Agent skill · genmedia-labs
flux-2-klein
Generate images with Flux 2 Klein (Black Forest Labs' distilled fast variant of Flux 2) on RunComfy — bundled with the model's documented prompting patterns so the skill gets sharper output than naive prompting against the same model. Documents Flux 2 Klein's strengths (sub-second latency, multi-reference brand styling, declarative subject-first prompts), the step-count strategy (4–8 for fast iteration, ~25 for polish), the 9B vs 4B variant trade-off, and when to route to Flux 2 Pro / Seedream 5 / GPT Image 2 instead. Calls `runcomfy run blackforestlabs/flux-2-klein/9b/text-to-image` (or `/4b/`) through the local RunComfy CLI. Triggers on "flux 2 klein", "flux-2-klein", "flux klein", "BFL flux 2", or any explicit ask to generate with this model.
What it needs
About 6k tokens when loaded.
What this skill does
Flux 2 Klein — Pro Pack on RunComfy runcomfy.com · 9B model · 4B model · GitHub Black Forest Labs' Flux 2 Klein (the distilled, low-latency variant of Flux 2) hosted on the RunComfy Model API — no API key, async REST. When to pick this model (vs siblings) Flux 2 Klein's distinct strength is latency-first creative iteration: sub-second feedback enables live art-direction sessions and rapid product visualization that batch-style models can't sustain. Pick it when iteration speed matters more than ceiling resolution. You want Use --- --- Real-time / live art-direction sessions Flux 2 Klein 4B Fast iteration with strong detail at the end Flux 2 Klein 9B Multi-reference brand styling with consistent looks Flux 2 Klein 2K–4K hero images, max resolution Seedream 5 Maximum prompt adherence + extreme detail Flux 2 Pro Embedded text, logos, multilingual signage GPT Image 2 Hyperrealistic portrait Nano Banana Pro If the user said "Flux 2 Klein" / "BFL Klein" / "flux klein" explicitly, route here regardless. If they said "Flux 2" generically, ask whether they want Klein (fast) or Pro (max quality) before defaulting. Prerequisites 1. RunComfy CLI — npm i -g @runcomfy/cli 2. RunComfy account — runcomfy login opens a browser device-code flow. 3. CI / containers — set RUNCOMFYTOKEN=<token> instead of runcomfy login. Endpoints + input schema Two variants, same endpoint shape, same prompt grammar. blackforestlabs/flux-2-klein/9b/text-to-image The fidelity-first variant. Use for polish / final output. Field Type Required Default Notes --- --- --- --- --- prompt string yes — Up to ~512 tokens. Longer degrades. steps int no 25 4–50. Step-distilled architecture — 4–8 enough for concepting; ~25 for polish; >25 buys little. width int no 1024 512–1536 typical. Aspect ratio capped at 16:9, max ~2K total. height int no 1024 Match width's aspect intent. blackforestlabs/flux-2-klein/4b/text-to-image The latency-first variant. Sub-second 4-step inference. Use for live iteration / concepting. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills genmedia-labs/flux-2-klein