FLUX 3 API — Video, Image & Audio API by Black Forest Labs
Coming Soon5 variantsFLUX 3 is Black Forest Labs' newly announced multimodal frontier model — jointly trained across image, video, and audio within a unified architecture, and extendable to action prediction. Muapi is preparing 5 FLUX 3 endpoints, including a FLUX 3 video API for text-to-video and image-to-video generation with native synchronized audio, alongside text-to-image, image editing, and a faster Dev variant. Sign up now to get access the moment each endpoint goes live.
FLUX 3 Text to Image
Flagship text-to-image mode of FLUX 3, Black Forest Labs' new unified multimodal frontier model. Sharper detail and stronger prompt adherence than FLUX.2.
FLUX 3 Image to Image
Instruction-driven image editing with up to 4 reference images. The successor to FLUX Kontext, built on FLUX 3's unified architecture.
FLUX 3 Dev
Faster, lower-cost FLUX 3 variant with a planned open-weight release later in 2026 — ideal for rapid iteration and high-volume generation.
FLUX 3 Text to Video
Cinematic text-to-video with optional native synchronized audio, sharing FLUX 3's physically grounded motion architecture with FLUX 3 Action.
FLUX 3 Image to Video
Animate a still image into cinematic video with optional native audio, keeping motion physically consistent with the source frame.
What is FLUX 3?
FLUX 3 is Black Forest Labs' newest frontier model, announced in July 2026 as a unified multimodal system jointly trained across image, video, and audio data — and extendable to action prediction for robotics. Unlike earlier FLUX generations that focused solely on still images, FLUX 3 shares one architecture (built on Black Forest Labs' Self-Flow approach) across FLUX 3 Image, FLUX 3 Video, and FLUX 3 Action, giving it a stronger grasp of real-world physics, lighting, and motion than prior models like FLUX Kontext or FLUX.2 Pro.
Black Forest Labs is rolling out FLUX 3 in phases: FLUX 3 Video and FLUX 3 Action entered early access with launch partners including Canva, Burda, Magnific, Krea, and Picsart, while FLUX 3 Image is rolling out in the following weeks. Faster, open-weight versions are planned later in 2026. Muapi is tracking each release and will activate the corresponding text-to-image, image-edit, and video endpoints as soon as general API access opens — no separate signup needed if you already have a Muapi API key.
Key Capabilities
Unified Image, Video & Audio
One architecture jointly trained across image, video, and audio data — the same model family that also extends to action prediction for robotics.
Native Synchronized Audio
FLUX 3 Video generates scene-appropriate ambient audio synchronized to the clip, with no separate TTS or audio-sync step required.
Physically Grounded Motion
Motion stays consistent with real-world physics — objects move the way they would in reality, rather than drifting or warping.
Instruction-Driven Editing
FLUX 3 Image-to-Image accepts up to 4 reference images plus a text instruction for precise, identity-preserving edits.
Faster Dev Variant
FLUX 3 Dev trades a small amount of peak fidelity for lower latency and cost, with a planned open-weight release later in 2026.
Up to 4K Resolution
FLUX 3 Image is expected to support resolutions up to 4K, continuing the trend set by the FLUX.2 generation.
FLUX 3 Variants Coming to Muapi
| Variant | Modality | Resolution | Best For |
|---|---|---|---|
| FLUX 3 Text to Image | Image | Up to 4K | Flagship photorealistic image generation |
| FLUX 3 Image to Image | Image Edit | Up to 4K | Instruction-driven editing with reference images |
| FLUX 3 Dev | Image | Up to 4K | Fast, low-cost iteration; planned open-weight release |
| FLUX 3 Text to Video | Video + Audio | 480p – 1080p | Cinematic video with native synchronized audio |
| FLUX 3 Image to Video | Video + Audio | 480p – 1080p | Animate a still image with physically consistent motion |
FLUX 3 Video API
The FLUX 3 video API covers both FLUX 3 Text to Video and FLUX 3 Image to Video, generating 480p–1080p cinematic clips with optional native synchronized audio — no separate TTS or audio-sync step required. Both endpoints share FLUX 3's physically grounded motion architecture, the same foundation used by FLUX 3 Action, so motion, lighting, and physics stay consistent whether you're generating from a text prompt or animating a still image. Muapi will activate the FLUX 3 video API as soon as Black Forest Labs opens general access.
Frequently Asked Questions
What is FLUX 3?
FLUX 3 is Black Forest Labs' new multimodal frontier model, announced in July 2026. It is jointly trained across image, video, and audio within a unified architecture, and extends to action prediction for robotics.
Is the FLUX 3 API available right now?
FLUX 3 Video and Action entered early access on announcement day, with FLUX 3 Image rolling out in the following weeks. Muapi is preparing 5 endpoints and will enable each one as Black Forest Labs opens general availability.
What FLUX 3 variants will Muapi offer?
Five planned endpoints: FLUX 3 Text to Image, FLUX 3 Image to Image, FLUX 3 Dev (faster/lower-cost), FLUX 3 Text to Video, and FLUX 3 Image to Video — the last two with optional native synchronized audio.
How is FLUX 3 different from FLUX.2 and FLUX Kontext?
FLUX.2 and FLUX Kontext are image-only models. FLUX 3 unifies image, video, and audio generation in one architecture, giving it stronger real-world coherence and the ability to generate native synchronized audio alongside video.
Will FLUX 3 have an open-weight release?
Yes. Black Forest Labs has confirmed that faster, open-weight versions of FLUX 3 will follow later in 2026, continuing the same open-access approach as FLUX.1 and FLUX.2. In the meantime, FLUX Kontext is available today on Muapi.
How do I get early access to FLUX 3 through Muapi?
Create a free account and generate an API key today. Each FLUX 3 endpoint listed above will activate automatically for existing Muapi users as soon as Black Forest Labs opens general API availability — no separate waitlist required.