Claude Opus 4.8

Claude Opus 4.8 is the latest and most capable entry in Anthropic's Opus line, refining what was already a strong foundation. It pushes further on code generation quality, agentic task execution, and calibrated honesty — areas where 4.7 was already competitive. The 1M token context window gives it room for large codebases and lengthy documents. The trade-off remains the same: this is Anthropic's heaviest model, so expect higher latency and cost compared to Sonnet or Haiku.