Cloudflare's Clef is built on Qwen3.8-27B with 27 billion parameters, while Clef-flash is built on Qwen3.5-9B with 9 billion parameters

From the articleCloudflare says its new Clef model means humans no longer need to be in the loop for AI agentsAlso in Cloudflare releases Clef and Clef-flash decision models on Workers AI, Cloudflare tries to outplay Jev with open-weight Clef models