It seems to position itself as a branch of Mozilla Foundation
Check the footer:
>"Visit mozilla.ai’s not-for-profit parent, the Mozilla Foundation. Portions of this content are ©1998–2023 by individual mozilla.org contributors."
Privacy Policy and ToS redirect to mozilla.org
I saw that, but anyone can link to anything. Luckily on mozilla.org there's a link to mozilla.ai, so that legitimizes it a bit. But that is not obvious.