Perplexity uses on-going, practically real-time updating although it’s not refered to as training. I asked questions about the Trump-Biden debate early the next morning and got answers.
That is training. Or it’s just a search engine. LOL.
Sounds a lot like copilot who uses Bing as it’s web scraper to gather information. In fact, it appears they pretty much just copied the copilot free model.