Besides ChatGPT, what are your other favorite paid AI tools? And why do you think it's worth it?

My favorite AI tool is UPDF Editor. AI has become a vital component these days, and UPDF is an AI-powered PDF Editor that supports reading, annotating, editing, syncing, converting, encrypting, signing, and organizing PDFs. This software uses advanced AI capabilities to summarize long PDF texts into shorter, clearer content or explain complex PDF words and paragraphs. I can also translate PDFs to all popular languages with it. You can try it for free now: https://updf.com/updf-ai/

Jasper, lots of features