ChatGPT Token Counter by Burak Unver

5 Stars out of 5

ChatGPT Token Counter version history - 4 versions

Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Latest version
Version 2.0.0
Released 7 May 2026 - 1.28 MB
Works with firefox 58.0 and later
- Update tokenizer to gpt 5.x series
- Fix counting error
Source code released under All Rights Reserved
Download Firefox and get the extension
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Older versions
Version 1.3.0
Released 2 Jan 2026 - 1.21 MB
Works with firefox 58.0 and later
v1.3.0 : Added character option to counter
Source code released under All Rights Reserved
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Version 1.1.1
Released 31 Aug 2025 - 1.21 MB
Works with firefox 58.0 and later
Improved stability and mounting in the chatgpt website.
Source code released under All Rights Reserved
Download file
Version 1.1.0
Released 19 May 2025 - 1.21 MB
Works with firefox 58.0 and later
Source code released under All Rights Reserved
Download file