# Black Forest Labs releases FLUX 3 Image Klein as open-weights model

Digest AI · Generative AI & Models · published 2026-10-15T15:15:05Z · updated 2026-10-15T16:57:14Z

Canonical: https://digestai.news/story/black-forest-labs-releases-flux-3-image-klein-as-open-weights-model

## Summary

Black Forest Labs launched FLUX 3 Image Klein on October 15, 2026, a 5.6 billion-parameter open-weights model for text-to-image generation, image editing, and multi-reference generation. It supports up to 10 reference images and shares core capabilities with the full FLUX 3 Image model, including native 4K generation, pixel-perfect editing, and bounding-box control. The model integrates learnings from FLUX 3’s image, video, and audio branches to generate more realistic images grounded in real-world signals.

The release includes a base model for fine-tuning and a step-distilled model for low-latency generation, with optimized builds (FP8, INT8, NVFP4) developed with NVIDIA. The distilled model runs on NVIDIA GeForce RTX GPUs with as little as 8 GB VRAM, making it practical for local use. Black Forest Labs claims FLUX 3 Image Klein outperforms larger open-weights models and closed alternatives like Ideogram V4.5 and FLUX.2 pro in text-to-image, multi-reference generation, and image editing. It also extends the speed-quality tradeoff, with a reported median API latency of 4.54 seconds for text-to-image and 7.18 seconds for editing at 1MP. The company’s internal evaluations show it gains 91 Elo in text-to-image and 70 Elo in image editing compared to FLUX.2 klein 9B, using 38% fewer parameters.

The distilled model is available via the BFL API at $0.009 per 1K image, while base and distilled weights are open on Hugging Face. The model is licensed under the FLUX Kommunity License, allowing free commercial use for individuals and companies with annual revenue under $5M, with additional options for larger organizations. Safety measures include dataset filtering, targeted fine-tuning, and evaluations by external partner Cinder.

## Key points

- FLUX 3 Image Klein is a 5.6B-parameter open-weights model for text-to-image, editing, and multi-reference generation with 10-image support
- Black Forest Labs claims it outperforms larger open models and closed alternatives like Ideogram V4.5 in text-to-image and editing tasks
- Distilled model runs on NVIDIA RTX GPUs with 8GB VRAM, priced at $0.009 per 1K image via BFL API

## Why it matters

A smaller, faster open-weights model like FLUX 3 Image Klein lowers barriers for developers and artists to deploy high-quality image generation locally or via API, accelerating innovation in creative tools and applications.

## Sources

1. [New 5.6B-Parameter FLUX 3 Image Klein Debuts as Open-Weights Release](https://unite.ai/new-5-6b-parameter-flux-3-image-klein-debuts-as-open-weights-release) (Unite.AI, 2026-10-15)
2. [Black Forest Labs' open-weights image model FLUX 3 Image Klein runs on consumer GPUs with just 8 GB of VRAM](https://the-decoder.com/black-forest-labs-open-weights-image-model-flux-3-image-klein-runs-on-consumer-gpus-with-just-8-gb-of-vram) (The Decoder, 2026-10-15)

Part of the developing story: [Black Forest Labs Unleashes Flux AI Revolution](https://digestai.news/thread/black-forest-labs-releases-flux-3-action-an-open-robotics-model) (3 stories)

## Cite

Digest AI, "Black Forest Labs releases FLUX 3 Image Klein as open-weights model", 15 October 2026, https://digestai.news/story/black-forest-labs-releases-flux-3-image-klein-as-open-weights-model

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