Character.AI

Character.AI is a conversational AI platform that enables users to create and interact with AI personas of celebrities, fictional characters, and custom personalities. One of the most-used AI consumer applications with over 20M daily active users.

Founded in 2021 by Noam Shazeer (Google Brain) and Daniel De Freitas, both former Google engineers. Launched in beta in 2022, quickly amassing millions of users. Known for emotional connection features. Faced controversy about AI companion relationships.