[WiSaGaN]

I am wondering why it would price them in characters but not tokens? Are they processing characters directly as tokens without tokenizer?

[abeshkek919]

Maybe because it's easier this way to estimate the data size before you send it to the API.

[WiSaGaN]

I am not sure about that. You are already using API, should be trivial to use a tokenizer to get the number. Also prompt is just minor part of the cost. You have much less control in the completion part, which is the majority of the cost.