After many discussions and thinking, we concluded that our pricing policy is too complex, so we need to simplify it. As different APIs have different complexity, we've counted API requests by API type. But it looks like this brings more questions than answers.
Starting from 01.01.2021, we have a Pricing based on credits. We also have more Pricing plans, so you have more options to choose a pricing plan corresponding to the API usage. Did we increase prices? No! In general, the prices should stay the same or become lower.