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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 v2.1.117

Model Deprecation Remapping System

What

Expanded model deprecation tracking with retirement dates and automatic remapping guidance for deprecated models.

Details
  • New entries for Claude Opus 4 (retiring June 15, 2026 on first-party), Claude Opus 4.1, and Claude Sonnet 4 (retiring June 15, 2026 on first-party)
  • Models with remappedTo field tell users what replacement to use (e.g., Opus 4 and 4.1 remap to "the latest Opus")
  • Replaces the older deprecation table that only covered Claude 3 Opus, Claude 3.7 Sonnet, and Claude 3.5 Haiku
  • The system displays warnings via addNotification when a model is approaching retirement
Evidence

Model deprecation table with remappedTo field (search for "remappedTo") — Vq8 at line ~544460

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.

See this entry in the whole of v2.1.117 →