AI Weekly Malaysia

Cloudflare released two Cloudflare-trained "decision models" — Clef and Clef-flash — hosted on Workers AI, open-sourced on Hugging Face under Apache 2.0, and made Jev-API compatible with Typesafe AI's Jev System One. Decision models return bounded, typed outputs with probabilities (e.g. 95% fashion, 85% ecommerce, <1% phishing) instead of open-ended text, and Cloudflare says Clef currently leads the Jev Decision Index. Cloudflare also debuted an RL product for fine-tuning Clef, and reported its own Threat Intelligence workflow classified a domain in 2.2s with Clef versus 4.7s for gpt-oss-120b, which returned only two classifications.

Why: If you are routing tickets, escalations, or domain/page categories inside an agent loop, a classifier that returns typed labels plus probabilities lets your code branch deterministically instead of parsing LLM prose — and since Clef is Apache 2.0 on Hugging Face you can self-host and test it without committing to Workers AI billing. Treat the 2.2s vs 4.7s figure as vendor-reported on Cloudflare's own Threat Intelligence workflow, so benchmark it on your own inputs before swapping out a prompt-based classifier. The new RL fine-tuning option is the piece to evaluate if your label set is domain-specific and you don't want to retrain a full classifier each time categories change.