Flux 3 Video Limits: Duration, Resolution, and Rate Caps
What's confirmed, what isn't, and how to plan a production workflow around Flux 3 Video's limits.
Black Forest Labs launched Flux 3 Video on July 23, 2026 as a multimodal model generating video, audio, and images from text, image, or keyframe input. Clips run up to 20 seconds per generation with native audio, and BFL publishes per-second API rates on its pricing docs. Output covers 720p through 2160p, though frame-rate, file-size, and API rate-limit specifics remain unpublished.
If you're planning a production video-generation workflow — a marketing pipeline, a training-content system — you need those numbers before you scope the job, not after a run fails against an undocumented ceiling. This guide covers what's confirmed and how to get the rest directly from the vendor.
Clip Length: 20 Seconds, Confirmed
Flux 3 Video generates clips up to 20 seconds per generation, with native audio included in the same output. This is the one limit Black Forest Labs states explicitly in the launch material. For longer sequences, you'll need to chain multiple generations — the launch material doesn't describe a built-in stitching or continuation feature for exceeding the 20-second cap.
Resolution, Frame Rate, and File Format
While frame rate and supported export formats are not detailed, Black Forest Labs publishes output resolutions for 720p, 1080p, 1440p, and 2160p. Full HD (1080p) output comes via upscaling, while 1440p and 2160p classes are finished by the video upsampler.
Confirm current specs directly in the Black Forest Labs playground or API documentation before committing to a production pipeline; test a sample generation at your target resolution first.
API Rate Limits and Concurrent Generations
Requests-per-minute, concurrent-generation caps, and any queue-priority tiers are not published for the Flux 3 Video API. Black Forest Labs publishes exact per-second API rates paid in credits (1 credit = $0.01), ranging from $0.06 for draft mode to $0.41 for 2160p.
Self-Hosting and Private Weight Access
There are no open weights for FLUX 3 Video, and self-hosting is not publicly available. Companies seeking private weight access must arrange terms with Black Forest Labs sales, as no self-hosting specifications or prices are published.
- Public self-hosting is not available; private weight access requires contacting BFL sales
- No specific minimum hardware spec published — test at your target output volume
- No self-hosting pricing, terms, or hardware specifications are published
Frequently Asked Questions
- Up to 20 seconds per generation, with native audio included — this is the one limit Black Forest Labs states explicitly in the launch material.
- Black Forest Labs supports 720p, 1080p, 1440p, and 2160p output classes. Full HD (1080p) comes via upscaling, and 1440p and 2160p are finished by the video upsampler.
- No specific requests-per-minute or concurrent-generation caps are published. Confirm current limits directly with Black Forest Labs before building a workflow with a throughput SLA.
- No. There are no open weights for Flux 3 Video, and self-hosting is not publicly available. Organizations seeking weights must arrange private access with Black Forest Labs sales.
Scoping a Video-Generation Workflow?
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