> ## Documentation Index > Fetch the complete documentation index at: https://docs.sigrunai.com/llms.txt > Use this file to discover all available pages before exploring further. # Create Seedream 5.5 task > 创建 GPT Image 2、GPT Image 2.6、Nano Banana、Seedream 5.5 或 Muse Image 生图任务。 Create an async Seedream 5.5 image task. Poll with [Query image task](https://docs.sigrunai.com/en/api-reference/images/query.md) and read `result.image_url` when completed. For GPT Image 2, see [Create GPT Image 2 task](https://docs.sigrunai.com/en/api-reference/images/create.md). For GPT Image 2.6, see [Create GPT Image 2.6 task](https://docs.sigrunai.com/en/api-reference/images/gpt-image-2.6.md). For Nano Banana, see [Create Nano Banana task](https://docs.sigrunai.com/en/api-reference/images/nano-banana.md). For Muse Image, see [Create Muse Image task](https://docs.sigrunai.com/en/api-reference/images/muse-image.md). ## Models | `model` | Notes | `resolution` | Billing keys | | - | - | - | - | | `seedream-5.5` | Text-to-image / reference images; 1 image per request | `1K` / `2K` (also `1k` / `2k`) | `seedream-5.5-1k` / `seedream-5.5-2k` | Billing is by resolution (`per_task`, 1 image per request). Check [Model catalog](https://docs.sigrunai.com/en/api-reference/common/model-catalog.md) and the create response `cost` for live prices. You may also pass a billing key as `model`. ## Request body | Field | Type | Required | Description | | - | - | - | - | | `model` | string | yes | `seedream-5.5`, or `seedream-5.5-1k` / `seedream-5.5-2k` | | `prompt` | string | conditional | Required for text-to-image; optional when `images` is set. Up to **4000** characters | | `n` | int | no | Always **1** | | `ratio` | string | no | Aspect ratio; `size` is an alias. Options: `1:1` / `16:9` / `9:16` / `4:3` / `3:4` / `3:2` / `2:3` / `21:9` / `5:4` / `4:5` | | `size` | string | no | Alias of `ratio` | | `resolution` | string | no | Resolution tier, default `1K` | | `images` | string\[] | no | Public reference image URLs, max **8** | | `smart_queue` | bool | no | Default `false`. When `true`, a very low recent success rate keeps the task `queued` until recovery (up to about 2 hours). See [Smart queue](https://docs.sigrunai.com/en/api-reference/common/smart-queue.md) | ## Examples ### Text-to-image (1K) ```bash theme={null} curl -X POST 'https://sigrunai.com/v1/images' \ -H 'Authorization: Bearer sk_xxx' \ -H 'Content-Type: application/json' \ -d '{ "model": "seedream-5.5", "prompt": "A blue cup on a wooden table, soft natural light", "ratio": "1:1", "resolution": "1K" }' ``` ### Reference image (2K) ```bash theme={null} curl -X POST 'https://sigrunai.com/v1/images' \ -H 'Authorization: Bearer sk_xxx' \ -H 'Content-Type: application/json' \ -d '{ "model": "seedream-5.5", "prompt": "Keep the product look, soft studio lighting background", "ratio": "16:9", "resolution": "2K", "images": ["https://example.com/reference.jpg"] }' ``` Success response example: ```json theme={null} { "code": 20000, "msg": "提交成功", "data": { "task_id": "img_xxxxxxxx", "status": "queued", "progress": 0, "model": "seedream-5.5-1k", "cost": 0.05, "result": {} } } ``` ## OpenAPI ````yaml POST /v1/images openapi: 3.1.0 info: title: AI Platform OpenAPI description: 异步图片与视频生成。创建后轮询 task_id；结果 URL 约保留 3 天。 version: 1.0.0 servers: - url: https://sigrunai.com description: AI Platform 生产环境 security: - bearerAuth: [] paths: /v1/images: post: tags: - Images summary: Create image task description: >- Create an async GPT Image 2, GPT Image 2.6, Nano Banana, Seedream 5.5, or Muse Image task. operationId: createImage requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ImageCreateRequest' examples: gptImage2: summary: gpt-image-2 value: model: gpt-image-2 prompt: Minimal product still life, white background, soft light quality: medium 'n': 1 ratio: '1:1' gptImage26: summary: gpt-image-2.6-flare value: model: gpt-image-2.6-flare prompt: Minimal product still life, white background, soft light quality: medium 'n': 1 ratio: '1:1' resolution: 1k output_format: png nanoBanana2: summary: nano-banana-2 value: model: nano-banana-2 prompt: >- Cinematic sunset over a lake, golden light on distant mountains ratio: '16:9' resolution: 2k nanoBananaPro: summary: nano-banana-pro value: model: nano-banana-pro prompt: Keep the product look, switch to soft studio lighting ratio: '1:1' resolution: 4k images: - https://example.com/product.jpg seedream55: summary: seedream-5.5 value: model: seedream-5.5 prompt: A blue cup on a wooden table, soft natural light ratio: '1:1' resolution: 1K museImage: summary: muse-image value: model: muse-image prompt: A misty forest at dawn, photorealistic ratio: '16:9' style: photorealistic negative_prompt: watermark, text responses: '200': description: 提交成功 content: application/json: schema: $ref: '#/components/schemas/TaskQueryResponse' components: schemas: ImageCreateRequest: type: object required: - model properties: model: type: string description: >- gpt-image-2 (plus low/medium/high), gpt-image-2.6-flare / gpt-image-2.6-sunburst, nano-banana-2 / nano-banana-2.1 / nano-banana-pro, seedream-5.5, or muse-image example: nano-banana-2 prompt: type: string minLength: 1 maxLength: 32000 description: >- GPT Image 2 / Seedream 5.5 / Muse Image max 4000; GPT Image 2.6 max 32000; Nano Banana max 10000. Nano Banana / Seedream prompt is optional when images are provided. Muse Image prompt is always required quality: type: string enum: - auto - low - medium - high - xhigh - max default: auto description: >- GPT Image 2: auto / low / medium / high, billed by tier. GPT Image 2.6 also accepts xhigh / max without changing the price 'n': type: integer minimum: 1 maximum: 4 default: 1 description: >- GPT Image 2 accepts 1–4. GPT Image 2.6, Nano Banana, Seedream 5.5, and Muse Image accept 1 only ratio: type: string size: type: string description: >- Alias of ratio. GPT Image 2.6 accepts auto or an aspect ratio, not a pixel size. Muse Image reduces a pixel size such as 1024x1024 to its ratio resolution: type: string description: >- GPT Image 2.6 accepts 1k only. Nano Banana: 0.5k/1k/2k/4k depending on the model images: type: array items: type: string format: uri maxItems: 16 description: >- Reference image URLs. GPT Image 2 max 15; GPT Image 2.6 max 16; Nano Banana max 5; Seedream 5.5 max 8; Muse Image max 10. GPT Image 2.6 svg and gif cannot include reference images output_format: type: string enum: - png - jpeg - webp - svg - gif description: >- GPT Image 2.6 only. jpg is treated as jpeg. For gif, omit size or send auto style: type: string maxLength: 1000 description: >- Muse Image only. Free-text style such as photorealistic, anime, or cinematic negative_prompt: type: string maxLength: 1000 description: Muse Image only. What should not appear, kept apart from prompt smart_queue: type: boolean default: false description: >- When true, a very low recent success rate keeps the task queued until recovery (up to about 2 hours) TaskQueryResponse: type: object properties: code: type: integer example: 20000 msg: type: string data: $ref: '#/components/schemas/TaskQueryData' TaskQueryData: type: object properties: task_id: type: string status: type: string description: queued / processing / completed / failed 等 progress: type: integer model: type: string created_at: type: integer completed_at: type: integer cost: type: number error_message: type: string result: $ref: '#/components/schemas/TaskResult' TaskResult: type: object properties: image_url: type: string video_url: type: string securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: API Key description: 控制台创建的 API Key，格式：Bearer sk_xxx ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.