> ## Documentation Index > Fetch the complete documentation index at: https://docs.apisale.ai/llms.txt > Use this file to discover all available pages before exploring further. # FLUX 3 — Draft Enhance > Black Forest Labs FLUX 3 — first BFL video model, up to 20s with audio; text / image / first-last / keyframes / extend, plus Draft. Optimized for draft enhance via apisale. ## Overview Black Forest Labs FLUX 3 — first BFL video model, up to 20s with audio; text / image / first-last / keyframes / extend, plus Draft. Optimized for draft enhance via apisale. **Docs** = API contract + Try it (snapshot). **[Explore](https://apisale.ai/explore)** = browser playground. **[Model page](https://apisale.ai/models/blackforestlabs/flux-3/draft-enhance)** = product examples. ## Endpoint ```http theme={null} POST https://api.apisale.ai/v1/run/blackforestlabs/flux-3/draft-enhance ``` | | | | -------------- | -------------------------------------- | | **Model slug** | `blackforestlabs/flux-3/draft-enhance` | | **Category** | Draft Enhance (`enhance-video`) | | **Lab** | Blackforestlabs | | **Mode** | async | ## Pricing **From \$0.203/sec** apisale price is **30%** below the vendor's official list price. | Tier | Unit | Official price | apisale price | | ------------------- | ------ | -------------- | ------------- | | Draft Enhance 1080p | second | \$0.290 | \$0.203 | **Official price** = vendor list price. **apisale price** = what you pay through apisale. ## Request ```json theme={null} {‌ "input": {‌ "draft_cache_url": "", "safety_tolerance": 2, "prompt": "Enhance the draft cache to full FLUX 3 quality, richer lighting and detail", "duration": 5, "video_url": "https://assets.apisale.ai/permanent/official/google/veo-3.1/example-veo31-t2v-v2.mp4", "resolution": "720p" } } ``` ### Parameters Fields marked \* are required. Use `Authorization: Key YOUR_API_KEY` for REST. URL of the encrypted draft cache bundle returned by a flux-3 draft endpoint. 0 is the strictest, 4 the most permissive. Default: `2` Range: 0 – 4 Optional HTTPS webhook when the run reaches a terminal state. Block until completion (same Run response shape). ```json expandable theme={null} {‌ "params": {‌ "draft_cache_url": {‌ "type": "string", "required": true, "description": "URL of the encrypted draft cache bundle returned by a flux-3 draft endpoint." }, "safety_tolerance": {‌ "max": 4, "min": 0, "type": "int", "default": 2, "description": "0 is the strictest, 4 the most permissive." } } } ``` ## Submit response Returns a **Run** with `run_id`. Poll with [GET /v1/runs/\{run\_id}](/model-apis/poll-runs) or use **Try it** above. Unique run ID — save for polling and webhooks. `queued` (async) or terminal state for sync runs. Result when `status` is `succeeded` — see **Output schema** below. ### Example (async submit) ```json theme={null} { "run_id": "run_550e8400-e29b-41d4-a716-446655440000", "endpoint": "blackforestlabs/flux-3/draft-enhance", "model": "draft-enhance", "capability": "video", "mode": "enhance-video", "status": "queued", "output": null, "error": null, "billing": null, "created_at": "2026-06-27T12:00:00.000Z", "started_at": null, "completed_at": null, "elapsed_ms": null } ``` Full lifecycle: [Runs lifecycle](/model-apis/runs-lifecycle). ## Output When `status` is `succeeded`, `output` follows this schema: ```json expandable theme={null} {‌ "type": "object", "example": {‌ "videos": [ {‌ "url": "https://example.com/out.mp4", "content_type": "video/mp4" } ] }, "required": [ "videos" ], "properties": {‌ "videos": {‌ "type": "array", "items": {‌ "type": "object", "required": [ "url" ], "properties": {‌ "url": {‌ "type": "string" }, "file_name": {‌ "type": "string" }, "content_type": {‌ "type": "string" } } } } }, "description": "Succeeded task output: single enhanced video URL (full-quality 1080p with audio)." } ``` ## Example ```bash theme={null} curl -X POST "https://api.apisale.ai/v1/run/blackforestlabs/flux-3/draft-enhance" \ -H "Authorization: Key YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "input": { "draft_cache_url": "", "safety_tolerance": 2, "prompt": "Enhance the draft cache to full FLUX 3 quality, richer lighting and detail", "duration": 5, "video_url": "https://assets.apisale.ai/permanent/official/google/veo-3.1/example-veo31-t2v-v2.mp4", "resolution": "720p" } }' ``` ## Related * [Runs lifecycle](/model-apis/runs-lifecycle) * [Video API overview](/api/video) * [Account API](/get-started/account-and-monitoring) ## OpenAPI ````yaml openapi-catalog.json POST /v1/run/blackforestlabs/flux-3/draft-enhance openapi: 3.0.3 info: title: apisale Model Catalog version: '2026-09-01T09:47:50.773Z' description: Per-model OpenAPI operations for Mintlify Try playground. servers: - url: https://api.apisale.ai security: [] paths: /v1/run/blackforestlabs/flux-3/draft-enhance: post: tags: - Model catalog - video - Blackforestlabs summary: Create FLUX 3 — Draft Enhance description: >- Black Forest Labs FLUX 3 — first BFL video model, up to 20s with audio; text / image / first-last / keyframes / extend, plus Draft. Optimized for draft enhance via apisale. operationId: submit-blackforestlabs-flux-3-draft-enhance requestBody: required: true content: application/json: schema: type: object required: - input properties: input: type: object properties: draft_cache_url: description: >- URL of the encrypted draft cache bundle returned by a flux-3 draft endpoint. type: string safety_tolerance: description: 0 is the strictest, 4 the most permissive. type: number minimum: 0 maximum: 4 default: 2 required: - draft_cache_url example: draft_cache_url: '' safety_tolerance: 2 prompt: >- Enhance the draft cache to full FLUX 3 quality, richer lighting and detail duration: 5 video_url: >- https://assets.apisale.ai/permanent/official/google/veo-3.1/example-veo31-t2v-v2.mp4 resolution: 720p webhook_url: type: string format: uri sync: type: boolean default: false example: input: draft_cache_url: '' safety_tolerance: 2 prompt: >- Enhance the draft cache to full FLUX 3 quality, richer lighting and detail duration: 5 video_url: >- https://assets.apisale.ai/permanent/official/google/veo-3.1/example-veo31-t2v-v2.mp4 resolution: 720p responses: '201': description: Run accepted content: application/json: schema: $ref: '#/components/schemas/RunObject' security: - ApiKeyAuth: [] components: schemas: RunObject: type: object required: - run_id - endpoint - model - capability - mode - status - created_at properties: run_id: type: string description: Unique run identifier endpoint: type: string description: Model slug model: type: string capability: type: string mode: type: string status: type: string enum: - queued - processing - succeeded - failed - timeout - cancelled output: type: object nullable: true error: type: object nullable: true properties: type: type: string description: Machine-readable error code code: type: number description: HTTP status message: type: string billing: type: object nullable: true properties: amount: type: string currency: type: string enum: - usd created_at: type: string format: date-time started_at: type: string format: date-time nullable: true completed_at: type: string format: date-time nullable: true elapsed_ms: type: number nullable: true securitySchemes: ApiKeyAuth: type: apiKey in: header name: Authorization description: Key sk-... (native REST) or Bearer sk-... (vendor SDKs) ````