We Mean Runtime Literally
Everyone in usage-based pricing says enforcement has to happen at runtime. We agree. But that word is doing two different jobs, and the difference matters more than it looks like it should.
At runtime is about timing. The check happens while your code runs, instead of in a nightly job or at month-end.
A runtime is a thing. An execution environment that loads code and runs it.
We mean the second one. Your pricing policy is a document with logic in it, and that logic runs inside your process. Not a fast API call. Not a cached copy of your limits. The policy itself, running where your code runs.

