# fallback (respaldo (fallback))

A backup that answers when the main provider can't, so your app keeps working.

**Example:** For example, if Tokentide returns a `503` capacity error, your backend immediately retries the request through Vercel AI Gateway as a fallback.


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Source: [Agentic Makers](https://agenticmakers.app/en/glossary/fallback) · License: CC BY 4.0