Claude Opus 5.5 Is in GitHub Copilot: What Changes?

GitHub has announced Claude Opus 5.5 in GitHub Copilot. This explainer breaks down the documented availability, supported Copilot surfaces, plan and administrator controls, usage-based billing, text watermarking, early-testing claims, and the review steps that still matter before generated code reaches production. 00:00 The announcement behind the headline 11:25 What has actually changed Sources: https://github.blog/changelog/2026-09-22-c... https://docs.github.com/en/copilot/referen... Production: original editorial graphics and an AI-generated narration voice. Examples are illustrative, not measured benchmarks.