One single request to Claude 4 Opus can cost $5,4 at context and completion maxed out. (~5k sats)
Before the request there is no way to estimate the cost so we are required to implement a minimum balance that you need to put in your cashu token to be able to use the model.
This cost varies by model so for example
Gemini 2.5 Flash has a maximum cost of
$0.2 ~180 sats