AI Chat No Sign-Up: 3 Bots Answered Logged Out [2026]

Most people who search for AI chat with no sign up want one thing: type a question, get an answer, skip the account form. In one independent logged-out test reported on October 27, 2026, ChatGPT, Gemini and Perplexity answered a prompt without an account, while Grok and Copilot asked for a sign-in first. That split decides which tool fits a borrowed laptop, a library PC or a quick lookup on a phone you do not want to link to your email. OpenAI’s own pricing page still lists Free, Go, Plus and Pro tiers, so the free door exists, but it sits right next to a paywall.