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Documentation Index

Fetch the complete documentation index at: https://apidoc.cometapi.com/llms.txt

Use this file to discover all available pages before exploring further.

Use CometAPI image model docs by choosing the request format that matches your workflow. OpenAI-compatible image endpoints cover common generation and editing flows; provider-specific pages cover task-based image systems.

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Choose an image API

GoalStart here
Generate images with an OpenAI-compatible requestImage Generations
Edit images with an OpenAI-compatible requestImage Editing
Generate or edit images with Gemini formatGemini Image Generation
Submit and poll Midjourney tasksMidjourney API Quick Start
Generate Flux imagesFlux Generate Image
Use Bria image toolsGenerate Image

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List available image models

The model catalog helps you choose an available image model ID: 
curl https://api.cometapi.com/api/models
The response includes model records that you can compare with the model directory: 
{
  "success": true,
  "page": 0,
  "page_size": 0,
  "total": 301,
  "data": [
    {
      "id": "gpt-image-2",
      "provider": "OpenAI",
      "model_type": "image",
      "features": [
        "text-to-image"
      ],
      "pricing": {
        "currency": "USD / M Tokens",
        "input": 4,
        "output": 24,
        "per_request": null,
        "per_second": null
      },
      "api_doc_url": "https://apidoc.cometapi.com/api/image/openai/images"
    }
  ]
}

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Generate an image

The following example sends an OpenAI-compatible image generation request: 
curl https://api.cometapi.com/v1/images/generations \
  -H "Authorization: Bearer $COMETAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-image-2",
    "prompt": "A clean product photo of a glass teapot on a white table",
    "size": "1024x1024"
  }'
The response returns generated image data for this model: 
{
  "created": 1779872000,
  "data": [
    {
      "b64_json": "iVBORw0KGgo..."
    }
  ],
  "usage": {
    "input_tokens": 19,
    "output_tokens": 196,
    "total_tokens": 215
  }
}

​
Common errors

ErrorFix
Invalid model IDChoose an image-capable model from the Models page.
Unsupported sizeUse a size that the selected image endpoint accepts.
Expired result URLDownload generated assets before provider links expire.
413Use image URLs or smaller files instead of large base64 payloads.
Last updated: May 27, 2026