signalHacker News Best2026-10-02
Clef: Open-weight decision models, and new RL fine-tuning platform
Cloudflare introduces Clef and Clef-flash, open-weight decision models hosted on Workers AI, with Clef leading the Jev Decision Index and offering a vision encoder and 64k context window. The models are Jev-API compatible and open-sourced under Apache 2.0. Cloudflare also debuts an RL fine-tuning platform to customize Clef for specific use cases.
- for who
- AI developers and teams building agentic decision workflows.
- why now
- Cloudflare launches open-source decision models Clef and new RL fine-tuning platform today.
- what changes
- Developers can now integrate fast, deterministic decision models with vision and larger context into agentic workflows, and fine-tune them via RL.
- to do
- Deploy Clef via Workers AI or locally, and use the RL fine-tuning platform to adapt it to your use case.
key points
- Clef and Clef-flash are open-sourced under Apache 2.0
- Clef classifies a domain in 2.2s vs gpt-oss-120b's 4.7s
- Clef includes a vision encoder and 64k context window
#decision models#open source#rl fine-tuning#cloudflare
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