Release
Cloudflare releases Clef and Clef-flash decision models under Apache 2.0
On October 1, 2026, Cloudflare released Clef and Clef-flash, the first models trained by its Workers AI team. They are decision models: given a state and a set of typed questions, they return a probability for each allowed answer, so an agent can classify or route a task. Clef is post-trained from Qwen3.8-27B and Clef-flash from Qwen3.5-9B. The weights are on Hugging Face under the Apache 2.0 license, and both models are also hosted on Workers AI. Cloudflare also announced reinforcement-learning fine-tuning of Clef for customers, offered for now as a hands-on service with its forward-deployed engineers.123
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USASI. (2026, October 1). Cloudflare releases Clef and Clef-flash decision models under Apache 2.0. United States of America Superintelligence. https://unitedstatesofamericasuperintelligence.com/news/cloudflare-releases-clef-decision-models/
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@misc{usasi_news_cloudflare_releases_clef_decision_models,
author = {{USASI}},
title = {Cloudflare releases Clef and Clef-flash decision models under Apache 2.0},
year = {2026},
month = oct,
howpublished = {\url{https://unitedstatesofamericasuperintelligence.com/news/cloudflare-releases-clef-decision-models/}},
note = {United States of America Superintelligence. Last updated 2026-10-01}
}The date is when this page was last updated. Add the date you read it if your style needs one.