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/pricing_api/

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": "把这个图改成真人版的"
                },
                {
                    "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 sk-jls4AaVBGoe1GwZD64qZA1qyKTN1MPHa4NmvH1cT68z7K1Zz' \
--header 'Content-Type: application/json' \
--data-raw '{
    "model": "gemini-2.0-flash-exp-image-generation",
    "stream": false,
    "messages": [
        {
            "role": "user",
            "content": [
                {
                    "type": "text",
                    "text": "把这个图改成真人版的"
                },
                {
                    "type": "image_url",
                    "image_url": {
                        "url": "https://s2.loli.net/2024/02/01/QSWVdw9bX56gj7O.jpg"
                    }
                }
            ]
        }
    ]
}'

Responses

🟢200OK

application/json

Body

Example

{
    "id": "chatcmpl-123",
    "object": "chat.completion",
    "created": 1677652288,
    "choices": [
        {
            "index": 0,
            "message": {
                "role": "assistant",
                "content": "\n\nHello there, how may I assist you today?"
            },
            "finish_reason": "stop"
        }
    ],
    "usage": {
        "prompt_tokens": 9,
        "completion_tokens": 12,
        "total_tokens": 21
    }
}

Modified at 2025-08-28 11:20:57

Chat（Analyze image）

Chat (Baidu ERNIE)