Claude Opus 5.5 Intelligence, Performance and Price Analysis

Claude Opus 5.5, a leading model in intelligence, offers both text and image input, producing text outputs with a 1 million token context window. The model achieved a score of 58 on the Artificial Analysis Intelligence Index, significantly outperforming the median score of 25 among comparable models.

Claude Opus 5.5's performance is notable due to its somewhat higher cost compared to other models of similar price tiers. The model charges $4.00 per 1 million input tokens and $20.00 per 1 million output tokens, which are both higher than the median prices of $2.00 and $10.00, respectively. When considering a blended rate (7:2:1 cache hit/input/output ratio), the cost reduces to $2.94 per 1 million tokens, making it somewhat more affordable.

Despite the higher costs, Claude Opus 5.5 demonstrates impressive capabilities, scoring 58 on the Artificial Analysis Intelligence Index. Its ability to process large volumes of token data, with a total of 260 million tokens generated, sets it apart from the median of 92 million tokens. This model, developed by Anthropic and released on September 22, 2026, is a strong contender in the market of reasoning models in a similar price range.