Redditor: Claude Opus 5 suffers 'masterpiece syndrome' vs Fable 5

On r/ClaudeAI, a user likens Claude Opus 5 to GRRM: it backtracks, double-checks, and adds unrequested embellishments while writing — 'a master forever plagued by masterpiece syndrome.' The post, contrasting Opus 5 with Fable 5, also says the model struggles in conversation.