Speech-to-text voice use on Instagram Reels and TikTok

I don't know if my question makes sense but I would like to know what software/app/website this voice. I'll use this Reel as an example https://www.instagram.com/p/CxdqxN1Pjqd/

I use a website like https://gesserit.co/tiktok

Maybe this will help who knows.