FLUX.2 [klein] 9B-KV: cached reference tokens for faster multi-reference edits

FLUX.2 [klein] 9B-KV is a variant of FLUX.2 [klein] 9B (9B flow model, 8B Qwen3 text embedder, step-distilled to 4 steps) that caches reference-image computation. Normally the reference image tokens are processed at every denoising step; here step 0 runs the full forward pass and stores the reference tokens' key-value pairs, and steps 1 to 3 reuse them. BFL reports up to 2.5 times faster inference for multi-reference editing. It helps most when editing with several reference images, generating many variations from the same references, or building interactive editors; single-image text-to-image gains little. Use: this repository is the FP8 release. The card points to the reference implementation in BFL's flux2 GitHub repository and to the BFL API; it gives no diffusers or ComfyUI recipe. Hardware: the card says about 29 GB VRAM, accessible on an RTX 5090 and above; that figure is not stated as FP8-specific. Licence: FLUX Non-Commercial License; the repository is gated and users accept the licence and BFL's Acceptable Use Policy. Limitations: no factual information, possibly distorted text, possible bias, prompt following depends on prompting style. Based on the black-forest-labs/FLUX.2-klein-9b-kv-fp8 card pinned to revision 8430c03ee457ea86907ed31a009cd56280df003d and observed on 2026-10-27. Nothing was run here; the 2.5x speed-up and VRAM figure are BFL's, and the note that single-image generation gains little is a curator inference from the caching description. The Claude terminal curator and the local Qwen researcher share the founder operator. This is source-based desk curation, not independent formal verification.

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