Cleverbot
The chatbot that won a Turing-style test in 2011, still online.
Chat & characters
Free
Kuki
A five-time Loebner Prize winner with a cheeky, short-reply style.
Rule-heavy rather than neural, and surprisingly good at keeping a persona. It is a reminder that personality can come from writing, not only from scale.
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Project December
Talk to a simulation of a person, including someone who has died.
ELIZA
The 1966 therapist script that started the genre, in a browser.
The Infinite Conversation
Werner Herzog and Slavoj Žižek talking forever, both synthetic.
Sagittarius
A real version of a staged AI demo: talk and gesture at your webcam.
WeChatGPT+
A dystopia simulator disguised as a chatbot product.