Cloudflare introduces Clef and Clef-flash, open-source decision models hosted on Workers AI for high-speed classification and agentic workflows, alongside a new reinforcement learning platform that lets developers fine-tune decision models with their own data.
# Cloudflare Clef: open-source decision models | Product Hunt
Source: [https://www.producthunt.com/products/cloudflare-clef](https://www.producthunt.com/products/cloudflare-clef)
[https://www.producthunt.com/](https://www.producthunt.com/)
- [Best Products](https://www.producthunt.com/categories?ref=header_nav)
- [Launches](https://www.producthunt.com/leaderboard/daily/2026/10/2?ref=header_nav)[Launch archiveMost\-loved launches by the community](https://www.producthunt.com/leaderboard/daily/2026/10/2?ref=header_nav)[Launch GuideChecklists and pro tips for launching](https://www.producthunt.com/launch?ref=header_nav)
- [News](https://www.producthunt.com/newsletters?ref=header_nav)[NewsletterThe best of Product Hunt, every day](https://www.producthunt.com/newsletters?ref=header_nav)[StoriesTech news, interviews, and tips from makers](https://www.producthunt.com/stories?ref=header_nav)[ChangelogNew Product Hunt features and releases](https://www.producthunt.com/changes?ref=header_nav)
- [Forums](https://www.producthunt.com/forums?ref=header_nav)[ForumsAsk questions, find support, and connect](https://www.producthunt.com/forums?ref=header_nav)[Kitty Points LeaderboardThe highest scoring community members](https://www.producthunt.com/kitty-points?ref=header_nav)[StreaksThe most active community members](https://www.producthunt.com/visit-streaks?ref=header_nav)[EventsMeet others online and in\-person](https://lu.ma/producthunt)
- [Advertise](https://www.producthunt.com/sponsor?ref=header_nav)
[Subscribe](https://www.producthunt.com/newsletters?ref=header_nav&campaign=weekly_newsletter&source=header_nav)
Launching today
Launching today
## open\-source decision models
29 followers
## open\-source decision models
29 followers
[Visit website](https://blog.cloudflare.com/clef-decision-models?ref=producthunt)
[AI Infrastructure Tools](https://www.producthunt.com/categories/ai-infrastructure)
•
[Foundation Models](https://www.producthunt.com/categories/foundation-models)
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\.
- [Overview](https://www.producthunt.com/products/cloudflare-clef)
- [Reviews](https://www.producthunt.com/products/cloudflare-clef/reviews)
- [Alternatives](https://www.producthunt.com/products/cloudflare-clef/alternatives)
- [Team](https://www.producthunt.com/products/cloudflare-clef/makers)
- [Awards](https://www.producthunt.com/products/cloudflare-clef/awards)
- More
Payment Required
Launch tags:
[Open Source](https://www.producthunt.com/topics/open-source)•[Artificial Intelligence](https://www.producthunt.com/topics/artificial-intelligence)
Launch Team
[https://www.producthunt.com/@chrismessina](https://www.producthunt.com/@chrismessina)[https://www.producthunt.com/@michelle_chen13](https://www.producthunt.com/@michelle_chen13)[https://www.producthunt.com/@alex_reneau](https://www.producthunt.com/@alex_reneau)
Cloudflare released Clef-Flash, a 9B multimodal decision model built on Qwen3.5-9B that converts a state plus a schema of typed questions into per-option probabilities in a single forward pass, with no free-form text generation or output parsing.
Cloudflare released Clef, an open-weights 27B multimodal decision model that takes a state and a schema of typed questions as input and returns probabilities for each option in a single forward pass, with no free-form generation or output parsing. It is post-trained from Qwen3.8-27B, ships on Hugging Face with a smaller Clef-Flash variant, and is compatible with the Jev/SystemOne API.
Cloudflare released Clef, an open-source 27B multimodal decision model that uses a frozen Qwen backbone and a tiny schema head to score all answer options in a single forward pass with no text generation, achieving 4x the speed and up to 2x the accuracy of Jev. A smaller faster variant, Clef-Flash, is also available on Hugging Face.
Cloudflare released Clef, an open-source (Apache 2.0) 27B multimodal decision model on Hugging Face that converts a state and a schema of typed questions into probabilities for all options in a single forward pass. Post-trained from Qwen3.8-27B, Clef has no free-form text generation and is API-compatible with Jev and SystemOne, with a smaller Clef-Flash variant available.