Even Rivals Prefer Using Claude Code for Real Work
Engineers at Microsoft and OpenAI are reportedly using Anthropic’s 'Claude Code' instead of their own tools. This reveals that the tool is so powerful that even its top competitors find it more useful.
In June 2026, news broke that developers inside Microsoft and OpenAI have been choosing Claude Code to build their software. Even though these companies created famous tools like GitHub Copilot, their own staff found Anthropic's tool more efficient for complex tasks. This situation highlights a major shift in the AI industry, showing that Claude Code has become the gold standard for accuracy and reliability. For solo makers, this is a clear signal that Claude Code is currently the most capable coding assistant on the market.
Key points
- Microsoft and OpenAI staff were caught using Claude Code for their daily tasks.
- The move suggests that Claude Code performs better than the tools these companies sell to others.
- It proves that even AI experts prefer the best tool available, regardless of who made it.
Quick term guide
- engine
- The core software that provides the basic functions for a game to run.
- competitors
- Other businesses making similar products for the same customers.
- developers
- Developers are people who build software, apps, or websites.
- software
- Programs or apps that run on a computer or smartphone.
- GitHub Copilot
- A popular tool that helps programmers write code using artificial intelligence.
- Copilot
- An AI helper that can summarize, compare, and draft work from user-provided information.
- reliability
- How consistently a tool works without failing or behaving unexpectedly.
- liability
- Legal responsibility for causing an accident or damage.