Short version: the Token Bench browser extension collects no data. Nothing you type is transmitted, stored, or seen by us or anyone else.
Token counting happens entirely inside your browser. The tokenizer is bundled with the extension itself, so counting your text requires no network request at all.
Specifically, the extension:
The only thing the extension stores is which model you chose to price against — a single short string such as gpt-5.4, kept in Chrome's own storage so your preference survives a restart. It syncs across your Chrome profile if you have Chrome Sync enabled, and it is never sent to us.
On the Token Bench website, token counting for OpenAI and open-source models also runs entirely in your browser, and that text is never transmitted.
There is one exception, and it only happens if you explicitly click it: choosing “get exact count” for Claude or Gemini sends that text to our server, which forwards it to Anthropic's or Google's official token-counting endpoint and returns only a number. We do not store the text. Once the count is returned, we retain nothing. Anthropic and Google handle that request under their own privacy policies.
If you use our API, we log standard request metadata (timestamp, approximate size, response status) for abuse prevention and capacity planning. We do not log the contents of the text you submit.
Some links to third-party API providers are affiliate links, labelled as sponsored. If you follow one and sign up, we may earn a commission. Following such a link takes you to that company's own site, where their privacy policy applies. We do not pass any information about you to them, and affiliate relationships never influence the pricing figures or model rankings shown on this site.
Token Bench is a developer tool and is not directed at children under 13.
If this policy changes materially, the date at the top of this page will be updated. Because the extension collects nothing, we don't anticipate changes that would reduce your privacy.
Questions about this policy: REPLACE@YOUR-DOMAIN.com