Neither, it seems. The blog post says "Send up to N messages per day", but the FAQ (https://cerebras-inference.help.usepylon.com/articles/346886...) says:

> How do you calculate messages per day? Actual number of messages per day depends on token usage per request. Estimates based on average requests of ~8k tokens each for a median user.

So seems there is a token limit? But they're not clear what exactly that is? Haven't tried to subscribe, just going by public information available.

Logically it can only be API call based, as you bring your own IDE plugin. So there's no possibility it's based upon any UI level concept such as top level messages. The subscription wouldn't even necessarily know.