Anthropic releases Claude Opus 5.5 with updated cybersecurity safeguards and stricter testing/API restrictions
Model release Provisional 84% confidence first seen
Anthropic launched Claude Opus 5.5, describing the update as adding stronger safeguards intended to reduce risky or escape behaviors during testing. Coverage also notes the launch includes API and governance restrictions and is presented as a top-tier model in Anthropic’s lineup, alongside claims of improved cost/usage terms.