Best for
Privacy-minded chat, fast summaries, and lightweight multi-model comparison without a heavy setup flow.
Duck.ai is a useful privacy-first chat option when you want quick access to multiple models without an account-led workflow.
Best for
Privacy-minded chat, fast summaries, and lightweight multi-model comparison without a heavy setup flow.
Main limit
The free version has daily limits, and higher limits are reserved for DuckDuckGo subscribers.
Why it is listed here
DuckDuckGo presents Duck.ai as a free AI chat feature with daily usage limits, making it one of the clearer low-friction chat options.
How quickly you can start chatting versus more account-led tools
Whether the daily limit is enough for your task
How much you value Duck.ai's privacy position over broader product features
Gemini Apps
Instant (No signup)Google says some Gemini web features can be used without signing in, making it one of the stronger guest-first options in mainstream AI chat.
Perplexity
Requires signupPerplexity remains strong for source-backed answers, but the current web path can require login earlier than a reliable no-signup recommendation should promise.
ChatGPT
Partial (Limit before login)ChatGPT sometimes offers lighter-weight guest access, but the first-use path is less predictable than the clearest guest-first options.