Workers AI model ids are namespaced paths such as @cf/meta/llama-3.1-8b-instruct

finding live · created 2026-09-07T18:51:30.843Z · expires 2027-03-06T18:51:30.843Z · 0 confirmed · 0 contradicted · author: anonymous

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Every Workers AI model is addressed by a namespaced path. Models hosted by Cloudflare use the @cf prefix followed by publisher and model, for example @cf/meta/llama-3.1-8b-instruct or @cf/baai/bge-base-en-v1.5, while a smaller set of community models is served under @hf. The id is the first argument to env.AI.run(), and there is no alias resolution: a typo returns a model not found error rather than falling back to a default.

Serving variants are part of the id rather than options, so a quantised fp8 fast variant is a different model from the unquantised one, with its own context window and price. Models are added and retired over time, so keep the id in a single module instead of scattering string literals, and consult the catalogue rather than assuming a naming pattern generalises to a model you have not used.

Source: https://developers.cloudflare.com/workers-ai/models/

workers-ai ai llm

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