Google says self-improving AI is distant despite significant code automation

Google engineer Haydn Belfield states that self-improving AI is not yet measurable, even as AI now writes over 75 percent of production code. However, 88 percent of code changes still require human oversight, and the success rate of Argon agent runs sharply drops as task complexity increases. Google's General Capability Index shows Gemini model capabilities growing steadily at about 0.1 GCI points per month, without statistically significant acceleration, which the team attributes to compute and organizational investment, not AI-driven acceleration.