Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)

claude-opus-5-5-xhigh

Analysis of Anthropic's Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) and comparison to other AI models across key metrics including quality, price, performance (tokens per second & time to first token), context window & more.