How does audio work in FLUX 3 video generation?

Audio is generated and synchronized with the video frames by default. It includes multilingual speech, sound effects, and ambient noise. There is no extra charge for audio generation.

Can I use FLUX models for commercial projects?

Yes. The API has a pay-as-you-go commercial model. For self-hosted open weights, commercial use requires purchasing a license (Builder, Platform, Professional, or Enterprise tiers), each with specific volume and domain limits.

What is the FLUX MCP server and how do I use it?

The FLUX Model Context Protocol (MCP) server allows you to integrate FLUX's image and video generation capabilities directly into AI coding agents like Claude Code, Cursor, and VS Code. You add it as a remote server and authenticate with your BFL account via OAuth.

How are video generation costs calculated?

Costs are based on the resolution band (HD, FHD, QHD/2K, UHD/4K) and the model mode (Text/Image-to-Video vs. Video-to-Video). Prices are per second of output video, rounded up to the next whole second.

What are the technical limits of the FLUX 3 multimodal model?

It generates up to 20-second video clips in a single pass. It unifies perception and generation across modalities, meaning it can take a video input and produce an output conditioned on it (Video-to-Video), which includes editing or restyling.

Directory/Video Generation/AI Video Generation/FLUX

FLUX

FLUX is a suite of multimodal AI models from Black Forest Labs for generating and editing images and video with synchronized audio. The latest FLUX 3 model supports text-to-video, image-to-video, and video-to-video generation with native audio and up to 20-second clips. It offers state-of-the-art quality for diverse styles, accurate text rendering, and complex prompts. Target users include creative professionals, developers, and enterprises needing high-quality visual AI generation via API, open weights, or a playground.

Video Generation

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Sep 21, 2026

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Multimodal generationText-to-videoImage-to-videoVideo upscalingAPI & PlaygroundOpen WeightsCredit billing

Product information

Everything worth knowing about FLUX

The complete picture — from everyday features to the technical detail builders and IT folks dig for.

Core features

What it actually does

Multimodal Generation (Image, Video, Audio)

A single model (FLUX 3) generates images, videos, and synchronized audio from text, images, or keyframes.

Video Generation & Upscaling

Create video from text/image or edit existing video, with output resolutions from HD to 4K (UHD).

Playground & API Access

Experiment instantly in a browser-based playground or integrate via a simple, scalable API for production.

Open Weights & Self-Hosting

Download model weights to deploy on your own infrastructure for full control over fine-tuning and deployment.

Model Suite & Versioning

Access a range of models (FLUX 3, FLUX.2 Max, FLUX.2, FLUX.2 Klein, FLUX Tools) for different quality/cost tradeoffs.

Technical capabilities

Flow-Based Diffusion Architecture

Utilizes a state-of-the-art flow-based generative model architecture for high-fidelity visual synthesis.

Credit-Based API Pricing

Pricing is per second of video output or per generation, with rates varying by model, mode, and resolution band.

Must watch videos

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Tutorial1:00

Introducing FLUX 3

FLUX 3 Video is here. Serious, fun, creative, real, cinematic, whatever you need it to be. FLUX 3 understands how things move, sound, and interact. Capabilities: - Text to video, from simple to complex prompts - Image to video with start frames, end frames, or multiple key frames in order - Video continuation - Native audio: effects, ambience, accurate speech in multiple languages, strong lipsync - Text that feels native to the scene - Up to 20 seconds, 1080p native (2K and 4K shipping soon) Draft mode to explore creative directions fast at a fraction of the cost. A draft generation returns a fast preview of your prompt. When a draft is right, send it back and FLUX 3 will render the same video at full quality (retains the subjects, composition, movement). Available in the API and in your favorite tools. 2K, 4K, and Open Weights coming soon. Try it: https://bfl.ai/models/flux-3?utm_source=youtube&utm_medium=social&utm_campaign=flux3_launch&utm_content=explainer_video

FLUX 3 x mimic: The Next Generation of Video-Action Models

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Tutorial3:50

FLUX 3 x mimic: The Next Generation of Video-Action Models

FLUX 3 for robotics and the physical world. An early version of FLUX 3, our new frontier multimodal model, is now running on robots. We gave mimic robotics early access to FLUX.3. Their strength in robot learning and deployment, combined with the model's world knowledge and BFL's foundation model expertise, produced FLUX-mimic: the next generation of video-action models. Learn more https://bfl.ai/blog/flux-3-mimic

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Tutorial0:46

FLUX 3 Sneak Peek

Introducing FLUX 3. One multi-modal model for Image, Video, Audio and Action-Prediction. Creations are truer to life in every kind of style. FLUX 3 is a checkpoint on our mission to develop real-world visual intelligence: models that perceive, predict, and act across digital and physical environments. Jointly trained in one unified architecture, our model can be extended to predict actions for robotics. Learn more https://bfl.ai/models/flux-3?utm_source=youtube&utm_medium=social&utm_campaign=flux3_launch

Who uses it

Real use cases, no hype

High-Resolution Video Production

Generate cinematic or stylized video clips up to 4K resolution from text or image prompts for marketing, social media, or creative projects.

AI Agent Content Creation

Integrate directly into coding agents like Claude or Cursor to programmatically generate and edit visual media via natural language prompts.

Video Enhancement & Editing

Use specialized tools for upscaling to 2K/4K, deblurring, erasing objects, outpainting, and applying style transfer to existing video.

Rapid Prototyping & Ideation

Utilize the low-cost 'Draft' mode and browser playground to quickly test concepts and iterate on video ideas without significant cost.

Self-Hosted AI Infrastructure

Deploy FLUX.2 models on private infrastructure for complete control, customization, and potential cost savings at scale, avoiding API rate limits.

Multimodal Content Generation

Create synchronized audio (speech, effects, ambience) alongside video, or generate images and perform complex edits in a single model pipeline.

Synthetic Data Creation

Generate high-quality, diverse image datasets for AI training purposes under specific commercial licensing terms.

What's great

State-of-the-art video generation up to 4K/20s with native audio
Multimodal model handles text, images, and video in a single architecture
Extensive style diversity: cinematic, anime, comedy, stop-motion, etc.
Direct integration with major AI coding agents (Claude, Cursor, VS Code)

Technical strengths

Flexible deployment via API, playground, or self-hosted open weights
Dedicated MCP server for standardized tool access in AI agents
Fine-tuning rights for FLUX.2 models under commercial licenses

Where it falls short

Usage-based pricing can get expensive for high-volume video generation
Limited to 20-second maximum clip length per generation
Open weights licensing has domain and usage caps depending on tier
Draft mode (HD only) produces lower quality for rapid iteration

Technical limitations

Resolution-based pricing bands can make cost prediction less straightforward
FLUX 3 Video Draft mode lacks higher resolution options (FHD, QHD, UHD)
API requires OAuth with a BFL account; no simple API key authentication

For technical folks

The deep-dive specs

FAQ

Includes technical Q&A

Video Draft is a lower-cost, lower-latency option for rapid exploration, but is limited to HD resolution. The standard FLUX 3 Video mode balances quality, cost, and latency and supports all resolutions up to 4K.