AI isn’t just assisting developers anymore—it’s writing a significant chunk of their code. At Meta’s LlamaCon event, Microsoft CEO Satya Nadella revealed that artificial intelligence now generates 20% to 30% of Microsoft’s internal codebase. He shared this during a fireside chat with Meta CEO Mark Zuckerberg.
Zuckerberg asked how much of Microsoft’s code is written by AI tools today. Nadella responded that the percentage varies by language. AI performs well with Python but shows weaker results with C++. Still, he described the current progress as remarkable.
Microsoft has long been at the forefront of using AI in software development. Tools like GitHub Copilot have already transformed how engineers write code. In fact, Microsoft CTO Kevin Scott has predicted that 95% of code could be AI-generated by 2030.
This shift doesn’t mean human engineers are being replaced. Instead, they’re getting more support. AI takes on repetitive tasks, freeing developers to focus on design, strategy, and problem-solving. Nadella’s comments show how fast this change is happening.
When the same question was turned to Zuckerberg, he admitted he didn’t know how much of Meta’s code is AI-generated. That uncertainty highlights how new and fast-moving this trend still is—even at top tech companies.
Other industry leaders are seeing similar results. Last week, Google CEO Sundar Pichai said that AI now writes more than 30% of Google’s code. However, these numbers aren’t easy to compare. Each company might measure AI-written code differently. Without standard methods, the exact figures are open to interpretation.
Even so, one thing is clear: AI is becoming a core part of the software development process. It’s no longer just a tool for speeding up tasks. It’s changing how code is written from the ground up.
Microsoft’s investment in AI-powered engineering shows no signs of slowing. As tools improve, the quality and accuracy of AI-generated code will only get better. Developers who learn to work alongside these systems could have a big advantage.
This shift marks a major turning point in tech. Code that once took teams hours to write can now be handled by an AI assistant in minutes. And while humans are still in charge, their new co-pilot is doing more of the driving.
