Hello,
I don't know how long this will last but right now you can use Perplexity playground with no cost and you don't have to sign up or log in. Perplexity does not advertise this page and few know about it. Perhaps that is why it's still free. I am certain this won't last forever, so if yo want to give it a try this is your chance.
https://playground.perplexity.ai/
All 5 of there models are there. 2 search and 3 reasoning. They are pretty good, too IMHO.
That's all for now.
Pat