[Anthropic Releases Claude Opus 5.5, Reducing Typical Workload Costs by 40%] Anthropic has launched the first model in the Claude 5.5 series, Claude Opus 5.5. Compared to Opus 5, this model offers improvements in agent programming, computer operations, and knowledge work. Under default settings, typical workload costs are reduced by 40%, and output speed is increased by over 30%. Its natural language expression, key information presentation, and instruction-following capabilities have been enhanced. Prior to release, it underwent evaluations by external organizations such as METR and Frontier Design.