CLAUDE OPUS 5.5: INTELLIGENCE, PERFORMANCE, AND PRICE ANALYSIS

Summary from the TLDR Dev newsletter

Artificial Analysis ranks Claude Opus 5.5 first among 212 models on its Intelligence Index with a score of 58. The tested configuration supports a one million token context window and costs $4 per million input tokens and $20 per million output tokens, though it generated far more output tokens than the median comparison model.