Chai AI
 | |
| Type | Private |
|---|---|
| Industry | Artificial intelligence |
| Founded | 2021 |
| Founder | William Beauchamp |
| Headquarters | Palo Alto , United States |
Area served | Worldwide |
Key people | William Beauchamp (CEO) |
| Products | Chai app Chaiverse |
| Services | Conversational AI platform Character-based chatbots LLM developer platform |
| Website | chai-research |
Chai AI (also known as Chai Research) is an American artificial intelligence (AI) company that operates a chatbot platform where users can create, share, and interact with character-based chatbots powered by large language models (LLMs).[1] The company is headquartered in Palo Alto, California.
History
[edit]
Chai was founded in 2021 by William Beauchamp, a former quantitative trader educated at Cambridge, who began developing the initial prototype in 2020 in Cambridge, England.[2] The company launched in 2021 and relocated to Palo Alto in 2022.[3]
In June 2023, Chai raised US$2 million in a pre-seed funding round.[4] In September 2023, GPU cloud provider CoreWeave invested in the company at a valuation of US$450 million. In January 2024, Chai Research reported a $450 million valuation following an investment from cloud computing provider CoreWeave.[5] In September 2023, GPU cloud provider CoreWeave invested in the company at a valuation of US$450 million. In January 2024, the company raised additional funds. In July 2024, authorities in Belgium launched an investigation into the company following reports of a man dying by suicide following extensive chats on the Chai app.[6][7][8]
In 2025, CoreWeave and AMD made further investment in the company, which brought total funding to more than US$55 million. As of 2025, Chai had 1 million daily active users.[9][10]
In the first quarter of 2026, it reported annual recurring revenue of approximately US$80 million and a valuation of US$2.4 billion.[11]
Platform
[edit]The Chai is available on iOS and Android. It gives users a swipeable feed of user-generated AI characters. Users can chat with existing bots or create their own using no-code tools that define a character's name, opening message, personality traits, and backstory. The app focuses on social and entertainment use cases, including role-playing, interactive fiction, and companionship.[12][13]
Chai initially relied on GPT-J before transitioning to proprietary in-house models trained on user-feedback data. It uses reinforcement learning from human feedback (RLHF), Direct Preference Optimization (DPO), and a technique it calls "model blending," which ensembles multiple LLMs at the conversation level.[13][8]
In 2023, Chai launched Chaiverse, a developer platform where third-party researchers and developers can submit LLMs for live evaluation by users, with cash prizes based on engagement metrics.[14] The platform operates on a freemium model with free ad-supported access and paid Premium and Ultra tiers.[12]
Reception
[edit]In 2022, Canadian writer Sheila Heti published a five-part series in The Paris Review, documenting conversations with chatbots on Chai, including the platform’s default bot Eliza. Heti later used those conversations while developing a novel.[15]
In January 2026, CHAI introduced country-based access tiers requiring users in designated "low tier" regions to subscribe for access, while users in "high tier" regions retained free ad-supported access. Users criticized the rollout for poor communication and inconsistencies in the list of affected countries. Following backlash, the company announced a "basic" tier with unlimited messages and ads intended to cover electricity and infrastructure costs.[16]
In February 2026, CHAI faced additional criticism after unannounced token limits froze conversations for both free and paid users, with some subscribers reporting lockouts lasting from several hours to a week.[17]
See also
[edit]References
[edit]- ↑ Panico, Bella (29 January 2023). "Hello, Sheila!". The Yale Herald. Retrieved 11 March 2025.
- ↑ "Chai Research moves chatbot company from Cambridge to Palo Alto". Cambridge Independent. Archived from the original on 2022-10-21. Retrieved 2026-06-09.
- ↑ Scialom, Mike (20 October 2022). "Chai Research moves chatbot company from Cambridge to Palo Alto".
- ↑ "Social AI platform Chai announces strategic investment from CoreWeave at $450M valuation cap". StreetInsider.com.
- ↑ "CHAI AI Raises Over $55M to Lead User-Generated AI". TechIntelPro. Retrieved 2026-06-09.
- ↑ Lovens, Pierre-François (18 February 2026). ""Sans ces conversations avec le chatbot Eliza, mon mari serait toujours là"". La Libre.be (in French). Retrieved 20 February 2026.
- ↑ "AI friendships claim to cure loneliness. Some are ending in suicide". The Washington Post. 6 December 2024. Retrieved 11 March 2025.
- 1 2 El Atillah, Imane (March 31, 2023). "Man ends his life after an AI chatbot 'encouraged' him to sacrifice himself to stop climate change". www.euronews.com. Retrieved March 6, 2026.
- ↑ "CHAI AI Raises Over $55M to Lead User-Generated AI". TechIntelPro.
- ↑ Dargan, James (2025-07-08). "Chai AI Secures Over $55M as User-Generated AI Platform Surpasses 10M Users". AI Insider. Retrieved 2026-06-09.
- ↑ Chowdhry, Amit (May 1, 2026). "CHAI AI Surpasses $80 Million ARR At $2.4 Billion Estimated Valuation".
- 1 2 https://www.esafety.gov.au/key-topics/esafety-guide/chai-ai
- 1 2 "Outlasting Noam Shazeer, crowdsourcing Chat + AI with >1.4m DAU, and becoming the "Western DeepSeek" — with William Beauchamp, Chai Research". www.latent.space. June 4, 2026.
- ↑ https://indiaai.gov.in/article/chai-ai-is-taking-your-conversations-to-the-next-level
- ↑ "Sheila Heti on the Fluidity of the A.I. "Self"". The New Yorker. 13 November 2023. Retrieved 27 August 2025.
- ↑ Cubbins, Dwayne (2026-02-06). "CHAI founder says rising compute bills forced country-based free access blocks [U: Official plan]". PiunikaWeb. Retrieved 2026-02-26.
- ↑ Cubbins, Dwayne (18 February 2026). "CHAI app users report token limit blocking chats without warning". PiunikaWeb. Retrieved 21 February 2026.