Everything you need to know about Chai AI.
Chai AI is an artificial intelligence company and a social AI platform where anyone can create their own unique AI character and share it with the world. With over 25 million characters created by users — from anime and RPG to horror, comfort characters, and everything in between — there is always someone new to talk to. Chai AI is also the platform through which Chai Research shares its latest advancements in Large Language Model research directly with the public, giving every user access to some of the most advanced conversational AI available anywhere. To support millions of active users, Chai Research operates one of the world's largest AI inference clusters — purpose-built to deliver fast, intelligent responses at scale.
Yes — Chai AI is free to start. You can chat with AI characters immediately after signing up with Google. A Pro subscription unlocks unlimited messages, faster responses, and access to the most advanced AI models.
Chai AI offers a free 24-hour trial of Pro, an annual plan at $117.99/year (that's $9.83/month), and a monthly plan at $14.99/month. All paid plans include unlimited messages and full access to every character.
Both Chai Web Pro and the Chai App are products of Chai Research Corp. They are separate platforms with no data sharing between the two. Chai Web Pro is the premium version of the Chai experience: because we do not monetise subscribers with advertisements or sponsored content, we are able to dedicate those resources entirely to serving the most advanced AI. As a rule of thumb, for each request a Chai Web Pro subscriber sends, the AI's response takes 8x more compute than an average app user.
Chai AI is powered by in-house developed Large Language Models (LLMs), trained specifically to optimise for creativity, helpfulness, and intelligence. Unlike AI assistants such as ChatGPT — which are task-focused tools built by software engineers for software engineers — Chai's models are built to feel alive. They are non-robotic, expressive, and genuinely creative, making every conversation feel like you are talking to a real personality rather than a search engine. These models run on Chai Research's own cluster of over 5,000 GPUs, serving more than 51,000 unique AI characters.
Chai AI features a massive library of over 25 million user-created, personality-driven AI characters built for social chatting and roleplay. Unlike generic AI tools, Chai's characters are designed for emotional engagement and creative storytelling while maintaining intelligence and factual accuracy. Users can build and fully customise their own AI characters using Chai's creation tools, and the platform's community-driven rankings surface the most popular and highest-quality characters. Behind every conversation is Chai Research's in-house developed LLMs — some of the most advanced conversational AI models available — running on one of the world's largest private AI inference clusters.
Chai AI is built and operated by Chai Research, a US-based Social AI company. Unlike most chat platforms that resell access to a single third-party model, Chai runs its own inference cluster and trains its own models — pouring 100% of its revenue back into research and compute. The result is more intelligent, more responsive AI conversations than you'll find anywhere else.
Chai AI serves over 51,000 unique AI models from its own GPU cluster, compared to Character AI which runs a single underlying model. Chai Research dedicates all of its resources to advancing AI quality — every improvement goes directly into the models you chat with. Many users who switch from Character AI find conversations on Chai feel more natural, more intelligent, and more engaging.
Polybuzz is an app-focused platform. Chai AI is a US-based Social AI company focused entirely on building the most advanced conversational AI. Chai does not share user data with any third parties, operates its own infrastructure in the US, and trains its own models. If AI quality and data privacy matter to you, Chai AI is the stronger choice.
Chai AI does not share your personal data with any third parties. Chai Research is a US-based company and your conversations stay within Chai's own infrastructure. You can review the full details in our Privacy Policy.
Chai AI is designed for adults. The platform has content moderation in place and users can report inappropriate content. We use both manual and automated detection methods to block bad actors on our website.
Chai AI is a user-generated content platform — characters and conversations are created by members of the Chai community, not by the Chai team. As with any large social platform, some user-created content may contain mature themes. Chai AI is not intended for minors. The platform operates content moderation systems, including both automated filters and manual review processes, and users are encouraged to report any content that may violate our Terms of Service. Content found to be in violation of our policies is removed.
NSFW stands for 'Not Safe For Work' — a label commonly used across online communities to indicate content that may not be appropriate for all audiences or settings. On Chai AI, content may carry this label if it contains mature language, themes, or subject matter. Chai AI is intended for adult users only. If you encounter content you believe violates our Terms of Service, you can report it directly within the platform.
Yes — Chai AI works in any mobile browser. Visit www.chai-ai.com on your phone and sign in with Google. No app download is needed.
Chai AI is built by Chai Research, a US-based Social AI company. Chai Research operates its own GPU cluster, trains its own models, and reinvests everything into making AI conversations better. You can learn more at chai-research.com.
You can cancel your subscription at any time from your account settings. After cancelling, you keep Pro access until the end of your current billing period.