{"version":"1","model":{"id":"blackforestlabs/flux-3/first-last-frame-to-video/draft","name":"FLUX.3 Draft First + Last","kind":"video","availability":"available","available":true,"restricted":false,"api_key_only":false,"description":"Preview the exact motion between required opening and closing images, then enhance the approved draft without changing its composition.","pricing_note":"$0.03 per generated draft second; includes a reusable encrypted Draft Enhance cache.","categories":["i2v"],"prompt_required":true,"prompt_supported":true,"input_fields":["prompt","start_image_url","end_image_url","generate_audio","aspect_ratio","safety_tolerance","duration"],"supports":{"startImage":true,"endImage":true,"audioGeneration":true},"requires":{"startImage":true,"endImage":true},"aspect_ratios":["auto","21:9","2:1","16:9","4:3","1:1","3:4","9:16"],"resolutions":[],"durations":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20],"fixed_output":{"frame_rate":24},"accepted_formats":{"image":["png","jpg","jpeg","webp"]},"base_credits":19,"api_gross_margin_percent":20,"added_at":"2026-08-04","popularity_rank":416,"example_prompt":"Connect the opening and closing frame with one continuous, physically coherent camera move and consistent subject motion","preview":{"image":"/images/model-previews/flux-3-draft-first-last-gpt-image-2.webp"},"schema_url":"/api/v1/models?id=blackforestlabs%2Fflux-3%2Ffirst-last-frame-to-video%2Fdraft","input_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","$id":"https://www.artemotion.ai/api/v1/models?id=blackforestlabs%2Fflux-3%2Ffirst-last-frame-to-video%2Fdraft","title":"FLUX.3 Draft First + Last generation request","description":"Request body accepted by POST /api/v1/generate for blackforestlabs/flux-3/first-last-frame-to-video/draft.","type":"object","properties":{"model_id":{"type":"string","const":"blackforestlabs/flux-3/first-last-frame-to-video/draft","description":"ArtEmotion model identifier."},"extra":{"type":"object","additionalProperties":true,"description":"Model-specific settings may also be nested here."},"max_credits":{"type":"number","minimum":1,"description":"Reject before submission if the estimated list price exceeds this cap."},"webhook_url":{"type":"string","format":"uri","maxLength":2048},"webhook_secret":{"type":"string","maxLength":512},"folder_id":{"type":"string"},"prompt":{"type":"string"},"start_image_url":{"type":"string","format":"uri"},"end_image_url":{"type":"string","format":"uri"},"generate_audio":{"title":"Generate audio","description":"Generate synchronized dialogue, ambience, and sound effects with the video.","default":true,"type":"boolean"},"aspect_ratio":{"type":"string","enum":["auto","21:9","2:1","16:9","4:3","1:1","3:4","9:16"]},"safety_tolerance":{"title":"Safety tolerance","description":"Provider safety level. 0 is strictest; ArtEmotion keeps the provider default of 2.","default":2,"type":"number","enum":[0,1,2,3,4]},"duration":{"type":"number","enum":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20]}},"required":["model_id","prompt","start_image_url","end_image_url"],"additionalProperties":false},"parameters":[{"key":"generate_audio","label":"Generate audio","type":"toggle","default":true,"description":"Generate synchronized dialogue, ambience, and sound effects with the video."},{"key":"safety_tolerance","label":"Safety tolerance","type":"select","default":2,"options":["0","1","2","3","4"],"description":"Provider safety level. 0 is strictest; ArtEmotion keeps the provider default of 2."}]}}