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Qwen Image 2.1: Text-to-Image and Image Editing on Models and API | RunComfy

qwen/qwen-image-2.1/edit

Qwen Image 2.1 writes stills from text and edits up to ten references, with native transparency, 1K or 2K output, and seed lock.

Table of contents

1. Get started2. Authentication3. API referenceSubmit a requestMonitor request statusRetrieve request resultsCancel a request4. File inputsHosted file (URL)5. SchemaInput schemaOutput schema

1. Get started

Use RunComfy's API to run qwen/qwen-image-2.1/edit. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/qwen/qwen-image-2.1/edit \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "image_urls": [
      "https://playgrounds-storage-public.runcomfy.net/tools/7461/media-files/output-example1-4.webp"
    ],
    "prompt": "Change the background to a warm golden-hour studio and add soft rim lighting, keep the subject and clothing unchanged."
  }'

2. Authentication

Set the YOUR_API_TOKEN environment variable with your API key (manage keys in your Profile) and include it on every request as a Bearer token via the Authorization header: Authorization: Bearer $YOUR_API_TOKEN.

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/qwen/qwen-image-2.1/edit \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "image_urls": [
      "https://playgrounds-storage-public.runcomfy.net/tools/7461/media-files/output-example1-4.webp"
    ],
    "prompt": "Change the background to a warm golden-hour studio and add soft rim lighting, keep the subject and clothing unchanged."
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancel a request

Cancel a queued job by request_id; in-progress jobs cannot be cancelled.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. File inputs

Hosted file (URL)

Provide a publicly reachable HTTPS URL. Ensure the host allows server-side fetches (no login/cookies required) and isn't rate-limited or blocking bots. Recommended limits: images ≤ 50 MB (~4K), videos ≤ 100 MB (~2–5 min @ 720p). Prefer stable or pre-signed URLs for private assets.

5. Schema

Input schema

{
  "type": "object",
  "title": "Input schema",
  "required": [
    "image_urls",
    "prompt"
  ],
  "properties": {
    "image_urls": {
      "title": "Input Image(s)",
      "description": "One to ten reference images. Order matches the prompt (the first image, the second image). JPEG, PNG, or WebP; each file up to 30MB and 25MP. Keep to four or fewer when identity must stay sharp.",
      "type": "array",
      "items": {
        "type": "string",
        "format": "image_uri"
      },
      "minItems": 1,
      "maxItems": 10,
      "validations": [
        {
          "validation_rule": "file_size_mb<",
          "validation_value": 30,
          "validation_error": "File size must be less than 30 MB."
        }
      ],
      "default": [
        "https://playgrounds-storage-public.runcomfy.net/tools/7461/media-files/output-example1-4.webp"
      ]
    },
    "prompt": {
      "title": "Edit Instruction",
      "description": "Describe the change in plain language: what to add, remove, restyle, or replace. Quote any text to render it verbatim. With a mask, describe what should appear in the white area.",
      "type": "string",
      "default": "Change the background to a warm golden-hour studio and add soft rim lighting, keep the subject and clothing unchanged."
    },
    "mask_url": {
      "title": "Mask Image",
      "description": "Optional black-and-white local-edit mask. White marks the area to change; black stays. Requires exactly one reference image, cannot pair with a transparent background, and ignores aspect ratio and prompt rewrite.",
      "type": "string"
    },
    "aspect_ratio": {
      "title": "Aspect Ratio (W:H)",
      "description": "Output aspect ratio. auto uses the first reference. Ignored in mask mode.",
      "type": "string",
      "enum": [
        "auto",
        "1:1",
        "4:3",
        "3:4",
        "3:2",
        "2:3",
        "16:9",
        "9:16",
        "21:9",
        "9:21"
      ],
      "default": "auto"
    },
    "resolution": {
      "title": "Resolution",
      "description": "Output detail tier. 1K is faster; 2K has about four times the pixels and costs more.",
      "type": "string",
      "enum": [
        "1K",
        "2K"
      ],
      "default": "1K"
    },
    "background": {
      "title": "Background",
      "description": "opaque for a regular photo. transparent writes a real alpha channel — describe only the subject, and do not use JPEG. Cannot combine with a mask.",
      "type": "string",
      "enum": [
        "opaque",
        "transparent"
      ],
      "default": "opaque"
    },
    "output_format": {
      "title": "Output Format",
      "description": "PNG and WebP can carry an alpha channel. JPEG cannot, so it cannot be combined with a transparent background.",
      "type": "string",
      "enum": [
        "png",
        "webp",
        "jpeg"
      ],
      "default": "png"
    },
    "enhance_prompt": {
      "title": "Enhance Prompt",
      "description": "Rewrite a short instruction into a fuller scene before editing. Turn off when the instruction is already exact. Ignored in mask mode.",
      "type": "boolean",
      "default": true
    },
    "seed": {
      "title": "Seed",
      "description": "Random seed for reproducibility. Use -1 for a random seed each run.",
      "type": "integer",
      "default": -1
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}
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