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Oct 31, 2024
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Update fallbacks.mdx #17891

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Update fallbacks.mdx
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14 changes: 11 additions & 3 deletions src/content/docs/ai-gateway/configuration/fallbacks.mdx
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Expand Up @@ -3,10 +3,9 @@ pcx_content_type: configuration
title: Fallbacks
sidebar:
order: 2

---

import { Render } from "~/components"
import { Render } from "~/components";

Specify model or provider fallback with your [Universal endpoint](/ai-gateway/providers/universal/) to specify what to do if a request fails.

Expand All @@ -25,8 +24,17 @@ graph TD
D --> E[Return Response]
```

<br/>
<br />

You can add as many fallbacks as you need, just by adding another object in the array.

<Render file="universal-gateway-example" />

## Response header(cf-aig-step)

When using the [Universal Endpoint](ai-gateway/providers/universal/) with fallbacks, the response header `cf-aig-step` indicates which model successfully processed the request by returning the step number. This header provides visibility into whether a fallback was triggered and which model ultimately processed the response.

- `cf-aig-step:0` – The first (primary) model was used successfully.
- `cf-aig-step:1` – The request fell back to the second model.
- `cf-aig-step:2` – The request fell back to the third model.
- Subsequent steps – Each fallback increments the step number by 1.
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