Dev: Opus 5.5 finds bugs that eluded other models for weeks, shows new agency
doodlestein · x · 2026-09-23
Developer doodlestein says Opus 5.5 is "breathtaking": it grinds through tricky tasks effortlessly and surfaces bugs that stumped Fable and Astra for weeks, showing an unprecedented level of agency and resolve. A notable early hands-on signal of strong agent behavior.
Related event: Anthropic Launches Claude Opus 5.5: Stronger, 40% Cheaper, Tops AA Index(259 posts)→
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