02/19/2026
Anthropic’s Claude Opus 4.6 introduces adaptive thinking, an advanced reasoning mode that automatically adjusts how much reasoning to apply based on task complexity. With a 5x larger context window, an output capacity of 128,000 tokens, and enhanced tool capabilities, Opus 4.6 sets new standards for handling long-running, agentic tasks. This model shifts the burden of decision-making from developers to the model itself, reducing inference costs and improving performance across simple and complex tasks.Category