Skip to content

Workers AI - Introducing Clef: Cloudflare's first open-source decision models, now on Workers AI

Update2 days agoUnverifiedAdded Oct 2, 2026

Meet @cf/cloudflare/clef and @cf/cloudflare/clef-flash , the first models trained by the Cloudflare Workers AI team, available on Workers AI today. Clef is a decision model, in the same family as Typesafe's Jev ↗︎ . Instead of generating text, it reads an input state and a set of typed questions, then returns a probability for every allowed answer.

Topics: AI agents, Observability, Performance

Cloudflare's release notes

More Cloudflare developer platform releases

Every Cloudflare developer platform release

Also shipped on Oct 1, 2026

Cloudflare in October 2026

New releases by email

Tuesday mornings: the week's data, AI and developer-tools releases, only in weeks when something shipped.

Double opt-in. Unsubscribe any time.