https://www.battleswarmblog.com/wp-content/uploads/2026/06/AICandleCove.jpg
There’s a phrase in enterprise software: “Eat your own dog food.” It means you should be using the software you’re developing internally, because you find bugs more quickly that way.
Evidently Microsoft developers prefer the taste of Anthropic’s Claude over their own Copilot AI slop.
Last year, Microsoft CEO Satya Nadella revealed that the company writes up to 30% of its code using generative AI. As it now happens, Microsoft is reportedly planning to reduce the use of Anthropic’s Claude Code — a move designed to push its employees toward GitHub Copilot CLI.
For context, The Verge’s Tom Warren reported that Microsoft started opening access to Claude Code for its employees in December, including developers, project managers, and designers, allowing them to interact and experiment with the AI-coding assistant directly in their workflows.
Warren reports that Claude Code gained vast popularity among Microsoft employees over the past six months, which has seemingly led to a pullback on its Claude Code push in favor of its own GitHub Copilot CLI. “While Claude Code has been a popular addition, it has also undermined Microsoft’s new GitHub Copilot CLI coding tool,” Warren explained.
According to Warren’s sources, Microsoft’s Experiences + Devices division, which includes teams working on Windows, Microsoft 365, Outlook, Teams, and Surface, is supposed to stop using Claude Code by the end of June. These teams are expected to transition their workflows to GitHub Copilot CLI over the next few weeks.
The report reveals that the decision isn’t centered on Microsoft pushing its staffers towards its own offering — there are some financial implications at play, too. Microsoft’s financial year is expected to end on June 30, which means canceling Claude Code licenses for its employees could cut its operational costs as it transitions into a new financial year.
While speaking to The Verge, Microsoft’s VP of experiences and devices group, Rajesh Jha, indicated:
“When we began offering both Copilot CLI and Claude Code, our goal was to learn quickly, benchmark the tools in real engineering workflows, and understand what best supported our teams. 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.”
It’ll be interesting to see how the transition from Claude Code to GitHub Copilot CLI is received, especially since the vast majority seems to favor the former. The company’s initial plan was to have its engineers use both offerings concurrently, to compare their capabilities, and to provide feedback.
Interestingly, Microsoft staffers have seemingly preferred Claude Cove over GitHub Copilot over the past few months, primarily because of the feature disparity between the two products.
I wondered if “Claude Cove” was a typo, but no, it’s apparently a real thing.
An opportunity for a really obscure meme.
These sorts of stories pop up again and again: Everyone who is forced to use Copilot seems to hate it. Claude doesn’t seem to generate the same level of loathing, maybe because Anthropic doesn’t have the same opportunities Microsoft does to shove it down the throats of its existing users.
Now we know that Microsoft’s Devs, just like its users, seem to prefer the taste of other people’s dog food over Microsoft’s…
(Hat tip: Clownfish TV.)
Lawrence Person’s BattleSwarm Blog