Glossary
Prompt caching explained
Reusing a previously-sent context prefix instead of paying full input price for it again.
Why it matters for cost
Cache reads cost 0.1x the input rate; the first write costs 1.25x (5-min) or 2x (1-hour).
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 prompt caching?
- Reusing a previously-sent context prefix instead of paying full input price for it again.
- How does it change what I pay?
- Cache reads cost 0.1x the input rate; the first write costs 1.25x (5-min) or 2x (1-hour).
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