# Model fallbacks now available in Vercel AI Gateway

By Steven Van · 2025-11-10

Fallback models are tried in order until one succeeds, and billing is based on whichever model actually completes the request.

Vercel's [AI Gateway](<https://creatorstoolbox.com/tools/vercel>) can now fall back to another model when a request fails, instead of just returning an error. Fallback models are tried in the order given until one succeeds or the list runs out, and the request is billed based on whichever model actually completes it.

A fallback can be triggered by a provider outage, a context limit, an unsupported input, or a capability mismatch, such as a primary model that lacks multimodal support falling back to one that has it. Fallbacks are set with a **models** array inside **providerOptions.gateway**, and can be combined with provider routing (**order** or **only**) to also control which underlying provider handles each attempt.

Read the [announcement](<https://vercel.com/ai-gateway>) for setup examples.

[![](<https://lishhsx6kmthaacj.public.blob.vercel-storage.com/og-images/ai-gateway-og.png>)](<https://vercel.com/ai-gateway>)

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[Original source](<https://vercel.com/ai-gateway>)

[Read Model fallbacks now available in Vercel AI Gateway on Creators Toolbox](<https://creatorstoolbox.com/blog/vercel-model-fallbacks-now-available-in-vercel-ai-gateway>)

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Canonical source: https://creatorstoolbox.com/blog/vercel-model-fallbacks-now-available-in-vercel-ai-gateway