Anthropic Finally Answered the 320-Reaction 'Opus Writes Incoherent Slop' Issue, and the Reply Reads Like Claude Wrote It
Boris Cherny responded on 2026-08-17 to claude-code issue #77136, open since 2026-07-13 with 33 comments and 320 reactions, titled around Opus 4.8's language being unpleasant to work with and Opus 5.0 driving incoherence further. The response says he ran technical questions non-interactively on Claude Code 2.1.233 and got plain direct prose, classifies the report as model-behavior feedback rather than a Claude Code bug, and routes it to model tuning with custom output styles as the interim workaround. The r/ClaudeAI thread's joke is the framing ("guess who wrote it"), and the substantive complaint underneath is a commenter arguing that an inability to reproduce register drift over long sessions means nobody is reading the output word by word.
Source
↳ Follow the thread