Opus 5.5 Is Fast but Often Ignores User Specs, Early Tests Show

Developer ssh4net reports that Anthropic's new Opus 5.5 writes code noticeably faster and follows coding conventions well, but often ignores user specifications and implements its own ideas, requiring extra code review and rework.

2026-09-30 ~ 2026-09-30 · 2 related posts

• Opus 5.5 hands-on: fast, but it rewrites your code to fit its own ideas — ssh4net · 2026-09-30
• Opus 5.5 writes code fast—but only the way it wants, says developer — ssh4net · 2026-09-30