Summary: paid search engine Kagi has released a limited-use free trial. Despite what the title and the bolded text implies, the search engine has not become consistently usable free of charge. After 50 searches, you need to create an account, and after 100 more searches, you need to pay for a subscription. There is no indication that you can ever use the service for free again after those 150 searches.
The “for everyone” is technically true, but practically meaningless. In the long term, the type of person who finds the subscription price too high to pay will still be unable to search with Kagi.