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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
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Claude Code v2.1.246 ·

Bundled release notes now include 2.1.245

/release-notes now includes 2.1.245, covering a Linux startup crash fix on glibc 2.44.

Use it now Improvements
JSON All of v2.1.246
Use it nowTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
ImprovementsKind: in v2.1.246,
What probably matters to youSection of the release
What

The release notes shipped inside the binary, shown by /release-notes and the startup "What's new" prompt, gain a 2.1.245 section covering the Linux startup crash fix on distributions with glibc 2.44.

Details
  • The single entry names Arch Linux, CachyOS and Fedora Rawhide as examples.
  • Visible to everyone on this build.
Evidence

Fixed a crash on startup on Linux distributions that ship glibc 2.44 (for example Arch Linux, CachyOS and Fedora Rawhide)

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Read from
Names in the bundle/release-notes
Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Added since A small documentation edit on overview touched a line naming /release-notes after this was published. <Card id="claude-opus-5-5" title="Claude Opus 5.5" icon="file" href="https://platform.claude.com/docs/en/release-notes/system-prompts/claude-opus-5-5" /> release-notes/system-prompts/overview see the edit
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesA small documentation edit on overview touched a line naming /release-notes after this was published.

See this entry in the whole of v2.1.246 →

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