Organisation · lab · US

Character.AI

A consumer platform that lets people chat with and design AI "characters" with distinct personalities, widely used among younger users.

10 entries · September 2022 – January 2026

Character.AI is a consumer platform, opened to the public in 2022, that lets people chat with — and design their own — AI "characters" with distinct personalities, from historical figures to original creations. It was founded by two engineers who had left Google, Noam Shazeer, a lead author of the transformer paper, and Daniel De Freitas, who had led work on Google's early conversational models, and it grew into one of the most-used chatbot services, especially among younger users. In 2024 both founders returned to Google in a licensing-and-hiring deal reported at around $2.5 billion that effectively unwound the company they had built. It has since become a focal point in the debate over AI companionship and teenagers: facing lawsuits over the deaths of young users, it ended open-ended chat for under-18s in late 2025.

Category
Agents & applied AI
Founded
2021
HQ
Menlo Park, US

Tracks

  • Courts & copyright 6
  • Culture & impact 6
  • Security & misuse 2
  • Government & policy 1
  • Money & business 1
  • Labs & people 1
  • Models & capabilities 1

Also mentioned in 7 entries

Referenced in passing — Character.AI isn't the main subject of these.