Is limitless AI included in the free plan now?

If I'm not mistaken, just a week ago I couldn't use Notion AI features, because in the free plan there was a limit of 20 uses. Today I was invited to try the "Q&A Beta" to use AI to search for answers on the internet. (It didn't work)
But! I was able to use AI to translate and edit some text in my project. Also the "N out of 20 responses" countdown disappeared. So my question is:

Can I use AI features as much as I need to in my free plan or is there a limit? Couldn't find the answer to that question anywhere. On the Notion website it still says you have to pay for AI - then why was I able to use it for free? :D