Character.AI
AI is a platform that lets users create and chat with AI-powered characters — from original personas to fictional or public figures — each with its own personality, backstory, and conversational style, powered by large language models.
Definition
Character.AI is a platform that lets users create and chat with AI-powered characters — from original personas to fictional or public figures — each with its own personality, backstory, and conversational style, powered by large language models.
Overview
Founded in 2021 by former Google AI researchers, Character.AI built its product around persona-driven conversation rather than a single general-purpose assistant. Users can chat with characters created by other users or design their own, defining a character's personality, background, and conversational tone, which the underlying language model then maintains throughout a conversation. The platform has become especially popular for open-ended roleplay, companionship-style chat, and fan-created characters based on books, games, and shows, distinguishing it from more utility-focused assistants like ChatGPT or Claude. It also introduced Character Hub and voice features to make conversations feel more immersive over time. Because much of its usage centers on emotionally engaging, long-running conversations, particularly among younger users, Character.AI has faced public scrutiny over safety, wellbeing, and content moderation — issues discussed more broadly in coverage of AI safety and ethics.
Key Features
- User-created and community-shared AI characters with distinct personas
- Persistent personality and conversational style maintained across chats
- Support for original characters as well as fictional and public personas
- Voice chat features for more immersive conversations
- Mobile and web apps for chatting with characters
- Discovery feed for exploring popular community-created characters
- Safety and content moderation features aimed at younger users