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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
One change · api

beta-headers changedapi/beta-headers

Nearest release: v2.1.239, published 2 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.

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First seen 14 Aug 2026 this site's first read of the page
Recorded edits13to this page, all time

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11---
22title: Beta headers
33url: https://platform.claude.com/docs/en/api/beta-headers
4description: Access experimental features before general availability with the `anthropic-beta` header or the SDKs' `betas` parameter.
4description: Access experimental features before they become part of the standard API with the `anthropic-beta` header or the SDKs' `betas` parameter.
55---
66 
77Beta headers allow you to access experimental features and new model capabilities before they become part of the standard API.
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