the launch mentions cybersecurity false positives dropping 60%, but doesn't say whether that's from genuinely better judgment or a loosened threshold - a published tradeoff number (false negatives, not just false positives) would make that claim easier to trust rather than take on faith.
Claude Opus 5.5 is Anthropic’s first model in the new Claude 5.5 family.
Problem / solution: It helps with long, complex work like agentic coding and knowledge work, and is built to do that work more efficiently.
What’s different? It leads in agentic coding, computer use, and knowledge work, while costing 40% less than Opus 5 on typical workloads.
Features and benefits
- Stronger performance on complex tasks.
- Better communication that is clearer and easier to follow.
- Stronger safety safeguards and resistance to prompt injection.
- Faster output and lower token costs.
Who it’s for
- Developers, enterprises, researchers, and teams handling coding, audits, analysis, and long-running workflows.
How to access it? Claude Opus 5.5 is now available on all platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure. On the Claude Platform, developers can get started with claude-opus-5-5.
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