Scores prior to Claude Sonnet 4.5 were measured on the original OSWorld; scores from Sonnet 4.5 onward use OSWorld-Verified. OSWorld-Verified (released July 2025) is an in-place upgrade of the original OSWorld benchmark, with updates to task quality, evaluation grading, and infrastructure.
Sonnet 4.6 outperforms Sonnet 4.5 on Vending-Bench Arena by investing in capacity early, then pivoting to profitability in the final stretch.
