Introducing Clef: our open-source decision models, and new RL fine-tuning platform

Not every agent decision needs a chatty LLM. Cloudflare open-sourced Clef — classification-only models (Apache 2.0, on Hugging Face) that return bounded structured output instead of prose. Median latency across 43 benchmarks: 38.8ms for Clef-flash against 524.1ms for Jev. They also shipped an RL platform to fine-tune it on your own traffic. Routing and tool-choice is where a lot of agent latency quietly hides.