Anthropic’s Claude Opus 4.7 prompting guide references that prompt steering can impact Opus 4.7 more than previous Opus models. Opus 4.7 calibrates to task complexity and lets its extended reasoning be shaped by the prompt.

I did benchmarks of 200 headless Claude Code sessions comparing Opus 4.6 and Opus 4.7 1M-context models across effort levels and prompt steering variants - concise, step by step, ultrathink and how that impacts token usage and costs and instruction following performance.