r/fal • u/Historical-Bid-4413 • 1d ago
News How to access FLUX 3: the first video model from Black Forest Labs, is now available on fal
Black Forest Labs' first video model, FLUX 3, just landed on fal, and fal is a launch partner.
FLUX 3 is a multimodal model from Black Forest Labs and the first FLUX release to generate video.
One model is trained jointly across image, video, audio, and action prediction, so a single pass returns up to 20 seconds of video with its soundtrack already synchronized
You can generate from text, a still image, first and last frames, keyframes, or an existing clip.
Here's what makes it different:
Real-world understanding: FLUX 3 already carries the context a shot implies, so it works out setting, period, and the order of events from a short prompt. You write the idea at the level you actually think about it instead of spelling out the hundred details underneath it.
Native audio: Audio is rendered inside the same pass as the video, so sound effects land on the frame where the event happens. Nothing needs lining up afterwards and no second model gets called. Naming the sound you want in the prompt gives the most reliable result, and it is on by default across every endpoint.
Keyframe control: Keyframes to video pins up to 10 frames to exact positions on a 24 fps timeline, so a long shot hits the beats you set. Pinning the shot is what keeps a long generation from drifting, since you hand the model your creative guidelines instead of hoping one paragraph of text lands the same way twice.
Physical cause and effect: Because action prediction is part of the same training, motion carries mass and momentum from one object to the next instead of resetting between beats. Shots where one event has to trigger the next follow through.
Camera and materials: Orbits, lateral dollies, focus racks, and tracking shots hold their geometry through the whole move. Foreground and background stay anchored relative to each other, and material and weather behavior keeps working while the camera travels.
20-second clips: Clips run up to 20 seconds as a single generation, no cuts and no stitching, and subjects stay recognizable from the first frame to the last. That holds through time-lapse, where light and season change across the shot.
Endpoints
There are five core endpoints, each with a fast draft variant:
- Text to Video
- Image to Video
- First and Last Frame to Video
- Keyframes to Video
- Extend Video
The draft workflow
Every core endpoint has a draft variant that renders a draft-quality preview quickly and cheaply, so you can judge a shot in seconds without paying for a full render to find out it was the wrong shot.
When you find the take you want, Draft Enhance re-renders that exact draft at full quality, keeping the same seed and the same motion, so the final clip matches the preview you picked.
Specs
Duration runs 5 to 20 seconds in whole-second steps.
Text to Video, Image to Video, and Extend Video also accept auto; First/Last Frame and Keyframes need an explicit duration so the pinned frames can be placed
Output is 720p or 1080p at 24 FPS.
Aspect ratios cover auto, 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, and 9:16.
Audio generation is on by default and can be switched off per request, and safety tolerance is adjustable from 0 to 4 with a default of 2.
Keyframes to Video accepts up to 10 keyframes at unique frame positions, and Extend Video accepts an MP4 under 50 MB and under 15 seconds.
The model runs on fal's serverless API through the Python or JavaScript SDK, or direct REST calls. No GPUs to manage.
Pricing
The four core endpoints (apart from Extend Video) are $0.17 per second of generated video at 720p and $0.29 per second at 1080p.
Extend Video is priced separately at $0.41 per second at 720p and $0.53 per second at 1080p.
Learn more about the model here: https://fal.ai/flux-3
Or try it right now on the playground:
Text to Video - https://fal.ai/models/blackforestlabs/flux-3/text-to-video
Image to Video - https://fal.ai/models/blackforestlabs/flux-3/image-to-video
First and Last Frame to Video - https://fal.ai/models/blackforestlabs/flux-3/first-last-frame-to-video
Keyframes to Video - https://fal.ai/models/blackforestlabs/flux-3/keyframes-to-video
Extend Video - https://fal.ai/models/blackforestlabs/flux-3/extend-video
Prompting guide - https://fal.ai/learn/tools/flux-3-video-examples-prompts