Observed arrival · 2026-09-04

Wrong Numbers Finds the Bugs Hiding in LLM Bills

wrong-numbers.dev Observed source

Editorial interest 88/100 Selection signal · not a rating of the site

An audit practice checks LLM cost accounting and evaluation code against provider invoices or known-answer tests.

Landing page captured for the 2026-09-04 issue.

Field notes

Wrong Numbers compares the usage objects flowing through provider adapters, aggregators, streaming paths, and telemetry with invoices or known-answer tests. The page reports 24 merged fixes across 13 organisations, including a cache-token error that turned a 100-token request with 75 cached tokens into a reported total of 175. Its deliverables include failing pre-fix tests, pull requests, reconciliation findings, and a CI gate.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

$PaidCommerce or pricing visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

◉HumanPersonal, local, civic, or handmade

One card from the complete issue

An Octave Below the Spacecraft

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