Why Google CEO Sundar Pichai thinks asking 'how much code AI writes' is the wrong question

Instead of focusing on a single percentage, Google is now assessing how AI tools are changing engineers' productivity, the scale of projects they can undertake and the quality of the code they produce.

Google CEO Sundar Pichai has said that measuring the percentage of code written by artificial intelligence (AI) is no longer a meaningful way to assess the technology's role in software development, as AI increasingly influences nearly every line of code shipped by the company.

Pichai previously said that AI generated around 25% of Google's code, a figure that subsequently rose to more than 30%. However, in a recent interview, he indicated that the metric no longer captures the extent to which AI has become integrated into the company's engineering processes.

Instead of focusing on a single percentage, Google is now assessing how AI tools are changing engineers' productivity, the scale of projects they can undertake and the quality of the code they produce.

“What we are tracking with Argon, for example, we are now able to see it’s been a point of inflection. People are using Argon to really go tackle complex projects, including projects which affect millions of lines of code,” he said.

Google's Argon coding agent boosts code submissions

Pichai highlighted Argon, Google's internally deployed coding agent, as a better indicator of AI's growing influence on software development.

“So I think people are writing code more productively and better code with it,” Pichai said. “Nobody would want to code the way they were coding three years ago or even the same time last year.”

According to the CEO, the tool is enabling engineers to move beyond basic code completion and use AI to tackle more ambitious engineering tasks. The shift reflects a broader transformation in how developers interact with AI, with the technology increasingly supporting complex work rather than simply suggesting snippets of code.