Microsoft CEO reveals 20%-30% of code generated by AI, with progress in Python and challenges in C++

During a fireside chat at Meta’s LlamaCon conference on April 29, 2025, Microsoft CEO Satya Nadella shared that up to 30% of the code within Microsoft’s repositories is AI-generated. This revelation came after Meta’s Mark Zuckerberg asked Nadella about the role of AI in Microsoft’s development processes. The CEO highlighted that the results vary by programming language, with AI making greater progress in Python but facing more challenges in languages like C++. Nadella’s disclosure follows comments by Microsoft’s CTO Kevin Scott, who anticipates that 95% of all code at Microsoft will be AI-generated by 2030. In contrast, Google’s CEO Sundar Pichai had earlier stated that more than 30% of the company’s code is generated by AI. However, the precise methodology behind how Microsoft and Google measure AI-generated code remains unclear, so these figures should be considered approximate. Interestingly, when Nadella posed a similar question to Zuckerberg about Meta’s AI-generated code, the Meta CEO admitted that he did not know the answer. These discussions reflect the ongoing integration of AI in software development and its potential to revolutionize the industry in the coming years.