Opus 4.8 Available Same-Day on GitHub Copilot — Microsoft Sells Anthropic's Model While Banning It Internally

GitHub Changelog·medium signal

GitHub Copilot added Claude Opus 4.8 on May 28, the same day as Anthropic's launch — while Microsoft simultaneously cancels internal Claude Code licenses for its own engineers. The contradiction highlights the tension in Microsoft's dual role as both an AI platform vendor (reselling Anthropic via GitHub/Azure) and a competitor (pushing Copilot CLI over Claude Code). Developers now get the latest Opus through the very platform Microsoft is forcing internally.