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Anthropic says it has fixed three causes of recent Claude Code quality issues: reduced default reasoning, a caching bug, and a system prompt to reduce verbosity

We traced recent reports of Claude Code quality issues to three separate changes.  Here's what happened and what we're changing.

Anthropic

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Discussion

  • @theo @theo on x
    Confirmed that Claude Code got dumber, not Claude. They shipped slop and it made the models worse. [image]
  • @claudedevs @claudedevs on x
    Over the past month, some of you reported Claude Code's quality had slipped. We investigated, and published a post-mortem on the three issues we found. All are fixed in v2.1.116+ and we've reset usage limits for all subscribers.
  • r/ClaudeAI r on reddit
    Post-mortem on recent Claude Code quality issues
  • r/ClaudeCode r on reddit
    An update on recent Claude Code quality reports
  • @carnage4life Dare Obasanjo on bluesky
    Anthropic has tracked down and fixed why Claude seems to have gotten dumber in the past month.  —  1. Reduced default reasoning effort (from High to Medium).  —  2. A caching bug that accidentally deleted Claude's memory mid-session.  —  3. A system prompt change for verbosity th…
  • r/ClaudeAI r on reddit
    Claude Code has big problems and the Post-Mortem is not enough