Our summary
Cloudflare introduces Clef and Clef-flash, two AI models that make choices instead of writing answers. Michelle Chen explains how they could sort support messages or classify websites. Clef is not Jev: it is a separate Cloudflare model family that accepts the same kinds of questions and returns answers with probabilities.
Your software supplies information and the allowed answers, then uses the returned probabilities to decide what happens next. Cloudflare says Clef can also classify images and accept more input than Jev. The article compares the models on test tasks and describes training Clef with examples from a specific job.
These are Cloudflare’s reported results, not independently repeated tests. Clef leads many listed comparisons, but Jev leads some, including deciding when to call a tool and one workflow test. Sharing a question format does not mean equal answers. Cloudflare offers hands-on training help; its self-service training platform is still planned.
Key takeaways
- Clef and Jev are separate models; a compatible question format lets developers compare them without making their answers identical.
- Compare the task you need, not only a headline score: Cloudflare’s own tables include wins for Jev as well as Clef.
- Training for one job can trade away broader performance; the announced service starts with hands-on help, not a finished self-service platform.