Microsoft phases out Claude Code, pivots internal developers to GitHub Copilot CLI

Microsoft has initiated the cancellation of most internal licenses for Anthropic’s Claude Code, directing thousands of developers within its Experiences + Devices team to transition to GitHub Copilot CLI by 30 June 2026. The move marks a strategic consolidation around Microsoft’s own agentic command line interface, a shift that sources indicate is driven by both the need to tailor tools to specific security and engineering requirements and a desire to reduce operating expenses for the new financial year.

Although Claude Code proved highly popular among engineers over the past six months, including those without prior coding experience, its widespread adoption has reportedly undermined Microsoft’s push for its proprietary GitHub Copilot CLI. Microsoft first opened access to Claude Code in December, inviting project managers and designers to experiment with coding, but internal usage has increasingly favoured Anthropic’s tool over the GitHub alternative.

Rajesh Jha, executive vice president of Microsoft’s Experiences + Devices group, stated in an internal memo that the initial goal was to benchmark tools in real engineering workflows. “Claude Code was an important part of that learning… at the same time, Copilot CLI has given us something especially important: a product we can help shape directly with GitHub for Microsoft’s repos, workflows, security expectations, and engineering needs,” Jha said.

The June 30 deadline coincides with the end of Microsoft’s current financial year, suggesting the license cancellations serve as a mechanism to cut costs ahead of the new fiscal period. Microsoft is now encouraging developers to file bug reports and feedback on Copilot CLI to address existing gaps, with plans to invest further in deep integration into its own engineering workflows.

Despite the internal shift away from the standalone Claude Code application, Microsoft’s broader commercial relationship with Anthropic remains intact. Anthropic’s models, including Claude Sonnet 4.5 and Claude Opus 4.1, will continue to be accessible through Copilot CLI, alongside internal Microsoft models and OpenAI’s offerings. This ensures that existing agreements, such as the November deal for Microsoft Foundry customers and the integration of Claude Cowork technology into Microsoft 365 Copilot, are unaffected.

Microsoft had previously reported that 91 per cent of its engineering teams were using GitHub Copilot, a figure that has been impacted by the surge in Claude Code usage. The company is now focused on reversing this trend, with Jha emphasising shared accountability between GitHub and Experiences + Devices leadership to make Copilot CLI the premier agentic coding experience for its engineers.