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Sweep 03 Nov 2026 · 22:27Z Build v2.1.318 536 read Stable v2.1.311 Latest v2.1.318 Next v2.1.318 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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overview changedrelease-notes/overview

Nearest release: v2.1.318, published under an hour after 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 edits72to this page, all time

### November 3, 2026

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1212 For updates to Claude Code, see the [complete CHANGELOG.md](https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md) in the `claude-code` repository.
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15### November 3, 2026
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17* Text generated by Claude Mythos 5, Claude Opus 4.7, and Claude Sonnet 4.6 carries Anthropic’s text watermark on the platforms listed in [How Claude marks AI-generated content](https://support.claude.com/en/articles/16266773-how-claude-marks-ai-generated-content). On Claude Sonnet 4.6, text generated for a request that sets `temperature`, `top_p`, or `top_k` to a non-default value might not carry it. See [Text watermark](https://platform.claude.com/docs/en/build-with-claude/text-watermark).
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1519### November 2, 2026
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1721* Long conversations and agent loops on the Messages API can now send smaller requests and get a lower time to first token with [message threads](https://platform.claude.com/docs/en/build-with-claude/message-threads), in beta with the `message-threads-2026-08-12` beta header. The API keeps the conversation on the server, so each later request sends only the new messages. A thread expires 5 minutes after its last request and is deleted no more than 1 hour after its last use. Message threads are available on the Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), Claude Models on Google Cloud (Anthropic managed), and [Claude in Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry).
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