Character.AI
Unicorn · $2.5BFounded 2021 · 7 known investors
Consumer generative-AI platform where users create and chat with customizable AI characters via web and mobile apps.
Also known as c.ai · char.ai · Character AI · Character.ai
Founders & leadership
Investors · 7
Also in the syndicate · 1
Valuation · disclosed
Disclosed eventsSource: SEC prospectus filings, and round valuations the company or its investors disclosed — follow each entry's link for the claim.
Company profile
researched Aug 2026Character.ai (also known as c.ai, char.ai or Character AI) is a US-based generative AI chatbot service that lets users converse with customizable characters. Users create characters, define their personalities and parameters, and publish them to a community library; many characters are based on fictional media or real people, living or deceased, while others are original and built for purposes such as creative-writing assistance or text-adventure games. Character personalities are specified through descriptions written from the character's point of view plus a greeting message, and are refined through example conversations and star ratings; users rate responses from 1 to 4 stars, which influences both the individual character and overall behavioral selection. The platform also supports group chatrooms in which multiple users and AI characters converse at once.
The service is delivered through a registration-required website available in 31 languages and through iOS and Android apps that support text chat, voice calls, character creation with custom voices, and social features such as following creators. In January 2025 the company added in-platform games — Speakeasy, a word-elicitation game, and War of Words, a dueling game refereed by an AI — available to paid subscribers and a limited number of free users. In July 2026 it launched c.ai Series, microdramas animated with generative AI.
Character.ai originally pursued a closed-loop strategy in which it trained its own large language model, used that model to power its chatbots, and fed usage data back into training. Following the August 2024 arrangement with Google, Axios reported the company would pivot exclusively to post-training and use open-source models developed by others, such as Meta's Llama.
Founding story
Character.ai was founded in 2021 by Noam Shazeer and Daniel de Freitas, both engineers who left Google that year. Shazeer was a lead author of the Transformer paper widely cited as foundational to modern chatbots, and de Freitas led the design of Google's Meena/LaMDA conversational system. Shazeer became CEO and de Freitas president. The company raised $43 million in seed funding around its founding, and its stated ambition extended beyond entertainment: a 2022 blog post asked what it would mean to create an always-available personal AI, and Shazeer said the company was betting its models would move the technology closer to artificial general intelligence.
Business model
Character.ai operates a consumer freemium service. Core chat and voice interaction are offered free of charge, with monetization through a subscription tier and, more recently, advertising. The company announced character.ai+ on May 11, 2023, an opt-in plan at $9.99 per month marketed as offering skipped waiting rooms, faster messaging and responses, and access to a faster support channel. App-store listings show in-app purchases and ads on Android; in developer responses to Google Play reviews the company stated that ads help keep the service free given the infrastructure cost of millions of daily chats, and that free users can activate a one-hour ad-free pass via Charms. At the time of its March 2023 Series A the company was reported to be pre-revenue.
Subscription revenue from the c.ai+ plan at $9.99 per month, in-app purchases on mobile, and advertising shown to free users, with an option to temporarily remove ads. The company was described as having no revenue when it raised its $150 million round in March 2023.
Traction
The Washington Post reported hundreds of thousands of user interactions in the first three weeks of beta testing in 2022. By March 2023 the company said it was nearing 100 million site visits per month, a four-fold increase in two months. The May 2023 mobile apps drew over 1.7 million downloads in a week, and the site had 3.5 million daily visitors as of January 2024. The Android app lists more than 50 million downloads with 2.42 million reviews at a 2.3-star average, while the iOS app holds a 4.3-star average from 554,000 ratings.
Latest developments
After the August 2024 Google agreement and the founders' departure, Character.ai continued to operate, retiring its beta site in September 2024 and adding under-18 safety models, usage-time notifications and disclaimers in December 2024. It introduced the Speakeasy and War of Words games in January 2025. In October 2025 it announced that from November 25, 2025 users under 18 would be barred from creating or talking to chatbots while retaining access to prior conversations and image/video creation. Karandeep Anand is now CEO and said in a November 2025 interview that he lets his six-year-old daughter use the app under supervision with his account. In July 2026 the company launched c.ai Series, generative-AI-animated microdramas, and the Android app was last updated in August 2026 amid an expanded advertising model.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
Character.ai was an early entrant that helped start the consumer AI chatbot and companion category when its beta debuted in 2022, and reached a $1 billion valuation in March 2023. Fortune reported that the AI-companion field subsequently became crowded — citing Nomi, Kindroid, Replika, Candy.ai and EVA alongside Character.AI — and that Meta introduced its own AI characters in October 2023, with commentators arguing there is little business moat in AI chatbot companions. The company remains a high-traffic consumer AI property, ranking #93 in the Entertainment category on the US App Store.
The platform combines user-generated character creation with founder expertise in the Transformer architecture and LaMDA, a large community library of user-made characters, multi-user group chatrooms, voice calls with custom character voices, conversational memory, and a feedback loop in which user star ratings shape both individual characters and overall model behavior selection.
Technology
The company was founded by the developers of Google's LaMDA. Co-founder Noam Shazeer was a lead author of the "Attention Is All You Need" paper that introduced the Transformer architecture underlying modern large language models, and Daniel de Freitas was lead designer of Google's experimental Meena system, which became LaMDA. Character.ai initially trained its own large language model and used chatbot usage data to further train it in a closed loop. Proceeds of the 2023 round were earmarked for expanded compute to support a more sophisticated model with advanced reasoning and greater accuracy. After the August 2024 Google agreement the company was reported to be moving to post-training on third-party open-source models. Product features include persistent memory of past conversations, custom character voices, live voice calls, and, for minors, a separate under-18 model with input and output filters on sensitive content.
Go-to-market
Direct-to-consumer distribution through the character.ai website and the iOS App Store and Google Play, supported by community-driven content creation and sharing of user-made characters. Growth has been substantially organic and social — one App Store reviewer described discovering the app through TikTok. The Android app has surpassed 50 million downloads and the mobile apps drew more than 1.7 million downloads in their first week after the May 2023 release.
Consumers seeking AI chat, roleplay, companionship, collaborative storytelling and interactive entertainment. As of January 2024 the site had 3.5 million daily visitors, the vast majority aged 16 to 30. The Android listing carries a Teen rating and the iOS listing an 18+ age rating; from November 25, 2025 the company said users under 18 would no longer be able to create or talk to chatbots.
Geography
Country of origin is the United States; the service is offered in 31 languages, and the iOS listing supports 28 languages. Regulatory attention has included the UK, where Ofcom said chatbots impersonating real and fictional people fall under the Online Safety Act.
History
Established in November 2021, the company opened a public beta on September 16, 2022 and quickly logged hundreds of thousands of user interactions. A $150 million round led by Andreessen Horowitz in March 2023 valued it at about $1 billion, when it had 22 employees; co-founder Shazeer said later in 2023 the team numbered around 35. Mobile apps launched in May 2023 alongside the $9.99-per-month c.ai+ subscription. A rumored further round at a valuation above $5 billion, reportedly involving Google, was discussed in September 2023 but never happened. In August 2024 Google hired Shazeer, de Freitas and more than two dozen researchers, licensed Character.AI's models non-exclusively, and bought out venture investors at roughly a $2.5 billion valuation; general counsel Dom Perella took over on an interim basis with about 100 remaining employees, and Andreessen Horowitz's Sarah Wang stayed on the board through the transition. The original beta site was retired in September 2024. Subsequent developments include December 2024 teen-safety features, January 2025 in-app games, an October 2025 announcement barring under-18 users from chatbot conversations effective November 25, 2025, and the July 2026 launch of c.ai Series microdramas. Karandeep Anand is listed as CEO.
Risks & controversies
Character.ai has been criticized for weak moderation of its chatbots, with reported incidents involving grooming of underage users and content promoting suicide, anorexia and self-harm, and early criticism for permitting chatbots based on figures such as Adolf Hitler and Saddam Hussein. In October 2024 it removed a chatbot based on murder victim Jennifer Ann Crecente after her father complained, and UK reporting noted removals of chatbots based on Brianna Ghey and Molly Russell; Ofcom subsequently said such impersonation content falls under the Online Safety Act. The company faced multiple lawsuits and concerns that prompted December 2024 teen-safety changes, which in turn drew user complaints that bots became overly restrictive. Commercially, Fortune characterized the AI-companion market as lacking a moat, noted the company was pre-revenue at a $1 billion valuation, and framed Google's 2024 hiring of the founders as a sign of strain in the AI startup sector; the arrangement also raised potential FTC antitrust scrutiny of quasi-acquisitions. Recent app-store reviews cite heavy advertising, degraded response quality and tighter free-tier limits.
Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Founder mafia
2 people who came through Character.AI went on to found or lead other companies.
Timeline · 13
launches, deals, and filingsCharacter.ai launched c.ai Series, microdramas animated using generative AI.
Character.ai announced that from November 25, 2025 users under 18 would be barred from creating or talking to chatbots, while retaining access to previously generated conversations and the ability to create videos and images.
Character.ai began offering two games: Speakeasy, a word game in which players try to prompt the chatbot to say a target word, and War of Words, a dueling game judged by an AI referee. Available to paid subscribers and a limited number of free users.
Amid multiple lawsuits and safety concerns, Character.ai introduced a dedicated model for users under 18 that moderates responses on sensitive topics such as violence and sex with input and output filters, notifications after 60 minutes of continuous use, and clearer disclaimers that characters are not real people. Custom bots flagged as violating terms were deleted.
The Washington Post reported that Character.ai removed a chatbot based on Jennifer Ann Crecente after the deceased's father alerted the company; UK reporting noted removals of chatbots based on Brianna Ghey and Molly Russell.
Google hired co-founders Noam Shazeer and Daniel De Freitas along with more than two dozen Character.AI researchers, signed a non-exclusive license for Character.AI's models, and bought out venture investors at around a $2.5 billion valuation; the total deal size was not disclosed. Character.AI remained independent, led on an interim basis by general counsel Dom Perella, with Andreessen Horowitz's Sarah Wang staying on the board as an independent director through the transition. The company shifted to post-training on open-source models developed by others.
General counsel Dom Perella took over leadership of Character.AI on an interim basis following the departure of co-founders Shazeer and De Freitas to Google.
In response to chatbots impersonating real people, UK regulator Ofcom announced that content from chatbots impersonating real and fictional people would fall under the Online Safety Act.
An opt-in subscription plan priced at $9.99 per month, marketed as including skipped waiting rooms, faster messaging and responses, and access to a faster support channel.
A mobile app was released for iOS and Android, receiving over 1.7 million downloads within a week.
Character.AI raised $150 million at a $1 billion valuation in a round led by Andreessen Horowitz, with participation from Nat Friedman, Elad Gil, A Capital and SV Angel. The company said the capital would expand compute abilities and grow its then 22-person team; it was reported to be pre-revenue.
$150M source ↗
The first beta version of the Character.ai service was made available to the public; the beta was retired in September 2024 and replaced by the current website.
Character.ai was established in November 2021 and the service launched that month per Wikipedia's infobox.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 8
primary sources listed
- Character.ai - Wikipediaen.wikipedia.org · web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Character.AI do?
- Consumer generative-AI platform where users create and chat with customizable AI characters via web and mobile apps.
- Who are Character.AI's investors?
- Character.AI's investors include A.Capital Ventures, Andreessen Horowitz, Connect Ventures, Greycroft, Lightspeed Venture Partners, SV Angel.