Claude Opus 5.5 Intelligence, Performance and Price Analysis

Claude Opus 5.5, released in September 2026, ranks among the top AI models with an intelligence score of 58 on the Artificial Analysis Intelligence Index, significantly above the median of 25. However, it is relatively expensive at $4.00 per million input tokens and $20.00 per million output tokens—roughly double typical pricing—while producing verbose outputs (260M tokens versus a median of 92M). The model supports text and image inputs with a 1M token context window and includes reasoning capabilities.