Today · post October 11

Karpathy puts frontier coders at 20M; it's napkin math

Andrej Karpathy, former head of AI at Tesla and a founding member of OpenAI, roughly estimates that about 20 million people worldwide, about 0.2% of the population, use frontier models for math and programming work; he says the two sides arguing about how capable AI is are on different tiers. He calls it napkin math: about 6 billion people have barely touched a large language model; about 1 billion to 2 billion use free tiers lightly; about 20 million use frontier models for math and programming work and have watched a weeks-long project get done by AI from one instruction; and about 5,000 people have access to labs' internal frontier systems (Andrej Karpathy, 2026-10-11). He traces the gap to three things: how big a problem you're trying to solve; how unevenly AI's ability is spread, concentrated in digital, verifiable, valuable domains; and which tier of model you can reach. By his account, "it's just a chatbot" and "human review can no longer keep up" can both be true. There's no census of these tiers, and outsiders can't check the claims about the top one. When you hear people argue about AI capability, first ask which tier of model they use and what kind of problem they work on. How we checked →

Concept illustration of a two-storey building shown in cross-section: on the upper floor at right, a short-haired person in black sits on a chair at a desk typing on a reddish-brown-framed laptop whose screen shows a speech bubble and two columns of lines, in front of a pale pink wall. On the floor below, a long-haired person in a brown jacket sits with legs crossed on a beige sofa at left using a laptop whose screen shows a speech bubble, while to the right a low brown cabinet stands beneath a framed picture of a grey half-round shape.

Source and checks

This item ran in the brief of Oct 12, 2026, alongside 13 other items. How we checked it, the quote checks and what was still missing that day are on that issue's How we checked page.

Cite this item

SecondSource (2026). "Karpathy puts frontier coders at 20M; it's napkin math." https://secondsource.io/en/expert/2026-10-12-1/. Accessed access date.