AI Is Writing Code for Humans: Microsoft and Meta Are Reshaping Software Development

At LlamaCon, a conference hosted by Meta, executives from Microsoft and Meta discussed the growing role of AI in writing software. Satya Nadella revealed that between 20% and 30% of code across Microsoft projects is now generated by AI, with that number steadily climbing. In some cases, he said, AI completes tasks entirely on its own, without any human intervention.

Mark Zuckerberg didn’t give exact figures for Meta, but he did share the company’s ambitious plans: within a year, AI is expected to handle around 50% of the development work for new versions of its Llama models. Other tech heavyweights are seeing similar trends. At Google, for example, AI now writes more than a quarter of all new code. Companies like Shopify and Duolingo are also rethinking their hiring strategies, shifting focus to roles that AI still can’t fully take over.

Industry experts say tools like Microsoft’s Copilot and OpenAI’s development suite are quickly becoming the norm. OpenAI’s recent talks to acquire the startup Windsurf — which builds systems that can generate apps from text prompts — highlight how strong the push toward automation has become.

Forecasts vary: Microsoft CTO Kevin Scott predicts that by 2030, AI could be responsible for 95% of all coding. Zuckerberg offers a more cautious — but still significant — outlook. What’s clear is that AI is already reshaping development, taking over repetitive work but still falling short of replacing human experts, who remain essential for complex and creative tasks.