TL;DR Google’s internal AI coding agent, Agent Smith, now generates over 25% of the company’s new production code. Unlike autocomplete tools like Copilot, Agent Smith works asynchronously in the background, writing, testing, and iterating on code without human interaction. For API teams, this raises questions about contract stability, test coverage, documentation drift, and review workflows when a quarter of your codebase is machine-generated. Try Apidog today Introduction During a March 2026 earnings call, Google CEO Sundar Pichai shared a number that caught the software industry’s attention: AI-generated code now accounts for more than 25% of new code produced at Google. This is not autocomplete. It is not a developer accepting Copilot suggestions line by line. This is code generated by an AI agent, reviewed by humans, and shipped to production. The internal tool behind it is called Agent Smith, a nod to the self-replicating antagonist from The Matrix .…