[Bug] Incorrect token usage calculation for Max Plan sessions

Question

**Bug Description**
Hello,

I believe there may be a bug in the token usage calculation for the Max Plan.

During a single conversation session, my usage suddenly reached 55% within just a few minutes, which seems unusually high for the amount of interaction that occurred.

This makes me think the token counting or session usage calculation might be incorrect.

Could you please check if there is an issue with the usage tracking for my account?

Thank you.

**Environment Info**
- Platform: win32