Cloudflare Clef 27B
Cloudflare's open-source 27B decision model, fine-tuned from Qwen3.8 27B to turn a state and a schema of typed questions into decisions.
Clef 27B is a cloud decision model from Cloudflare. It reads a piece of text and answers typed questions about it, such as a choice between labels, a yes or no, or a score on a scale, with a probability for every option instead of written text. It reads up to 66K input tokens per request. It runs through OpenRouter using your own API key, from $0.24 per million input tokens. It also runs on your own hardware through Ollama, with no API key and no per-use fees.
- Released
- Sep 2026
- Pricing
- $0.24 / 1M in · $0.00 / 1M out
- Answers
- Choice, yes/no, score
- Context window
- 66K in
Examples
Answered by Clef 27B via OpenRouter. A decision model returns probabilities, not prose, so each card shows how sure it was about every option. The same four questions run against every Classify model in the catalog.
Hi, I was charged twice for my March subscription. Can you refund the duplicate payment before the end of the week?
Which team should handle this support ticket?
- Payments, invoices and refunds99%
- Errors or broken features in the product0%
- Login, passwords and account settings0%
- Plans, pricing questions and upgrades0%
海辺のカフェの写実的な写真、夕暮れ、35mmフィルム風
What kind of image does this prompt ask for? It can be in any language.
- A logo or brand mark0%
- A photorealistic shot98%
- Drawn, painted or stylised art1%
- Anything else1%
What is a vector database, and when would a small team need one? I'm not asking you to build anything yet.
Does this message ask the assistant to create or generate something?
- Yes: it asks for something to be made1%
- No: it asks a question or wants an explanation99%
Checkout has returned an error for every customer since 9am and we are losing orders. Please look now.
How urgent is this message?
- Can wait for the next release0%
- Should be handled this week0%
- Should be handled today1%
- Needs attention right now98%
Cloudflare
Cloudflare runs a global developer platform and releases open models, including the Clef decision models fine-tuned from Qwen.
www.cloudflare.com ↗