Ask HN: Why doesn't Ramp AI Index include OpenRouter or other aggregators?

A Hacker News post asks why the Ramp AI Index, which tracks token volume by model maker, mainly shows Anthropic, OpenAI and X, while OpenRouter's rankings show many models. The poster speculates Ramp may be unable to attribute spend routed through aggregators like OpenRouter to specific models, and asks whether any public datasets could help reconcile the two charts.