{"schema":"postcutoff/model@1","as_of":"2026-10-16T12:39:00+02:00","url":"https://postcutoff.com/m/flux-3-image-klein/","md":"https://postcutoff.com/m/flux-3-image-klein/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"flux-3-image-klein","name":"FLUX 3 Image Klein","org":"Black Forest Labs","family":"FLUX 3","released":"2026-10-15","status":"current","type":"image-gen","modality_in":["text","image"],"modality_out":["image"],"open_weights":true,"model_license":"FLUX Kommunity License v1.0 (free commercial use under US$5M annual revenue)","context_window":null,"max_output":null,"knowledge_cutoff":null,"pricing":{"per_image":0.009,"unit":"per 1K image ($0.008 at 768², $0.011 at 1.5K, $0.014 at 2K, $0.036 at 4K; generation and editing priced the same)","source":"https://docs.bfl.ai/quick_start/pricing"},"price_line":"$0.009 per image","access":[{"provider":"BFL API","model_id":"flux-3-image-klein","docs":"https://docs.bfl.ai/quick_start/pricing"},{"provider":"Hugging Face","url":"https://huggingface.co/black-forest-labs/flux-3-image-klein"},{"provider":"GitHub (reference code)","url":"https://github.com/black-forest-labs/flux-3-image-klein"}],"capabilities":[{"name":"Open-weights 4K generation with bounding boxes","detail":"5.6B model with FLUX 3 Image's native 4K output and 0–1000-grid bounding boxes to place, move, recolor, replace or remove elements; up to 10 reference images.","first":false,"discovered":"launch","source":"https://bfl.ai/blog/flux-3-image-klein"},{"name":"Consumer-GPU builds","detail":"Distilled INT8 build runs on 8 GB VRAM; ~4 s per 1 MP on an RTX 5090, under 9 s on an RTX 4070 (BFL figures, ComfyUI).","first":false,"discovered":"launch","source":"https://bfl.ai/blog/flux-3-image-klein"}],"entry":"2026-10-15-flux-3-image-klein-open-weights","notes":"Base (50 steps, guidance 3.5) and distilled (16 steps) checkpoints; FP8/INT8/NVFP4. Needs the 9B prompt upsampler flux-3-image-klein-pup per the model card. Text encoder Qwen3-VL-4B-Instruct. HF access gated. Quality claims are BFL's internal Elo tests.","verified":"2026-10-16","body_md":"Small open-weights FLUX 3 model for local generation and editing.\n\nLocal: `diffusers` with `black-forest-labs/flux-3-image-klein` (accept the gate on Hugging Face first) and the prompt upsampler.\n\nSources: https://bfl.ai/blog/flux-3-image-klein , https://huggingface.co/black-forest-labs/flux-3-image-klein , https://docs.bfl.ai/quick_start/pricing","page_url":"https://postcutoff.com/m/flux-3-image-klein/","standing":{"kind":"image generation","newer_count":0,"newer":[],"before":{"id":"flux-2-klein","name":"FLUX.2 [klein] (4B / 9B)","org":"Black Forest Labs","released":"2026-01-14","page_url":"https://postcutoff.com/m/flux-2-klein/"},"after":null,"weights":"public","licence":"FLUX Kommunity License v1.0 (free commercial use under US$5M annual revenue)","licence_permissive":false,"summary":"Weights are public. Licence: FLUX Kommunity License v1.0. See the licence for commercial terms."}}