Also out today: You can now directly configure the effort level and adaptive thinking in Code (/effort) and Cowork! Effort allows you to tun…

Also out today: You can now directly configure the effort level and adaptive thinking in Code (/effort) and Cowork! Effort allows you to tune Claude's intelligence vs token spend, trading off capability for faster speed and lower costs. Opus 4.8 respects effort levels strictly, especially at the low end. At low and medium, the model scopes its work to what was asked rather than going above and beyond. This is a good option to control spend and cost, but for more complex work we do recommend High and above - your outputs will probably be better.

Source: Boris Cherny (X) | 2026-05-28