Claude Opus 5: The System Card

Claude Opus 5 is a direct upgrade path for the orchestrator currently running Opus 4.5, potentially improving agent delegation quality, reasoning reliability, and tool use across all 20+ apps. The system card details would inform prompt engineering improvements for the rails-expert, test-engineer, and investigator agents, particularly around LLM reliability patterns. Reviewing capability changes and safety characteristics is essential before upgrading the orchestrator to avoid regressions in automated testing or deployment workflows.