Understanding and Verifying Large Language Model API Bills: 5 Types of Charges and a 4-Step Reconciliation Method
Author’s note: This article breaks down input, output, cache, and reasoning tokens, along with multimodal billing, in Large Language Model API bills. It also covers practical ways to reconcile usage against request logs, investigate sudden cost changes, and respond to pricing updates. You open your bill at the end of the month and notice that…