fallback-credit changedbuild-with-claude/fallback-credit
Nearest release: v2.1.304, published 6 hours before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Recorded here
Lines+1added
Lines−1removed
From line
513
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits14to this page, all time
The whole hunk
from line 513, old and new numbered
/
from line 513
513513The retry model must be one of the refused model's permitted fallback targets. For Claude Fable 5.1, Claude Fable 5, and Claude Opus 5.5, those are Claude Opus 4.8 (`claude-opus-4-8`) and Claude Opus 5 (`claude-opus-5`). For Claude Opus 5, it is Claude Opus 4.8. For Claude Sonnet 5.5, it is Claude Sonnet 5 (`claude-sonnet-5`).
514514
515515<Accordion title="Looking up permitted fallback targets programmatically">
516 On the Claude API and Claude Platform on AWS, the target list is published as `allowed_fallback_models` on each model's entry in the [Models API](https://platform.claude.com/docs/en/api/models/list) when the `server-side-fallback-2026-07-01` beta header is set. The list is not yet visible under the `fallback-credit-*` header alone. It is not exposed on Amazon Bedrock, Google Cloud, or Microsoft Foundry.
516 On the Claude API and Claude Platform on AWS, the target list is published as `allowed_fallback_models` on each model's entry in the [Models API](https://platform.claude.com/docs/en/api/beta/models/list) when the `server-side-fallback-2026-07-01` beta header is set. The list is not yet visible under the `fallback-credit-*` header alone. It is not exposed on Amazon Bedrock, Google Cloud, or Microsoft Foundry.
517517</Accordion>
518518
519519## Checking that the credit applied
No line in this hunk matches that.