Qwen Qwen Image 2.1 T2I API | Pricing & Docs

qwen/qwen-image-2.1/text-to-image

Qwen Image 2.1 T2I turns text prompts into 1K or 2K stills with aspect-ratio control, native transparency, prompt rewrite, and seed lock.

1. Get started

Use RunComfy's API to run qwen/qwen-image-2.1/text-to-image. 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/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A linen tote on a sunlit marble ledge, oversized navy serif type reading \"HARBOR LINEN\", a small caption \"Washed canvas · Est. 2012\", soft contact shadow, catalog still, no extra logos."
  }'

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/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A linen tote on a sunlit marble ledge, oversized navy serif type reading \"HARBOR LINEN\", a small caption \"Washed canvas · Est. 2012\", soft contact shadow, catalog still, no extra logos."
  }'

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": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "Describe the subject, setting, style, and any exact text you want rendered. Put wording in quotes to render it verbatim.",
      "type": "string",
      "default": "A linen tote on a sunlit marble ledge, oversized navy serif type reading \"HARBOR LINEN\", a small caption \"Washed canvas · Est. 2012\", soft contact shadow, catalog still, no extra logos."
    },
    "aspect_ratio": {
      "title": "Aspect Ratio (W:H)",
      "description": "Output aspect ratio. Pixel size also depends on the resolution tier.",
      "type": "string",
      "enum": [
        "1:1",
        "4:3",
        "3:4",
        "3:2",
        "2:3",
        "16:9",
        "9:16",
        "21:9",
        "9:21"
      ],
      "default": "1:1"
    },
    "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.",
      "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 prompt into a fuller scene before generating. Turn off when your prompt is already exact.",
      "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"
        }
      }
    }
  }
}

RunComfy

RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.

1. Get started

Use RunComfy's API to run qwen/qwen-image-2.1/text-to-image. 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/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A linen tote on a sunlit marble ledge, oversized navy serif type reading \"HARBOR LINEN\", a small caption \"Washed canvas · Est. 2012\", soft contact shadow, catalog still, no extra logos."
  }'

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/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A linen tote on a sunlit marble ledge, oversized navy serif type reading \"HARBOR LINEN\", a small caption \"Washed canvas · Est. 2012\", soft contact shadow, catalog still, no extra logos."
  }'

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)

5. Schema

Input schema

{
  "type": "object",
  "title": "Input schema",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "Describe the subject, setting, style, and any exact text you want rendered. Put wording in quotes to render it verbatim.",
      "type": "string",
      "default": "A linen tote on a sunlit marble ledge, oversized navy serif type reading \"HARBOR LINEN\", a small caption \"Washed canvas · Est. 2012\", soft contact shadow, catalog still, no extra logos."
    },
    "aspect_ratio": {
      "title": "Aspect Ratio (W:H)",
      "description": "Output aspect ratio. Pixel size also depends on the resolution tier.",
      "type": "string",
      "enum": [
        "1:1",
        "4:3",
        "3:4",
        "3:2",
        "2:3",
        "16:9",
        "9:16",
        "21:9",
        "9:21"
      ],
      "default": "1:1"
    },
    "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.",
      "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 prompt into a fuller scene before generating. Turn off when your prompt is already exact.",
      "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"
        }
      }
    }
  }
}

Qwen Image 2.1 T2I turns text prompts into 1K or 2K stills with aspect-ratio control, native transparency, prompt rewrite, and seed lock.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

Qwen Image 2.1 T2I turns text prompts into 1K or 2K stills with aspect-ratio control, native transparency, prompt rewrite, and seed lock.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

Qwen Image 2.1 T2I: Text-to-Image with Transparency on Models and API | RunComfy

Qwen Image 2.1 T2I turns text prompts into 1K or 2K stills with aspect-ratio control, native transparency, prompt rewrite, and seed lock.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

Qwen Image 2.1 T2I: Text-to-Image with Transparency on Models and API | RunComfy

Qwen Image 2.1 T2I turns text prompts into 1K or 2K stills with aspect-ratio control, native transparency, prompt rewrite, and seed lock.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema