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FLUX 3 Max Text To Video: Prompt-Driven 720p and 1080p Clips on Models and API | RunComfy

blackforestlabs/flux-3-max/text-to-video

FLUX 3 Max Text To Video creates a clip from a text prompt alone, with optional audio at 720p or 1080p.

Describe the subject, action, camera, light, and any sound you want.
Output frame shape. auto uses 16:9 when no image is attached.
Output resolution. 720p is the default. 1080p is the sharper option.
Clip length in whole seconds.
Create an audio track with the video. Turn this off for a silent clip.
low returns sooner. high spends more time on the prompt and is slower.
Optional. Leave empty and the model picks a random seed.
Idle
The rate is $0.05 per second at 720p, and $0.08 per second at 1080p.

Introduction To FLUX 3 Max Text To Video

Black Forest Labs' FLUX 3 Max Text To Video turns a written prompt into a 5-20 second clip at 720p or 1080p with optional audio.
Trading timeline edits for prompt-led motion, FLUX 3 Max Text To Video helps marketers, agencies, and previz artists draft shots faster.
For developers, FLUX 3 Max Text To Video on RunComfy can be used both in the browser and via an HTTP API, so you don't need to host or scale the model yourself.
Ideal for: Ad Scene Drafts | Establishing Shots | Short Narrative Beats

Parameters#


Only the prompt is required. FLUX 3 Max Text To Video invents the shot from that text. There is no start image on this page, and auto aspect ratio uses 16:9.


ParameterRequiredTypeDefaultRange / OptionsDescription
prompt*Yes (*)string—TextSubject, action, camera, light, and sound for FLUX 3 Max Text To Video.
aspect_ratioNostringautoauto, 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, 9:16auto uses 16:9 on this text-only page.
resolutionNostring720p720p, 1080pOutput resolution for FLUX 3 Max Text To Video.
durationNointeger55-20Length in seconds.
generate_audioNobooleantruetrue, falseCreate an audio track with the video.
reasoning_levelNostringhighlow, highhigh spends longer on the prompt for FLUX 3 Max Text To Video.
seedNointegerEmptyInteger or emptyEmpty means a random seed.

Pricing#


The rate is $0.05 per second at 720p and $0.08 per second at 1080p. FLUX 3 Max Text To Video bills the generated clip length.


ResolutionRate
720p$0.05 per second
1080p$0.08 per second

Duration720p1080p
5 s$0.25$0.40
10 s$0.50$0.80
20 s$1.00$1.60

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Frequently Asked Questions

What is FLUX 3 Max Text To Video used for?

FLUX 3 Max Text To Video turns a written prompt into a short clip when you do not have a start image. It fits ad drafts, establishing shots, and short narrative beats.

How long can a FLUX 3 Max Text To Video clip be?

FLUX 3 Max Text To Video uses a whole-second length from 5 to 20. The default is 5 seconds. There is no auto-length option on this page.

What resolution and framing does FLUX 3 Max Text To Video offer?

FLUX 3 Max Text To Video outputs 720p by default or 1080p. Aspect ratio can be auto, 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, or 9:16. auto uses 16:9 on this text-only page.

Does FLUX 3 Max Text To Video include audio?

Yes. Generate Audio is on by default, so FLUX 3 Max Text To Video can return a soundtrack with the picture. Turn it off when you need a silent file.

What does reasoning level change in FLUX 3 Max Text To Video?

FLUX 3 Max Text To Video offers low and high. high is the default and spends more time on the prompt, so the wait is longer. Use low when you want a faster pass.

What should a FLUX 3 Max Text To Video prompt include?

Name one camera move, the action in order, a small bit of secondary motion, and the sounds you want. FLUX 3 Max Text To Video has no start image, so the prompt has to carry the subject and the setting.

Can I repeat a FLUX 3 Max Text To Video result?

Set seed when you want a closer repeat from FLUX 3 Max Text To Video. Leave seed empty and the model picks a random value.

How do I move FLUX 3 Max Text To Video from a trial to the API?

Prototype FLUX 3 Max Text To Video in the RunComfy Playground Web UI, then call the same model through the RunComfy API with the same prompt, duration, resolution, and other fields. Jobs spend usd or credits. New accounts usually start with a trial balance.

How much does FLUX 3 Max Text To Video cost on RunComfy?

FLUX 3 Max Text To Video costs $0.05 per second at 720p and $0.08 per second at 1080p, based on the generated clip length. A 5-second 720p clip is $0.25. A 20-second 1080p clip is $1.60.

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Examples Of FLUX 3 Max Text To Video

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