I built this using openrouter data. An obvious asterisk: not everyone routes their proprietary models through openrouter. The underlying assumption is that the percentage distribution of people routing proprietary models through openrouter did not significantly change in last 3 months.

About 3 months ago, the ratio was 60-40 in favour of Proprietary models, today it is exactly the other way around. The absolute token consumption increased for both: Proprietary models went from 1.3T tokens to 2.38T tokens. OSS jumped from 0.89T tokens to 3.57T tokens. So the growth of Proprietary models look astounding in isolation still