FLUX 3 Text to Video: AI Video Generator
Generate cinematic video with native synchronized audio using FLUX 3 Text to Video by Black Forest Labs. Try free — pay per generation, no subscription.
Generate cinematic video with native synchronized audio using FLUX 3 Text to Video by Black Forest Labs. Try free — pay per generation, no subscription.
About this model
FLUX 3 Text-to-Video generates cinematic video clips — with optional native, synchronized audio — directly from a text prompt, using Black Forest Labs' unified image/video/audio architecture. FLUX 3 Video shares its core architecture with FLUX 3 Action, the same model family's action-prediction research, giving it stronger real-world physics and motion coherence than earlier video generators. Combine it with FLUX 3 Image to Video or FLUX 3 Video Extend for longer, multi-shot sequences, or compare it against Seedance 2 and Veo 3.
Cost analysis
| Provider | Cost | Notes |
|---|---|---|
| muapiapp | $0.25/sec (720p), $0.42/sec (1080p) | Pay-per-generation pricing, no subscription required. Audio generation included at no extra charge. |
| Fal.ai | Not available | FLUX 3 Video is not yet listed on Fal.ai. |
| Replicate | Not available | FLUX 3 Video is not yet listed on Replicate. |
Pay-per-generation pricing, no subscription required. Audio generation included at no extra charge.
FLUX 3 Video is not yet listed on Fal.ai.
FLUX 3 Video is not yet listed on Replicate.
** Competitor pricing is estimated based on similar model architectures and usage tiers.
Configuration schema
| Parameter | Type | Description | Default |
|---|---|---|---|
| Prompt | string | Text prompt describing the video scene and motion. | A drone shot glides over a bioluminescent forest at night, fireflies drifting between glowing trees, gentle mist rolling across the forest floor, cinematic color grading. |
| Aspect Ratio | Enum (6 options) | Aspect ratio of the output video. | 16:9 |
| Duration | int | Video duration in seconds. | 5 |
| Resolution | Enum (2 options) | Output video resolution. | 720p |
| Generate Audio | boolean | Whether to generate synchronized native audio for the video. | true |
Text prompt describing the video scene and motion.
A drone shot glides over a bioluminescent forest at night, fireflies drifting between glowing trees, gentle mist rolling across the forest floor, cinematic color grading.Aspect ratio of the output video.
16:9Video duration in seconds.
5Output video resolution.
720pWhether to generate synchronized native audio for the video.
trueDeveloper documentation
Write a scene-driven prompt — describe subject, action, environment, camera movement, timing, mood, lighting, and visual style.
Configure output — set aspect_ratio (21:9 to 9:16), resolution (720p or 1080p), and duration (5–20 seconds).
Toggle generate_audio to generate synchronized native audio at no extra charge.
Submit the request:
curl -X POST https://api.muapi.ai/api/v1/flux-3-text-to-video \
-H "x-api-key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"prompt": "A drone shot glides over a bioluminescent forest at night, fireflies drifting between glowing trees", "aspect_ratio": "16:9", "resolution": "1080p", "duration": 10, "generate_audio": true}'
/api/v1/predictions/{request_id}/result until status reaches completed, then read the video URL from outputs.Frequently asked
It's Black Forest Labs' text-to-video mode within the FLUX 3 family, generating cinematic clips with optional native synchronized audio from a single unified multimodal model.
Yes. FLUX 3 Video supports native audio generation synchronized to the video, controlled via the `generate_audio` parameter, at no extra charge.
720p and 1080p resolution, with durations from 5 to 20 seconds. Duration is billed rounded up to the next whole second.
Both share the same underlying architecture. FLUX 3 Video is tuned for creative video generation, while FLUX 3 Action extends the same physical-world understanding to action/robotics prediction.
Muapi bills $0.25/second at 720p and $0.42/second at 1080p, rounded up to the next whole second, capped at 20 seconds. A 10-second 720p clip costs $2.50.
Yes — use [FLUX 3 Video Extend](/playground/flux-3-video-extend) to continue a clip with new prompt-guided motion, or [FLUX 3 Video Upscaler](/playground/flux-3-video-upscaler) to raise resolution beyond the native 720p/1080p output.