UsageMeterLink reads the tokens of every Claude Code turn on a computer. Between two readings of Claude’s own gauge, UsageMeter divides the points the gauge moved by the tokens of those turns, one model family at a time, and keeps the low edge of the results, since usage it cannot see only makes the gauge move faster. That gives a ceiling for 100% of the limit; one percent is a hundredth of it.
The page takes the latest value of every account measured in the last 30 days, groups the accounts by the plan Claude reported for them, and publishes the median of a plan only when at least 5 accounts stand behind it. Tokens are input, output, and cache reads and writes.
Each account counts once, whatever its volume. No account, address or exact count is shown: only the range of accounts.