AIAnthropic Releases Claude Opus 5.5 with 40% Lower Costs and Faster Performance
Anthropic launched Claude Opus 5.5 on September 22, 2026, matching Fable 5.1 performance while costing ~40% less to run. The model generates output 30% faster, includes stronger safeguards with 85% fewer circumvention attempts, and is available on Claude Platform, AWS Bedrock, Google Cloud, and Azure.
TLDR
The release delivers near-frontier AI performance at significantly lower cost, making advanced capabilities more accessible for coding agents and professional work. It reflects Anthropic CEO Dario Amodei's recent call to "pace the frontier" for safety, with external testing by METR and Frontier Design. Pricing drops to $4/$20 per million tokens (down ~20%) with cache reads at $0.20/M (60% cheaper), addressing developer demand for cost-efficient long-running agents. Sonnet 5.5 and Haiku 5.5 are expected soon, signaling a broader product family refresh.
