Track token usage and context window space in ChatGPT. Supports all models: GPT-4o, GPT-4.5, and more.
Users
1,000
+26 in 30 days
Rating
3.6 / 5
−0.10 in 30 days
Ratings
7
+1 in 30 days
Store rank
#28K
#23K among extensions
Version
1.1.0
updated 22 Apr 2025
Users
monthly, 1 years
Latest, 16 Oct 2026:1,000 usersMove the mouse over the chart for any month
Ratings count
monthly, 1 years
Latest, 16 Oct 2026:7 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About TokenScope - ChatGPT Token Counter
TokenScope - ChatGPT Token Counter & Context Window Tracker
TokenScope is a lightweight Chrome extension that displays your current token usage and remaining context window directly inside the ChatGPT web UI.
Features:
- Live Token Counter: See how many tokens you've used and how many are left, right above the ChatGPT message input.
- Accurate Tokenization: Uses OpenAI's official tokenizer for precise token counting that exactly matches the ChatGPT API.
- Automatic Model Detection: Instantly detects which ChatGPT model you're using (including GPT-4o, GPT-4o with scheduled tasks, GPT-4.5, GPT-4o Mini, o3, o4-mini, and o4-mini-high) and adjusts the counter accordingly.
- Supports All Major Models: Works with all current ChatGPT models, including new variants as they're released.
- Visual Indicators: Color changes when approaching token limits to help you avoid hitting the maximum.
- Seamless Integration: Blends into the ChatGPT interface with a clean, user-friendly design.
- No Personal Data Collection: TokenScope does not collect or transmit any personal data.
Why install TokenScope?
- Avoid exceeding model limits and losing conversation history.
- Instantly know if your prompt or conversation is getting too long.
- Get exact token counts that match what OpenAI's API actually uses.
- Great for power users, researchers, and anyone who wants to get the most out of ChatGPT.
Keywords: ChatGPT token counter, context window tracker, OpenAI tokens, GPT-4o, GPT-4, token limit, token usage, chat history, AI token counter, ChatGPT extension, token calculator, context window size
OpenAI and ChatGPT are trademarks of OpenAI. This extension is an independent project and not affiliated with OpenAI.
Growth
Window
Users
Change
Ratings
Rating
7 days
+10
+1.0%
0
0.00
30 days
+26
+2.7%
+1
−0.10
6 months
+636
+174.7%
+2
−0.63
1 year
+754
+306.5%
+3
−1.43
Chrome Web Store search rankings
Where TokenScope - ChatGPT Token Counter appears when people search the store, with the 30 day change