ContextMeter – AI Context Window & Token Counter

Name: ContextMeter – AI Context Window & Token Counter
Author: ContextMeter

Chrome extension by ContextMeter · Productivity · Tools

A Chrome extension in Productivity · Tools with 5 users, barely installed.

Specific sites only: 2 match patterns.

What the developer says, and 3 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users: 5
Rating: not rated yet
Users, last 2 days: +5
Version: 1.0.0
Updated in the store: 2026-10-09
Published: 2026-10-09
Manifest: V3
Browser access: 1 permission, 2 site patterns

How it has moved

Last 30 daysLast 90 days

Users

+5 since 10.10

0-5 · 2 readings

2026-10-100appeared in the store
2026-10-115

Users

+5 since 10.10

0-5 · 2 readings

2026-10-100appeared in the store
2026-10-115

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 2 match patterns.

https://chatgpt.com/*
https://claude.ai/*

Store data in your browser storage

The full permission history for this extension

What changed recently

2026-10-10Appeared in the store

The publisher

ContextMeter. Listed website: contextmeter.app.

Like this one

Listings the catalog judges closest in what they say they do.

Tokeny Describes nearly the same job, smaller audience 19 users
ChatGPT Context Counter Describes nearly the same job, smaller audience 13 users
AI Chat Context Window Describes nearly the same job, smaller audience 13 users ★ 1.0
Context Window Meter for ChatGPT Describes nearly the same job, smaller audience 50 users
ContextPulse — ChatGPT Thread Health Describes nearly the same job, smaller audience 9 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Markdown

[![Users and rating on Ext Ops Panel](https://extops.dev/extensions/ndginklnhddfjbahepemmmlonigciefb/badge.svg)](https://extops.dev/extensions/ndginklnhddfjbahepemmmlonigciefb)

HTML

<a href="https://extops.dev/extensions/ndginklnhddfjbahepemmmlonigciefb"><img src="https://extops.dev/extensions/ndginklnhddfjbahepemmmlonigciefb/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on 2026-10-11. The store last changed these figures on 2026-10-11. We publish no contact details for extension developers.