--- format: "aidr-story-markdown/v1" id: "c0a0a5f5affd26928d0fd340f88982d915a498730c34226ffd0e46dc16ea882a" canonical_url: "https://aidr.today/c0a0a5f5?lang=en" title: "Clef: Open-weight decision models, and new RL fine-tuning platform" lang: "en" requested_lang: "en" available_langs: ["en","vi"] translation_fallback: null fallback_fields: [] published_at: "2026-10-01T15:34:02.000Z" category: "Tools" topics: ["open-source","devtools","llm","data-engineering"] source_urls: ["https://blog.cloudflare.com/clef-decision-models/","https://huggingnews.com/ai/cloudflare-launches-first-in-house-ai-models-with-clef-release-a24250a0","https://x.com/michellechen/status/2105684868550045751","https://marketbrief.now/ai/cloudflare-launches-first-in-house-ai-models-with-clef-release-a24250a0","https://x.com/lucataco/status/2105686375315951818","https://x.com/calebfahlgren/status/2105706249249767544","https://x.com/julien_c/status/2105704749375103319","https://huggingnews.com/ai/cloudflare-first-in-house-ai-runs-13x-faster-than-jev-4db7df88"] summary: "We are introducing Clef and Clef-flash, open-source decision models hosted on Workers AI for high-speed classification and agentic workflows. Also launching: a new reinforcement learning platform that allows developers to fine-tune decision models using their own data." --- # Clef: Open\-weight decision models, and new RL fine\-tuning platform > [Open the canonical story]() **Published:** 2026-10-01T15:34:02.000Z **Category:** Tools **Topics:** open\-source, devtools, llm, data\-engineering ## Summary We are introducing Clef and Clef\-flash, open\-source decision models hosted on Workers AI for high\-speed classification and agentic workflows\. Also launching: a new reinforcement learning platform that allows developers to fine\-tune decision models using their own data\. ## Sources - [Story source]() - [Story source]() - [Story source]() - [Story source]() - [Supporting source]() - [Supporting source]() - [Supporting source]() - [Story source]()