Anthropic Claude Opus 4.8, the flagship of the Claude 4 family. Building on Opus 4.7 with sharper judgment, more reliable agentic behavior, and notably improved honesty: it is far less likely to make unsupported claims or to let flaws in its own code pass unremarked. Top-tier reasoning and writing for the most critical analyses and the content you ship to customers. Same pricing as Opus 4.7.