AI engineering glossary · MLOps, LLMOps cloud

What is fallback model?

Fallback model: A secondary model or provider automatically used when the primary one fails, times out or is rate-limited. It improves availability of language-model applications, though answer style and quality may differ from the primary.

Level: advancedTopic: MLOps, LLMOps cloud

Fallback model: an example

When the main provider returns errors, the gateway retries the request on a backup model so users still get a reply.

Related terms

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Where you learn it

Fallback model is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.

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