Privacy Policy
Last updated: 29 September 2026
The short version: the calculator runs entirely in your browser. Your token counts, model choices and numbers are never sent to us. We have no accounts, no uploads and no server-side storage of anything you type.
What we do not collect
- Your calculator inputs. Input tokens, output tokens, call volume and the model you pick are processed in JavaScript on your device. They never leave the browser and are not transmitted to any server we control.
- Your files. This site does not accept file uploads.
- Accounts. There is no sign-up, no login and no user profile.
What we do collect
Like most websites, we use third-party analytics to understand which pages are useful. These tools may set cookies and record:
- Pages visited, and the referring page or search query that brought you here
- Approximate location (city or country level, derived from IP address)
- Device, browser, operating system and screen size
- Interaction events, such as which calculator controls were used
We use Google Analytics 4 for traffic measurement and Microsoft Clarity for aggregated heatmaps and session replays. Clarity session replays may capture on-page interactions; you can read Microsoft's privacy statement and Google's privacy policy for details.
Advertising
This site is supported by advertising. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the internet.
You may opt out of personalised advertising by visiting Google Ads Settings, or opt out of third-party vendor cookies for personalised advertising at aboutads.info. If you are in the EEA, UK or Switzerland, you will be shown a consent notice before any non-essential cookies are set.
Cookies
| Cookie | Set by | Purpose |
|---|---|---|
ce-theme | This site | Remembers your light/dark preference. Stored locally; never sent to us. |
_ga, _ga_* | Google Analytics 4 | Distinguishes visitors for traffic statistics. |
_clck, _clsk | Microsoft Clarity | Analytics and session replay. |
__gads, __gpi, IDE | Google AdSense | Ad delivery, frequency capping and measurement. |
You can block or delete cookies at any time through your browser settings. Blocking analytics cookies does not affect the calculator — it works with cookies fully disabled.
Children's privacy
This site is a developer tool and is not directed at children under 13. We do not knowingly collect personal information from children.
Your rights
Because we do not hold accounts or store your inputs, there is usually no personal data for us to export or delete. For data held by our analytics and advertising partners, use the opt-out links above or contact those providers directly. If you have a request relating to this site, contact us using the address below.
Changes to this policy
We may update this policy as the site changes. The "last updated" date at the top of this page always reflects the current version.
Contact
Questions about this policy: [email protected]
ClaudeEffort is an independent tool. It is not affiliated with, endorsed by, or sponsored by Anthropic or OpenAI. Product names and prices referenced on this site belong to their respective owners.