Character AI is a generative AI chatbot platform where users can chat with or build custom AI personas. Former Google LaMDA engineers Noam Shazeer and Daniel de Freitas launched it publicly in September 2022. Since then, it has reached over 180 million monthly website visits and grown into one of the most-used AI chat platforms globally, driven primarily by younger audiences drawn to roleplay and creative storytelling.
What Is Character AI?
Character AI — also referred to as c.ai or char.ai — lets users hold text-based conversations with AI-powered characters. Those characters can represent fictional personas, historical figures, celebrities, or entirely original creations built by other users. The platform also allows anyone to create a character by defining personality traits, a backstory, a greeting message, and example dialogue samples.
Unlike general-purpose chatbots, Character AI keeps responses shaped by those defined traits throughout a conversation, making each interaction feel more persona-consistent than a standard AI reply. It sits in a broader category of conversational AI tools built around interactive, dialogue-driven use, though its focus on community-created characters gives it a different feel from tools like ChatGPT or Gemini.
How Does Character AI Work?
Language Model Foundation
Character AI runs on a large language model (LLM) trained on large volumes of text. The model learns to predict probable next words in a sequence, which gives it an understanding of grammar, context, and conversational patterns. When a user sends a message, the model evaluates the full conversation history alongside the character’s defined traits and generates a reply accordingly.
The platform originally ran a proprietary model developed in-house by Shazeer and de Freitas. In August 2024, Google entered a $2.7 billion deal with the company — structured as an investment plus a non-exclusive license to Character AI’s model technology. The co-founders returned to Google to work on Gemini, and the remaining team shifted toward building on open-source model foundations.
Character Personality and Response Shaping
Character creators write a description from the character’s perspective, set a greeting message, and optionally supply example dialogues that show how the character speaks. Users can rate each AI response from one to four stars, which adjusts that specific character’s behavior over time. The platform does not maintain persistent memory across separate sessions by default, though persona features allow limited context to carry forward.
Key Features of Character AI
Beyond text chat, the platform includes real-time voice calls with AI characters. Group chat rooms let multiple characters interact in a single conversation. Scenes place users into pre-built interactive story scenarios. In January 2025, Character AI launched two word-based games — Speakeasy and War of Words — available to paid subscribers and a limited pool of free users.
The Imagine feature, released in early 2026, converts conversation moments into visual outputs, including animated clips. Creators can now also publish Scenes and Streams — the latter placing two characters in a generated dialogue around a user-chosen topic. For those exploring character-based platforms that connect to external AI models, alternatives like Chub Venus AI take a different technical approach while targeting a similar audience.
Character AI User Statistics and Traffic
Character AI peaked at 28 million monthly active users in mid-2024, according to Business of Apps. That figure dropped to 20 million by January 2025 as cheaper generative AI tools pulled users away and the co-founders’ departure reduced product momentum. Still, the platform maintains session depths that most AI tools don’t reach. A detailed look at Character AI’s traffic and user trends shows each visitor averages 17 minutes and 23 seconds per session and views nearly 10 pages — more than double ChatGPT’s average session length.
User Demographics
Users aged 18 to 24 account for 51.84% of all visitors, per SimilarWeb data. The 25-to-44 group adds another 36.2%. Users over 65 represent only 2.53% of traffic. Gender is split nearly equally: 50.61% male and 49.39% female, which is atypical for AI companion platforms. The United States generates 24.70% of total visits, followed by India at 9.12% and the Philippines at 8.95%.
Character AI Pricing and Plans
Character AI is free to use with ads. The paid subscription, c.ai+, costs $9.99 per month. Subscribers get priority messaging with no waiting rooms, and access to features including the Imagine Animated Chats creation tool and both games. Free users can earn one-hour ad-free passes through the platform’s Charms system by spending time on the app each day. There is no publicly listed annual discount option.
Character AI Safety Concerns and Age Restrictions
The platform has faced serious criticism over moderation. In November 2023, a 13-year-old in Colorado died by suicide after extensive interactions with multiple Character AI chatbots. In February 2024, a 14-year-old in Florida died under similar circumstances after forming an attachment to a chatbot modeled on the Game of Thrones character Daenerys Targaryen. Both families sued the company.
In December 2024, Character AI introduced a dedicated model for users under 18, with filters blocking responses related to violence and explicit content. The platform also began showing a 60-minute engagement notification and clearer disclaimers that its characters are not real people.
In October 2025, the company announced that users under 18 would be barred from creating or conversing with AI characters starting November 25, 2025. Minor users can still access previously generated chats and create images and videos, but open-ended AI conversations now require age verification via selfie, with ID checks applied when age cannot be confirmed from the photo alone.
These policies matter beyond Character AI. Any platform that stores conversations in the cloud carries data handling implications, which is why understanding how browser-based AI services handle user data remains relevant regardless of which tool you use.
| Metric | Value | Source |
|---|---|---|
| Monthly active users (Jan 2025) | 20 million | Business of Apps |
| Peak monthly active users (mid-2024) | 28 million | Business of Apps |
| Total app downloads (Jan 2025) | 40 million+ | SimilarWeb |
| Characters created on platform | 18 million+ | Character.AI |
| New characters per month | ~9 million | Character.AI |
| Annual revenue 2024 | $32.2 million | Business of Apps |
| Revenue growth (2023–2024) | 112% | Business of Apps |
| Google licensing deal (Aug 2024) | $2.7 billion | Reported |
FAQs
What is Character AI used for?
Character AI is used for roleplay, creative writing, language practice, entertainment, and conversation with fictional or historical personas. About 41% of users report using it for emotional support or companionship, though the characters are not real people or trained mental health resources.
Is Character AI free to use?
Yes. Character AI is free with ads. The c.ai+ subscription costs $9.99 per month and removes most ads, adds priority messaging, and unlocks specific features including games and animated chat creation.
Who created Character AI?
Noam Shazeer and Daniel de Freitas, former Google engineers who worked on the LaMDA language model project, founded Character AI in November 2021. Both returned to Google in 2024 following a $2.7 billion licensing arrangement.
Is Character AI safe for minors?
As of November 25, 2025, users under 18 cannot create or hold open-ended conversations with AI characters on Character AI. They retain access to saved chats, videos, and image creation only. Age is verified via selfie at sign-up.
How many characters does Character AI have?
Character AI hosts over 18 million user-created characters, with approximately 9 million new ones added each month. Characters range from anime personas and historical figures to study aids and original fictional creations.
