing.

For pricing, see: https://302.ai/price

Request

Header Params

Body Params application/json

Example

{
    "model": "gemini-2.0-flash-exp-image-generation",
    "stream": false,
    "messages": [
        {
            "role": "user",
            "content": [
                {
                    "type": "text",
                    "text": "Turn this picture into a live-action version."
                },
                {
                    "type": "image_url",
                    "image_url": {
                        "url": "https://s2.loli.net/2024/02/01/QSWVdw9bX56gj7O.jpg"
                    }
                }
            ]
        }
    ]
}

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location --request POST 'https://api.302.ai/v1/chat/completions' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer ' \
--header 'Content-Type: application/json' \
--data-raw '{
    "model": "gemini-2.0-flash-exp-image-generation",
    "stream": false,
    "messages": [
        {
            "role": "user",
            "content": [
                {
                    "type": "text",
                    "text": "Turn this picture into a live-action version."
                },
                {
                    "type": "image_url",
                    "image_url": {
                        "url": "https://s2.loli.net/2024/02/01/QSWVdw9bX56gj7O.jpg"
                    }
                }
            ]
        }
    ]
}'

Responses

🟢200OK

application/json

Body

Example

{
    "choices": [
        {
            "finish_reason": "stop",
            "index": 0,
            "message": {
                "content": "![image](https://file.302.ai/gpt/imgs/20260112/9df47144eb744ffea56914d7297c02ab.jpeg)",
                "role": "assistant"
            }
        }
    ],
    "created": 1768203150,
    "id": "chatcmpl-20260112153214767482089AYbkQ5Am",
    "model": "gemini-3-pro-image-preview",
    "object": "chat.completion",
    "usage": {
        "completion_tokens": 1494,
        "completion_tokens_details": {
            "accepted_prediction_tokens": 0,
            "audio_tokens": 0,
            "reasoning_tokens": 214,
            "rejected_prediction_tokens": 0
        },
        "prompt_tokens": 265,
        "prompt_tokens_details": {
            "audio_tokens": 0,
            "cached_tokens": 0
        },
        "total_tokens": 1759
    }
}

Modified at 2026-01-12 07:34:07

Chat（Analyze image）

Chat (Baidu ERNIE)