FLUX
Black Forest Labs
FLUX is an image generation model line from Black Forest Labs. The latest release is FLUX 3 Image Klein (15 Oct 2026). This page tracks all 9 FLUX releases since 1 Aug 2024, with specs, licensing, and how to access each one. Official site →
FLUX 3 Image Kleinreleased
First FLUX 3 model; 38% fewer parameters than predecessor; first FLUX 3 to support multi-reference generation (up to 10 reference images); native 4K output; pixel-precise editing; 8 GB VRAM minimum
- Availability
- Community API, Self-host
- Parameters
- 5.6B
- Resolution
- 4K native
- Architecture
- flow-matching transformer
Story f633d0b9 and story 677de6e6 and story d17f680d all cover the same release (FLUX 3 Image Klein). Using the BFL blog URL as announcement_url. Hugging Face Diffusers integration covered in d17f680d is a tooling story, not a separate release.
FLUX 3released
Black Forest Labs' first video model and first unified multimodal model: one flow architecture trained jointly on images, video and audio, extendable to robot-action prediction (FLUX-mimic, in testing at Audi). Clips up to 20s with synchronised audio. FLUX 3 Video and FLUX 3 Action shipped in early access; FLUX 3 Image, faster variants and open weights announced to follow
- License
- Proprietary
- Commercial use
- Allowed
- Availability
- Official API, Community API
- Audio
- native synchronised audio
- Max duration
- 20s
Early access 2026-07-23; FLUX 3 Video generally available 2026-08-05 (BFL claims it beats Seedance 2.0). weights: closed at seeding - BFL has promised open-weight versions later in 2026; flip when a checkpoint lands. Multimodal so it appears on both timelines.
FLUX.2released
New generation with unified generation and editing and multi-image input; variants Pro/Flex (closed), Dev (32B open), Klein (Apache 2.0 open)
- License
- Proprietary (Pro/Flex); open weights for Dev (32B) and Klein (Apache 2.0)
- Availability
- Official API, Community API, Self-host, Consumer app
FLUX.1 Krea [dev]released
Anti AI-look photorealism; distilled from Krea 1 (BFL and Krea); open weights for non-commercial use
- License
- FLUX.1 Dev Non-Commercial License
- Commercial use
- Restricted
- Availability
- Self-host, Community API
FLUX.1 Kontextreleased
In-context image editing with character and style consistency; Pro and Max closed API, Kontext [dev] open-weight (non-commercial) followed
- License
- Proprietary (Pro/Max); FLUX.1 Dev Non-Commercial (Kontext [dev])
- Availability
- Official API, Community API, Self-host, Consumer app
FLUX 1.1 [pro]released
6x faster than FLUX.1 [pro]; improved image quality and prompt following
- License
- Proprietary
- Commercial use
- Allowed
- Availability
- Official API, Community API
FLUX.1 [pro]released
Top-tier quality closed API; outperformed MJ v6 and SD3 on launch benchmarks
- License
- Proprietary
- Commercial use
- Allowed
- Availability
- Official API, Community API
FLUX.1 [schnell]released
Fastest variant; Apache 2.0 - fully open for commercial use; 4-step generation
- License
- Apache 2.0
- Commercial use
- Allowed
- Availability
- Self-host, Community API
- Steps
- 1-4
- Parameters
- 12B
FLUX.1 [dev]released
Open weights, non-commercial; distilled from [pro] with guidance distillation
- License
- FLUX-dev Non-Commercial License
- Commercial use
- Restricted
- Availability
- Self-host, Community API
- Parameters
- 12B
FAQ
- When was FLUX 3 Image Klein released?
- FLUX 3 Image Klein was released on 15 Oct 2026.
- Is FLUX open source?
- Yes. FLUX 3 Image Klein ships open weights.
- Where can I use FLUX?
- FLUX 3 Image Klein is available via Community API and Self-host.
See FLUX in context on the image model timeline, or browse all model families.