Flux-3's Prompt Rewriter Works Great With Flux-2 Too
Violent_Walrus · reddit · 2026-10-19
The author found that the Flux-3 prompt rewriter model (black-forest-labs/flux-3-image-klein-pup, a qwen finetune) and its system prompts work with Flux-2, producing far more effective detailed prompts than hand-written ones — especially for non-trivial image edits. They serve it via a llama.cpp server on a separate machine with results in seconds, faster than ComfyUI's in-ComfyUI GenerateText.
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