> ## Documentation Index > Fetch the complete documentation index at: https://docs.vidgo.ai/llms.txt > Use this file to discover all available pages before exploring further. # GPT Image 2.6 Sunburst Text to Image > The GPT Image 2.6 Sunburst Text to Image API turns a prompt into one 1K, 2K or 4K image, with transparent backgrounds, output compression and moderation control. > [!TIP] > > 1. After submission, a `task_id` will be returned. If you provided a `callback_url`, when the task status becomes `finished` or `failed`, a POST request will be sent to the `callback_url`. > 2. Regardless of whether `callback_url` is provided, you can retrieve the result through the unified [Query Task Status](https://docs.vidgo.ai/api-manual/task-management/status.md) endpoint. GPT Image 2.6 Sunburst Text to Image generates one image from a text prompt, from quick product shots to transparent assets and exact-pixel layouts at 1K, 2K or 4K. Sunburst is the GPT Image 2.6 option for detailed visual work and precision-focused editing. For reference-image editing, use [GPT Image 2.6 Sunburst Image Edit](https://docs.vidgo.ai/api-manual/image-series/gpt-image-2-6-sunburst-edit.md) (`openai/gpt-image-2.6-sunburst/edit`). GPT Image 2.6 accepts the same parameters as [GPT Image 2.5 Sunburst](https://docs.vidgo.ai/api-manual/image-series/gpt-image-2-5-sunburst-text-to-image.md), plus `output_compression`, `moderation` and `complexity`. ## Models * **openai/gpt-image-2.6-sunburst/text-to-image** — Text to image with GPT Image 2.6 Sunburst, one image per request. ## Features * Text-to-image from a prompt of up to 32,000 characters. * Three resolution tiers (`1K`, `2K`, `4K`) with aspect-ratio presets, `auto`, or custom `WIDTHxHEIGHT` sizes. * Five quality tiers: `low`, `medium`, `high`, `xhigh`, `max`. * Transparent or opaque backgrounds; PNG, JPEG or WebP output. * Adjustable JPEG/WebP compression, moderation strictness and planning effort (`complexity`). ## Required parameters * `prompt` (string): Text describing the desired image. Up to 32,000 characters; must not be blank. ## Optional parameters * `size` (string): Aspect-ratio preset, `auto`, or custom `WIDTHxHEIGHT`. Default `1:1`. See [Size](#size). * `resolution` (string): `1K`, `2K` or `4K`. Default `1K`. * `quality` (string): `low`, `medium`, `high`, `xhigh` or `max`. Default `high`. * `background` (string): `auto`, `transparent` or `opaque`. Default `auto`. A transparent background requires `png` or `webp` output. * `output_format` (string): `png`, `jpeg` or `webp`. Default `png`. * `output_compression` (integer): Compression level from `0` to `100`. Only allowed when `output_format` is `jpeg` or `webp`. When omitted, the default compression applies. * `moderation` (string): Content moderation strictness, `auto` or `low`. Default `auto`; `low` applies less restrictive filtering. * `complexity` (string): Planning effort the model spends before generating, `low`, `medium` or `high`. Default `high`. Does not change the price. ## Size * Presets: `1:1`, `2:3`, `3:2`, `4:3`, `3:4`, `4:5`, `5:4`, `16:9`, `9:16`, `21:9`. When `size` is omitted, the output is `1:1` at the selected `resolution`. * Presets keep the selected `resolution` tier; actual pixel dimensions may vary between generations. Use a custom size when you need exact pixels. * `auto` lets the model choose the size (about 1.5 megapixels). It works with any `resolution` and is billed at the `1K` tier. * Custom `WIDTHxHEIGHT` (use `x` or `X`, for example `2304x1536`) works with any `resolution`. Both edges must be multiples of 16, the longest edge must not exceed 3,840 pixels, the aspect ratio must not exceed 3:1, and total pixels must be between 655,360 and 8,294,400. * A custom size is billed at the tier that matches its total pixels, or at the selected `resolution` if that is higher: | Total pixels (custom size) | Billing tier | | - | - | | Up to 1,572,864 | `1K` | | 1,572,865–4,194,304 | `2K` | | Above 4,194,304 | `4K` | ## Examples * **Generate one image**: a studio product photo, `1:1`, `1K`, with a `callback_url`. * **Transparent asset**: a cutout with `background: transparent`, WebP, `4K`, `xhigh` quality. * **Custom size**: a panoramic scene at `2304x1536`, `2K`, `medium` quality. * **Compressed JPEG**: `3:2`, `medium` quality, `output_format: jpeg`, `output_compression: 80`. ## Notes * Each request returns exactly one image; `n` other than `1` returns 400. Fields not listed above return 400. `model` and `callback_url` belong at the request root, not inside `input`. * A transparent background with `output_format: jpeg` returns 400. `output_compression` with `output_format: png` also returns 400. * Credits depend on `quality` and the billing tier (`resolution`, or the custom-size tier described in [Size](#size)). `complexity` and `moderation` do not change the price. The per-image maximum is reserved at submission; when the task finishes you are charged for actual token usage, up to that maximum, and the rest is refunded. A failed task is refunded in full. See the [pricing page](https://vidgo.ai/apis/api-pricing) for current rates. ## OpenAPI ````yaml api-manual/image-series/gpt-image-2-6-sunburst-text-to-image.json POST /api/generate/submit openapi: 3.0.0 info: title: Vidgo API - GPT Image 2.6 Sunburst Text to Image description: >- The GPT Image 2.6 Sunburst Text to Image API turns a prompt into one 1K, 2K or 4K image, with transparent backgrounds, output compression and moderation control. version: 1.0.0 servers: - url: https://api.vidgo.ai description: Production server security: - BearerAuth: [] paths: /api/generate/submit: post: tags: - GPT Image 2.6 Sunburst Text to Image summary: Submit GPT Image 2.6 Sunburst Text to Image Task operationId: submitGPTImage26SunburstTexttoImageTask requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/SubmitRequest' examples: default: summary: Generate one image value: model: openai/gpt-image-2.6-sunburst/text-to-image callback_url: https://your-domain.com/callback input: prompt: >- A product photograph of a silver coffee maker in a bright studio. size: '1:1' resolution: 1K transparent-background: summary: Create a transparent asset value: model: openai/gpt-image-2.6-sunburst/text-to-image input: prompt: A clean cutout of a small silver robot. background: transparent output_format: webp resolution: 4K quality: xhigh custom-size: summary: Generate with custom dimensions value: model: openai/gpt-image-2.6-sunburst/text-to-image input: prompt: A panoramic city garden with soft morning light. size: 2304x1536 resolution: 2K quality: medium compressed-jpeg: summary: Compressed JPEG output value: model: openai/gpt-image-2.6-sunburst/text-to-image input: prompt: >- A ceramic coffee cup on a linen tablecloth, soft window light size: '3:2' quality: medium output_format: jpeg output_compression: 80 responses: '200': description: >- Task submission result. A task ID identifies asynchronous work; generation may still be running. content: application/json: schema: $ref: '#/components/schemas/SubmitResponse' '400': description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' components: schemas: SubmitRequest: type: object required: - model - input additionalProperties: false properties: model: type: string example: openai/gpt-image-2.6-sunburst/text-to-image callback_url: type: string format: uri description: Optional webhook URL for completion or failure notifications. example: https://your-domain.com/callback input: type: object required: - prompt additionalProperties: false properties: prompt: type: string minLength: 1 maxLength: 32000 description: |- Text describing the desired image. Include at least one non-whitespace character. size: type: string description: >- Output aspect-ratio preset, auto, or custom WIDTHxHEIGHT. Defaults to 1:1. Presets: `1:1`, `2:3`, `3:2`, `4:3`, `3:4`, `4:5`, `5:4`, `16:9`, `9:16`, `21:9`. `auto` lets the model choose the size at any resolution and is billed at 1K. Custom sizes work at any resolution: both edges multiples of 16, maximum edge 3840, aspect ratio at most 3:1, and 655360–8294400 total pixels. Use `x` or `X` between width and height. They are billed at the tier matching total pixels (up to 1572864 is 1K, up to 4194304 is 2K, larger is 4K), or the selected resolution if it is higher. default: '1:1' resolution: type: string enum: - 1K - 2K - 4K default: 1K description: Output resolution tier. output_format: type: string enum: - png - jpeg - webp default: png description: |- Output image format. Transparent output requires PNG or WebP. output_compression: type: integer minimum: 0 maximum: 100 description: >- Compression level for the output image, from 0 to 100. Only allowed when output_format is jpeg or webp; any other format returns 400. When omitted, the default compression applies. quality: type: string enum: - low - medium - high - xhigh - max default: high description: |- Image quality tier. Billing depends on quality and the billing tier. background: type: string enum: - auto - transparent - opaque default: auto description: |- Background mode. Transparent output requires PNG or WebP. moderation: type: string enum: - auto - low default: auto description: |- Content moderation strictness. low applies less restrictive filtering. complexity: type: string enum: - low - medium - high default: high description: |- Planning effort the model spends before generating. Does not change the price. SubmitResponse: type: object required: - code - data properties: code: type: integer example: 200 data: type: object required: - task_id - status - created_time properties: task_id: type: string example: task-example-001 status: type: string example: not_started created_time: type: string format: date-time example: '2026-10-09T10:30:00' ErrorResponse: type: object required: - detail properties: detail: type: string description: Error message. See [Error Codes](/api-manual/error-codes). example: prompt is required securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: API Key description: 'Use `Authorization: Bearer VIDGO_API_KEY`.' ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.