The 'ultrathink' command is highlighted in Anthropic's public documentation as a trigger for Claude's extended thinking mode, which provides additional computation time to improve problem-solving approaches. This command is part of a hierarchy of thinking commands that increase the "thinking budget": 'think', 'think hard', 'think harder', and 'ultrathink'. Users speculate on the potential for these commands to be integrated more transparently into the user interface. There is also discussion about the competitiveness of Claude against other models like Gemini 2.5, particularly in terms of cost-effectiveness, and a general sentiment favoring ease of access over 'magic' commands.