Chatterclock — a ChatGPT message tracking extension icon

Chatterclock — a ChatGPT message tracking extension

by Josh Staiger

v1.44 Updated Aug 13, 2025 92.28KiB
CWS
5K
Users
★ 4.35
48 reviews
#6419
of 120.9K
workflow
#1857 of 18.6K
⚠️Requests 1 sensitive permission

Description

ChatGPT limits the number of messages you can send to certain models (gpt-5, gpt-5-thinking) over certain periods of time. The ChatGPT UI tells you when you’ve exceeded your quota, but doesn’t tell you exactly how many messages you‘ve sent. This extension tracks how many messages you‘ve sent to each model over a period of time — one week gpt-5-thinking; and three hours for gpt-5, to help you judge how close to the limit you might be.
Chatterclock — a ChatGPT message tracking extension screenshot 1Chatterclock — a ChatGPT message tracking extension screenshot 2

Reviews (8 cached)

★☆☆☆☆2024-05-03
Joaquin Achurra

Does nothing, uninstalled immediately.

★☆☆☆☆2024-01-20
Felix Olszewski

does not work, very inaccurate for me (example: number 18 displayed, but cap reached.). frustrating

★☆☆☆☆2023-10-26
Cvu Leua

time rule is wrong

★★☆☆☆2024-05-03
Chris Hide

I believe the cap is now at 20 messages, yet the extension is still showing 40.

★★☆☆☆2024-04-18
Fost

it can not track when using explore GPT

★★★☆☆2024-12-20
BJ Christie-Johnston

Doesn't work with /reason for o1 model, thinks that it's a 4o prompt. Counts if the full chat is in a given model.

★★★☆☆2023-12-12
Jaaziel do Vale

I see the last time this extension was upgraded was on October 27th. So the limit isn't 50 anymore, it's 40. My extension shows "50 left" even though I reached my limit already.

★★★☆☆2023-12-08
Jacqui Mobile

I went over my limit and Chatterclock said I still had 17 left. As of December 2023 ChatGPT4 is using 40 for the limit, so if this is programmed for 50 that might be the issue. Thought I could consider 10 as my zero, but there still an unexplainable odd number left and the times are different in Chatterclock and what ChatGPT is telling me. I'm giving 3 stars instead of 2 because it has potential and was easy to use. (Also, there was that whole Sam Altman issue...so things are a little wonky.)

Permissions (3)

Permissions

alarms Can schedule periodic background tasks storage Can store data locally in your browser webRequest Can observe and analyze network traffic

Details

Version 1.44
Updated Aug 13, 2025
Size 92.28KiB
First Seen Mar 28, 2026