Morning Edition · Saturday, October 3, 2026Published at 2:33 AM EDT · New York

Cloudflare Trains Its First Models and Releases Them as Open-Weight Decision Engines

Clef is a 27-billion-parameter model built on a Qwen backbone that returns typed probabilities from a single prefill pass, with Cloudflare reporting a 38.8-millisecond median latency for the smaller Clef-flash.

Cloudflare has released Clef and Clef-flash, its first in-house trained models, as open-weight decision models on Workers AI, alongside a reinforcement-learning fine-tuning service. The models do not generate text. Given an input and a set…