Local-first Chrome, Edge, and Firefox extension

Understand ChatGPT and Codex usage at a glance.

ChatGPT & Codex Usage Tracker adds visible-token estimates, next-send estimates, allowance renewals and alerts, trends, and privacy-safe diagnostics directly to ChatGPT and a compact extension popup.

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Before-you-send estimates

See visible conversation length and estimated next-send input size, including before the first message.

Allowance and renewals

View first-party Codex percentages and countdowns, with an optional alert when weekly quota renews—even before its reported date.

Local history

Keep numeric message and token trends in browser-managed local extension storage with JSON/CSV export controls.

Transparent controls

Choose the page position, configure quota and renewal alerts independently, and inspect privacy-safe diagnostic logs.

Before installing: visible ChatGPT communications and website content are processed temporarily to calculate estimates but are not stored. Authentication information is used only for first-party ChatGPT allowance requests. Chrome classifies this local processing as data handling, but no data is sent to KC-IT or the developer.

Honest about accuracy

ChatGPT does not expose all hidden context or a supported complete per-message usage API to browser extensions. Local visible-text token figures are therefore labelled estimates. Codex percentage and renewal values are first-party values when available, and weighted allowance is never converted into a token ceiling.

The extension only reports usage. It does not bypass, reset, automate around, or modify ChatGPT/Codex limits or other platform safeguards.

Independent and unofficial

This project is not affiliated with, endorsed by, or sponsored by OpenAI. ChatGPT, Codex, and OpenAI are trademarks of their respective owner.