Install or update the Claude Tuner extension

AI Cross-Check (Beta) runs inside your own browser: the free extension sends your question to every AI you are signed in to and streams the answers here. Install (or update) it and this page connects by itself.

Install the free extension →

Desktop Chrome / Edge only · connects automatically once installed — no refresh needed

This page is only a UI shell that embeds the extension's own compare page. Data handling is identical to the extension — see the Privacy Policy.

Update the Claude Tuner extension

The installed extension is too old for AI Cross-Check (Beta). Chrome updates extensions by itself within a few hours; to update right now, open chrome://extensions, turn on "Developer mode" and click "Update".

Once updated, this page connects by itself when you come back to this tab — no refresh needed

This page is only a UI shell that embeds the extension's own compare page. Data handling is identical to the extension — see the Privacy Policy.

Please open this in Chrome on a desktop

AI Cross-Check (Beta) runs as a browser extension on desktop Chrome / Edge. Open claudetuner.com/multiai in Chrome on your computer to get started.

Mobile browsers don't support extensions.