Use Content AI to optimise the Post.

Hello,

Thank you for contacting Rank Math, and sorry for any inconvenience caused.

I checked the filter on my local installation and it is working fine.

Please make sure that the filter is added correctly in the functions.php file:

/**
 * Filter to disable Content AI test.
 */
add_filter('rank_math/researches/tests', function ($tests, $type) {
	unset($tests['hasContentAI']);
	return $tests;
}, 10, 2);

You can follow this guide to add the filter:
https://rankmath.com/kb/wordpress-hooks-actions-filters/#functions-php-file

Let us know how it goes.

We are here to assist you.

Hello,

The filter that I shared above should disable that test.

If it is not working on your website, we might need to take a closer look at the settings. Please edit the first post on this ticket and include your WordPress & FTP logins in the designated Sensitive Data section.

Please do take a complete backup of your website before sharing the information with us.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:

https://wordpress.org/plugins/temporary-login-without-password/

You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):

https://wordpress.org/plugins/wp-security-audit-log/

We really look forward to helping you.