🪨 Caveman Cost Lab
compare Claude models & see how much
caveman mode
cuts your token bill · BYO key · 100% in your browser
forget key
Your key lives in
localStorage
and goes nowhere but Anthropic. No server, no analytics — read the source.
System prompt (optional)
Prompt
Explain how HTTP caching works, with examples.
Models to compare
Compression
None (normal prose)
🪨 Caveman (terse)
Effort (Opus/Sonnet)
default
low
medium
high
Max tokens
compare vs baseline
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