Clef — Free AI Chat on Rewind.ai

Chat with Clef for free — no signup, no credit card. Cloudflare's Clef runs in your browser on Rewind.ai, with pay-as-you-go tokens and full API access.

What is Clef?

Clef is Cloudflare's open-source 27B multimodal decision model, a fine-tune of Qwen3.8-27B served on Workers AI. It turns a state (text or structured JSON) plus a schema of typed questions.

How does Clef work?

Type your message in the box above and Clef replies instantly — no setup required. Your chat history is saved locally in your browser; sign up free to sync it across devices and get an extra 10,000 tokens. You can switch between Clef and other models at any time from the picker at the top.

Is Clef free?

Clef is pay-as-you-go at $0.24/M input tokens, but you can use it without paying: every visitor gets 2,500 free tokens a day with no sign up, and a free account raises that to 5,000.