OpenAI has released ChatGPT search to the world as part of its Christmas-themed launch extravaganza.ChatGPT search was previously available to ChatGPT plus subscribers and waiting list user, and now everyone can use it.An AI search engine differs from a conventional search engine, like Google, in a few key ways.Perplexity is perhaps the original AI search engine, ChatGPT is the new one, and both have some differences.Both search engines initially recommended restaurants that were in the nearest city in the query.Perplexity gives you more information making it feel more fleshed out while ChatGPT search results are complete.The writer recommends Perplexity over ChatGPT, but both search engines produced similar results in terms of the sources found.