I'm a fan of some chinese models, but I keep seeing this repeated over and over using OpenRouter as the source. However, most users of Claude and OpenAI don't use those APIs over OpenRouter, so that's not sufficient to draw the conclusion that they're the top models.

>most users of Claude and OpenAI don't use those APIs over OpenRouter

All of the other providers in that list have their own APIs and plans too

Unless GCP/Azure/AWS/individual companies publish data themselves, this is the best available public data source we have.

Best available does not mean “not actively misleading”, which it obviously is.

OpenRouter is not remotely close to a representative source for inference distribution.

Sure, but the statement you made is way stronger (more general) than the one the data shows.

"Best available public data source" isn't a good reason to insist on using irrelevant data to draw conclusions like "top 5 models by token consumption are Chinese/open models".

another source is opencode and they have geographic breakdown.

https://opencode.ai/data/

It's been a while since Sonnet 4.5 could be considered frontier :D

Where did you find that it is based on sonnet? While I wouldn't be surprised, I'm curious if that is disclosed somewhere

It's mentioned a lot I'm discussions about what bob uses, but there has never been a concrete statement as far as I can tell.