> ## 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. # Flux Kontext Image Generation > Image generation and image editing models powered by Black Forest Labs Flux Kontext 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 response result through the unified [Query Task Status](/api-manual/task-management/status) endpoint. # Flux Kontext Image Generation Flux Kontext is powered by Black Forest Labs. It supports both text-to-image generation and image editing through the same unified submit endpoint. ## Available Models * **flux-kontext-pro** - Flux Kontext Pro text-to-image generation * **flux-kontext-pro-edit** - Flux Kontext Pro image editing, `image_urls` is required * **flux-kontext-max** - Flux Kontext Max text-to-image generation * **flux-kontext-max-edit** - Flux Kontext Max image editing, `image_urls` is required ## Notes * `size` supports `1:1`, `4:3`, `3:4`, `16:9`, `9:16`, `21:9`, `9:21` * `output_format` supports `png`, `jpg` * `image_urls` is required for edit models * Only `image_urls[0]` is used as the input image * Other downstream fields are not exposed in the current API and use system defaults * Credits are charged directly according to the configured model price ## OpenAPI ````yaml /api-manual/image-series/flux-kontext.json POST /api/generate/submit openapi: 3.0.0 info: title: Vidgo API - Flux Kontext API description: >- Image generation and image editing models powered by Black Forest Labs Flux Kontext version: 1.0.0 servers: - url: https://api.vidgo.ai description: Production server security: - BearerAuth: [] paths: /api/generate/submit: post: tags: - Flux Kontext summary: Submit Flux Kontext Generation Task description: >- Generate or edit images with Flux Kontext models through the unified submit endpoint operationId: submitFluxKontextTask requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/SubmitRequest' examples: flux-kontext-pro: summary: Flux Kontext Pro Image Generation value: model: flux-kontext-pro callback_url: https://your-domain.com/callback input: prompt: >- A luxury perfume bottle on a reflective marble surface, premium studio lighting size: '16:9' output_format: png flux-kontext-pro-edit: summary: Flux Kontext Pro Image Edit value: model: flux-kontext-pro-edit callback_url: https://your-domain.com/callback input: prompt: >- Replace the background with a clean warm gradient studio backdrop image_urls: - https://example.com/reference.jpg size: '1:1' output_format: jpg flux-kontext-max: summary: Flux Kontext Max Image Generation value: model: flux-kontext-max callback_url: https://your-domain.com/callback input: prompt: >- A premium wristwatch product photo with dramatic soft shadows and metallic highlights size: '4:3' output_format: png flux-kontext-max-edit: summary: Flux Kontext Max Image Edit value: model: flux-kontext-max-edit callback_url: https://your-domain.com/callback input: prompt: Change the background into a minimal teal studio scene image_urls: - https://example.com/reference.jpg size: '1:1' output_format: jpg responses: '200': description: Task submitted successfully content: application/json: schema: $ref: '#/components/schemas/SubmitResponse' '400': description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 400 error: message: Invalid request parameters type: invalid_request_error '401': description: Unauthorized - Invalid API key content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 401 error: message: Unauthorized - Invalid API key type: authentication_error components: schemas: SubmitRequest: type: object required: - model - input properties: model: type: string description: Flux Kontext model identifier enum: - flux-kontext-pro - flux-kontext-pro-edit - flux-kontext-max - flux-kontext-max-edit callback_url: type: string format: uri description: Webhook callback URL for result notifications example: https://your-domain.com/callback input: type: object required: - prompt description: Input parameters for generation properties: prompt: type: string description: Generation or editing prompt describing the desired output maxLength: 2000 example: A beautiful sunset over the ocean image_urls: type: array items: type: string format: uri minItems: 1 maxItems: 1 description: |- Input image URLs. Required for edit models (flux-kontext-pro-edit, flux-kontext-max-edit). Only the first image is used. example: - https://example.com/reference.jpg size: type: string description: Output aspect ratio. Defaults to 1:1 when omitted. enum: - '1:1' - '4:3' - '3:4' - '16:9' - '9:16' - '21:9' - '9:21' default: '1:1' example: '16:9' output_format: type: string description: Output image format. enum: - png - jpg example: png SubmitResponse: type: object required: - code - data properties: code: type: integer example: 200 description: HTTP status code data: type: object required: - task_id - status - created_time properties: task_id: type: string example: task-unified-1757165031-uyujaw3d description: Unique task identifier for status tracking status: type: string enum: - not_started example: not_started description: Initial task status created_time: type: string format: date-time example: '2025-11-12T10:30:00' description: ISO 8601 timestamp when the task was created ErrorResponse: type: object required: - code - error properties: code: type: integer example: 400 description: HTTP status code error: type: object required: - message - type properties: message: type: string example: Invalid request parameters description: Error message describing what went wrong type: type: string example: invalid_request_error description: Error type identifier securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: API Key description: >- All API endpoints require Bearer Token authentication Get your API Key: Visit the [API Key Management Page](https://vidgo.ai/apis/dashboard/api-key) to get your API Key Add it to the request header: ``` Authorization: Bearer YOUR_API_KEY ``` ````