Top engineers at Anthropic, OpenAI say AI now writes 100% of their code | Fortune
the race to 100% ai generated code

Still, outside the leading AI labs, the figures for AI-generated code reported by many software companies is significantly lower. For instance, Microsoft CEO Satya Nadella said in April 2025 that AI was generating about 30% of code at the software giant. Salesforce has given out a similar figure. A study published in the journal Science earlier this month looked at GitHub Python functions and found that about 29% in the U.S. are now AI-written, with lower percentages in other geographies.

I think it’s probably trivial to use AI to generate and re-generate all of your code.

As the saying goes. not everything you measure matters and not everything you can measure translates to impact.


Quote Citation: Beatrice Nolan, “Top engineers at Anthropic, OpenAI say AI now writes 100% of their code | Fortune”, January 29, 2026, 2:47 PM ET, https://fortune.com/2026/01/29/100-percent-of-code-at-anthropic-and-openai-is-now-ai-written-boris-cherny-roon/