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NoClaude · 6 Apr 2026

Multiple people on our team independently have noticed a _significant_ drop in quality and intelligence on opus 4.6 the past few weeks

JamesSwift on Hacker News

In the thread “Issue: Claude Code is unusable for complex engineering tasks with Feb updates”

Got in the way: Hallucinations, nonsensical reasoning, and ignoring context data.

Multiple people on our team independently have noticed a _significant_ drop in quality and intelligence on opus 4.6 the past few weeks. Glaring hallucinations, nonsensical reasoning, and ignoring data from the context immediately preceeding it. …