Glossary
Notional vs real cost explained
Whether a dollar figure is what you actually spent or what usage would cost at list prices.
Why it matters for cost
Claude Code cost is computed from real per-token counts; Codex is a subscription, so its $ is notional list price.
How JP the Cat surfaces it
JP the Cat reads the real token counts behind this from the local logs on your Mac and prices them at the shipped rates — so it shows up in your actual cost, not an estimate.
Common questions
- What is notional vs real cost?
- Whether a dollar figure is what you actually spent or what usage would cost at list prices.
- How does it change what I pay?
- Claude Code cost is computed from real per-token counts; Codex is a subscription, so its $ is notional list price.
See it in your real numbers
JP the Cat prices your actual local usage at the shipped rates — not an estimate.
Download MeowPrefer Homebrew? Install the same signed, notarized app from JP's public tap.
brew tap 8bittts/jpthecat
brew trust 8bittts/jpthecat
brew install --cask jpthecat