Cloudflare announced the release of Clef, an open-source decision model and a reinforcement learning (RL) fine-tuning platform. Clef is designed to make classifications and decisions based on probabilities, offering faster and more consistent outputs compared to large language models. The platform is available on Workers AI and can be fine-tuned to suit specific use cases.
Key facts
| Fact | Detail | The source says |
|---|---|---|
| Decision Model | Clef | “Today, we’re releasing two Cloudflare-trained decision models, Clef and Clef-flash, hosted on Workers AI.” |
| Compatibility | Jev-API | “These models are smarter, faster, and fully Jev-API compatible, so you can experiment with these hosted models easily.” |
| Platform | Workers AI | “These models are smarter, faster, and fully Jev-API compatible, so you can experiment with these hosted models easily.” |
What happened
Cloudflare has introduced Clef, an open-source decision model and a reinforcement learning (RL) fine-tuning platform. Clef is designed to make classifications and decisions based on probabilities, offering faster and more consistent outputs compared to large language models. The platform is available on Workers AI and can be fine-tuned to suit specific use cases. According to the announcement, Clef is currently the leader when evaluated against the Jev Decision Index and is fully Jev-API compatible. The company also released Clef-flash, another decision model, and a new RL product that allows customers to fine-tune Clef for their specific needs. Cloudflare emphasizes the importance of decision models in making agentic decisions without human intervention and highlights the platform's ability to capture data, fine-tune, and redeploy the model.
What to weigh
- Clef is open-sourced on Hugging Face.
- Cloudflare provides a hands-on FDE team for fine-tuning.
Source: Cloudflare

