Workers AI adds open-source decision model Clef

Workers AI now includes Clef, an open-source decision model that outputs structured probabilities instead of text.

Cloudflare says Clef-flash is 13x faster than Jev and ready to handle routing and triage instantly. The change is documented in the [Workers AI changelog](https://developers.cloudflare.com/changelog/post/2026-10-01-clef-workers-ai/).