Everything on Agentic Performance

The model excels in long-running agentic tasks, successfully executing 25-82 step workflows including inbox triage and backend feature building. It demonstrates robust error handling and prompt injection resistance.

Impact: Enables more complex and autonomous AI workflows, reducing the need for human intervention in repetitive tasks.

— from Claude Opus 5.5: Cost, Speed, and UX Shifts · How I AI· Sep 22, 2026