FLUX.2 [klein] 4B
FLUX.2 Klein 4B is a 4B rectified-flow image model for generation and reference editing. It is step-distilled for a four-step generation process.
Model details
The model handles text-to-image generation and multi-reference editing in one pipeline. The weights run through BFL's reference code, Diffusers or ComfyUI. Hosted API access has separate service terms from the downloadable weight license.FLUX.2 [klein] 4B official documentation
Practical use
Practical guidance. Use Klein 4B for a local editing loop where turnaround matters. Measure actual latency with the text encoder and decoder loaded. Compare fine text and repeated subjects against a larger model before adopting the smaller checkpoint for final assets.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Access | API, Downloadable, Provider product |
| Model identifiers | black-forest-labs/FLUX.2-klein-4Bflux-2-klein-4b |
| Weight license | Apache 2.0FLUX.2 [klein] 4B official documentation |
| Sampling | Four inference steps.FLUX.2 [klein] 4B official documentation |
Related models
- FLUX.2 [klein] Base 4B
Black Forest Labs ยท FLUX.2
Undistilled four-billion-parameter image model for generation, reference editing and fine-tuning.
Launch date not confirmedDownloadable