Clef

Made by Cloudflare. Launched Oct. 1, 2026.

Cloudflare's first in-house decision model: a 27B open-weight model built on Qwen3.8-27B that returns a probability for every allowed answer instead of generating text. Hosted on Workers AI and released alongside the smaller Clef-flash.

Licence
Apache-2.0 (open weights)
Pricing
$0.24 per 1M input tokens; output not billed

Independent benchmarks

Links