# AI Gateway adds confidence-based decision fallbacks

> Source: <https://vercel.com/changelog/confidence-based-decision-fallbacks>
> Published: 2026-10-06 17:19:00+00:00

[AI Gateway](https://vercel.com/docs/ai-gateway) can now escalate a decision request to a fallback model when the primary model's answer trips a confidence condition you set.

Conditions can be combined, so an escalation can depend on more than one signal. The plain model names you already list in `models` keep catching outright errors, so existing fallbacks are unaffected. Confidence conditions cover Choice and Score questions. Boolean questions escalate on a probability range instead.

Set the fallback by adding one conditional object to `providerOptions.gateway.models`. Requests without it keep their existing behavior.

Leave out `question` and the condition checks every question of the matching type, so `{ "confidenceBelow": 0.6 }` escalates when any Choice or Score answer falls below 0.6.

Because a triggered fallback runs a second decision, it bills both stages.

Decision fallbacks are in beta. Learn more in the [decision fallbacks documentation](https://vercel.com/docs/ai-gateway/models-and-providers/decision-fallbacks).