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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.17

3 entries read diff v2.1.16 → v2.1.17 Markdown

This is a maintenance release with no user-facing changes. The release updates internal build metadata and reorganizes module imports for better code organization.

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1 entry

New Featuresopen

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None.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

1 entry

Improvementsopen

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None.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

1 entry

Bug Fixesopen

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None.

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Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

1 entry

Notesopen

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This version was built approximately 2 hours after v2.1.16 (19:02:14Z → 21:01:06Z on 2026-01-22), suggesting it may address an internal build issue or deployment concern that required a rapid follow-up release. The 99.9% structural similarity and lack of any functional code changes indicate this was likely a build pipeline fix or internal tooling update rather than a feature or bug fix release.

Evidence

The only changes detected were:

  • Version constant: VERSION: "2.1.16" → VERSION: "2.1.17" at multiple locations (line 1545 in old, line 3772 in new)
  • Build timestamp: BUILD_TIME: "2026-01-22T19:02:14Z" → BUILD_TIME: "2026-01-22T21:01:06Z"
  • Import statement reorganization (16 removed, 16 added) - purely internal bundler changes with no functional impact

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

Verbatim
Official · Anthropic

Anthropic’s official release notes

Published verbatim by Anthropic for v2.1.17. Text is unmodified from the upstream changelog. Everything else on this page came out of the bundle instead, which is why the two lists don't match.

  • Fixed crashes on processors without AVX instruction support
Read it on GitHub →
System prompt

The system prompt was not captured for this release, so this page cannot say whether it moved.

Which releases were captured →