Cloudflare's Clef does not write text. You give it a situation and a list of options, and it returns how likely each one is. Here is why that is useful for routing, triage and approvals in AI workflows.
Published October 6, 2026. Sources: Cloudflare, Developers Digest.
Clef is an open-weights "decision model" from Cloudflare, released October 1, 2026. Instead of generating text token by token, it takes a situation and a list of multiple-choice options and returns a probability for each. That makes it fast and predictable for the small decisions inside AI workflows: where to route a request, whether to continue, whether a human should check.
The Reddit thread: r/LocalLLaMA: “Clef — Open-weights decision model by Cloudflare” (about 300 upvotes and 80 comments).
| Clef | Clef-flash | |
|---|---|---|
| Size | 27B parameters | 9B parameters |
| Base model | Qwen3.8-27B | Qwen3.5-9B |
| Input | Text and images | Text |
| Workers AI input price | $0.24 per million tokens | $0.09 per million tokens |
| License | Apache 2.0 | |
Prices as reported at launch; check Cloudflare for current rates.
| Chat LLM | Decision model | |
|---|---|---|
| Output | Free text | A probability for each option you list |
| Parsing | You must parse the answer, which can go wrong | Always one of your options |
| Confidence | Hard to read | Built in: 0.92 vs 0.51 tells you when to ask a person |
| Speed and cost | Slower, pays for output tokens | Fast, almost no output |
| Good for | Writing, reasoning, drafting | Routing, classification, yes/no gates |
The Reddit discussion welcomed it because so much of agent building is the boring glue: is this an invoice or a complaint? Is the draft safe to send? A model that answers only those questions, with a confidence score, removes a lot of fragile prompt parsing.
The confidence score is the useful part: it gives you a dial for how much you let AI handle alone.
Dooza AI customer support works this way: AI classifies and drafts, low-confidence and sensitive messages go to a person, and refunds and complaints come to you for one-tap approval.
Dooza is an AI-native company that builds AI products and services for small businesses, from the Dooza Workforce app to the Dooza Agents platform. A Dooza engineer scopes your pilot on a free 30-minute call, and every product starts with a refundable pilot: 100% refund within 14 days. Book a free pilot call or see pricing.
An open-weights decision model released by Cloudflare on October 1, 2026. It returns probabilities for a predefined list of options instead of generating text. It comes in a 27B version and a 9B Clef-flash version.
A model that, given a situation and a list of options, scores how likely each option is correct. It is used for routing, classification and yes/no checks in AI workflows.
The weights are released under the Apache 2.0 license on Hugging Face, and both models are also hosted on Cloudflare Workers AI.
When the answer must be one of a fixed set of choices and you want speed, low cost and a confidence score, for example routing tickets or deciding if a human should review.
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