- Microsoft engineers have until June 30 to switch from Claude Code to GitHub Copilot CLI
- Ties to GitHub mean Microsoft can adapt Copilot CLI to its own needs
- Claude models will continue to be available in Copilot CLI and other AI tools
Microsoft is reportedly canceling most of the Claude Code license it uses internally, even though the Anthropic tool has become a hit among both workers and the broader community.
The use of Anthropic licenses may come as a surprise given the company’s extensive history with OpenAI and its investments in OpenAI, but that could be about to change as the company shifts direction to push its own alternative.
Engineers are now required to use GitHub Copilot CLI, and users have a deadline of June 30, 2026 to remove Claude Code from their workflows.
Microsoft tells engineers to use GitHub Copilot CLI, not Claude Code
Although the company has not publicly explained the reasons for its decision, the June 30 deadline aligns with the end of Microsoft’s fiscal year. Switching to a company-owned alternative could result in huge cost savings.
GitHub Copilot CLI would offer tighter integration with Microsoft repositories and better alignment with its own enterprise security expectations, as Microsoft could effectively tailor GitHub to its own needs.
“Claude Code was an important part of that learning,” explained executive vice president Rajesh Jha (via The edge). “At the same time, Copilot CLI has given us something especially important: a product that we can help configure directly with GitHub for Microsoft repositories, workflows, security expectations, and engineering needs.”
As for Claude Code, it seems that Anthropic’s alternative has proven to be a big hit with workers. Developers reportedly prefer it to Copilot CLI, and even non-engineers have started testing it. Microsoft had previously encouraged employees with limited coding knowledge to experiment with Claude Code.
Although GitHub will be the preferred ecosystem in the future, Claude models will still be available through the Copilot CLI. In fact, the company has a growing partnership with Anthropic that even offers Claude models through consumer-facing Copilot and M365 features, as it looks to diversify following a partial move away from OpenAI.
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