Anthropic·· 2026-09-22Featured82
Claude Opus 5.5 is released for complex, sustained work
Claude Opus 5.5 is released for complex, sustained work
Brief overview
Anthropic launched Opus 5.5 with updates to coding, communication and safeguards. The company describes a focus on complex tasks and reports lower typical running costs than Opus 5.
Why it matters
Editorial takeaway: sustained engineering work needs different evaluation from quick classification. Review the original release and safety documentation before changing a production model.
Source: Anthropic · anthropic.com