Character.AI was founded in late 2021 by former Google engineers Noam Shazeer (co-author of the Transformer paper) and Daniel De Freitas. In September 2022, the company reached unicorn valuation with a $150 million funding round, claiming at the time that users exchanged over 2 billion messages with its bots within five months, with active users spending over 2 hours per day—these early figures were the company's own claims at the time.
In May 2023, the Character.AI app surpassed 1.7 million installs in its first week. In August 2024, Google licensed the startup's model for $2.7 billion, and Shazeer and De Freitas returned to Google. By October 2024, the platform had 20 million monthly active users.
Last June, the company appointed former Brex and Meta executive Anand as CEO and expanded its product to AI video generation and a social feed. But these adjustments failed to change the sustainability problem—the company ultimately still headed toward bankruptcy filing.