Privacy Policy

1. 100% Client-Side Local Evaluation Guarantee

The LLM Token Cost Calculator & Tool Call JSON Validator operates strictly inside your client web browser. All token calculations, character density analyses, JSON Schema formatting, and syntactic validations are evaluated entirely in client-side JavaScript.

Zero Telemetry Commitment: None of your input text, system prompts, function definitions, proprietary schemas, or custom budget numbers are transmitted to, logged on, or analyzed by any external server or API endpoint.

2. Third-Party Vendor Services & Advertising Cookies

To sustain free access and cover domain infrastructure hosting costs, this site may display non-intrusive advertisements served by third-party advertising networks, such as Google AdSense.

Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites on the Internet:

• Google's use of advertising cookies enables it and its partners to serve personalized ads to users based on their navigation history.
• Users may opt out of personalized advertising at any time by visiting Google Ads Settings.
• Alternatively, you can opt out of a third-party vendor's use of cookies for personalized advertising by visiting aboutads.info.

3. Local Storage Data Retention

This application uses modern browser HTML5 Local Storage (localStorage) solely for:

• Persisting your preferred color scheme (Dark Mode vs. Light Mode).
• Persisting user-defined custom pricing models created in the "Add / Edit Custom Model" dialog.

This data remains solely on your local device storage. You can purge this data at any time by clearing your browser cache or clicking "Reset Custom Models" inside the calculator.

4. Contact Information & Data Subject Rights

If you have questions regarding this Privacy Policy, please reach out to our open-source maintainers through GitHub Issues:

Feedback: GitHub Issues
GitHub Repository: https://github.com/huyongbo668881985/tokens