Anthropic Releases Claude Opus 5.5, Optimized for Agent-Based Coding and Knowledge Work with Reduced Typical Load Costs

Anthropic announced Claude Opus 5.5 in its official news section on November 6, 2026. The news summary indicates that this version offers advantages in agent-based coding and knowledge work, and explicitly states that its operating costs are approximately 40% lower than Claude Opus 5 under typical workloads. The article discusses the implications for developer selection, cost models, and risk control in Agent integration, while emphasizing that specific conclusions should be based on actual testing by individual teams.