Black Forest Labs open-sources FLUX 3 Image Klein
10/16/2026 — 10/16, 03:22·2 sources (all)·3 reports (all)
Key takeaways
- Black Forest Labs released FLUX 3 Image Klein, an open-weight image model with 5.6B parameters that supports native 4K generation, pixel-lev…
Background & analysis
On October 16, 2026, The Decoder reported that Black Forest Labs released FLUX 3 Image Klein, an open-weights image model. The model has 5.6 billion parameters and supports native 4K generation, pixel-precise editing, and generation with up to ten reference images. It also accepts bounding boxes for placing elements within an image.
According to the report, FLUX 3 Image Klein uses 38 percent fewer parameters than its predecessor, yet in Black Forest Labs' internal tests it still outperforms the proprietary competitor Ideogram V4.5 and the company's own FLUX.2 [pro] on Elo score. An INT8 version can run on NVIDIA GPUs with just 8 GB of VRAM, and on an RTX 4070 it generates a single image in under 9 seconds.
The available coverage stops at the release and these internal test figures. It does not mention pricing, download channels, or any third-party reproduction of the results.
AI-generated from 1 reports · updated 2 hours ago
Latest turnA user on the r/LocalLLaMA subreddit notes that weights for black-forest-labs' FLUX.3 Image Klein have been published on Hugging Face, calling it a better image generation model.
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A user on the r/LocalLLaMA subreddit notes that weights for black-forest-labs' FLUX.3 Image Klein have been published on Hugging Face, calling it a better image generation model.
Reddit · LocalLLaMAAI score 57Black Forest Labs has released FLUX 3 Image Klein, a 5.6B open-weights model for text-to-image generation and image editing. It takes a prompt plus up to 10 reference images and returns a single image, with text-to-image, single-reference edits and multi-reference compositions all handled by the same model. Qwen3-VL-4B-Instruct serves as the text encoder.
Reddit · LocalLLaMAAI score 57Black Forest Labs has released FLUX 3 Image Klein, a 5.6B-parameter open-weights image model with native 4K output, pixel-accurate editing, and support for up to ten reference images. The company says it tops all open models in internal Elo testing, ahead of Ideogram V4.5 and its own FLUX.2 [pro]. An INT8 build runs on NVIDIA GPUs with just 8 GB of VRAM, generating an image in under 9 seconds on an RTX 4070.
The DecoderAI score 68
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