BFL Updates FLUX 3 Image Klein Workflows: Prompt Upsampling and 2K Resolution Required
bfl_ai · x · 2026-10-17
Black Forest Labs shipped updated ComfyUI workflows for FLUX 3 Image Klein, recommending ComfyUI v0.41.3 and refreshed Hugging Face Spaces.
Best practice per BFL: run the model with their prompt upsampling at 2K resolution; if unavailable, the recommended system prompt is published for custom pipelines. Klein is a 5.6B open-weights model for text-to-image and editing with up to 10 reference images, using Qwen3-VL-4B-Instruct as text encoder. Short prompts sent as typed yield generic output — always upsample to full scene captions.
Related event: Black Forest Labs Updates FLUX 3 Image Klein ComfyUI Workflow(2 posts)→
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