[extesy]

From https://openrouter.ai/docs/faq#how-do-i-get-billed-for-my-us...

> We pass through the pricing of the underlying providers; there is no markup on inference pricing (however we do charge a fee when purchasing credits).

[freedomben]

Thanks that is helpful, although even that only says they charge a "fee" for purchasing credits and then links to this page[1], which isn't very straightforward

[1]: https://openrouter.ai/terms#_4_-payment