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Claude Code Issues

·2026.04.24 02:57

Key point

Three causes behind recent Claude Code quality degradation have been identified and fixed in v2.1.116+.

Details

The Claude Code quality degradation reported over the past month stemmed from 3 issues.

  • The scope of the issues was Claude Code and the Agent SDK harness, and Cowork was also affected since it uses the same SDK.
  • It was not a regression in the underlying model itself, and the Claude API was not affected.
  • All issues were fixed in v2.1.116+, and usage limits were reset for all subscribers.

To prevent recurrence, internal dogfooding will be aligned to the same config as users, and eval coverage for isolated system prompt changes will be expanded.

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