CHAI
Palo Alto, California, United States
What it is
CHAI is a social AI chat platform for finding, creating, and sharing AI characters. Its library contains over 25 million user-created characters across genres such as anime, RPG, horror, and comfort. Users can customise characters, while community rankings surface popular choices. CHAI says its in-house language models are trained for creativity, helpfulness, and intelligence, and run on its own cluster of over 5,000 GPUs. The service is available on Android, iOS, and the web. Chai Web works in a phone browser without an app download, but the web service and mobile app do not share data. Accounts can be created with Google, Facebook, or Apple authentication. Conversation data may be used to improve models after personal identifiers are removed, and app data is processed and stored in the United States. CHAI is intended for adults and moderates user-created content with automated filters and manual review. Its application is not tailored for regulations such as HIPAA or FISMA. Free access supports AI character chats. Paid choices include a Weekly Plan at $9.99 a month, billed weekly, and an Annual Plan at $159.99 a year.
For and against
For
- Library has over 25 million user-created characters.
- Users can create and customise characters.
- Web access works in a phone browser.
- Free plan supports chats with AI characters.
- Automated filters and manual content review.
Against
- Intended for adults.
- Mobile app and web do not share data.
- Conversation data may be used for model improvement.
- Not tailored for HIPAA or FISMA.
The verdict
CHAI offers a large character library and tools to make and share characters, with free chat access and paid plans. Consider its adult audience, separate app and web data, and stated privacy and compliance terms when deciding whether it fits.
Who it suits
CHAI suits adults who want to chat with AI characters or create and share their own. It is available through mobile apps and a phone browser, though app and web data are separate.
Plans and prices
Pro Free Trial
25M characters · advanced models · no ads · priority speed
Read 21 Oct 2026 · chai-ai.com
Free
Start chatting · 25M-character library
Read 21 Oct 2026 · chai-ai.com
CHAI MAX Auto
Removes rate limits · Pro subscriber add-on · priority responses
Read 21 Oct 2026 · chai-ai.com
CHAI MAX Monthly
Doubles rate limit · Pro subscriber add-on · most powerful models · priority responses
Read 21 Oct 2026 · chai-ai.com
Pro Annual
25M characters · advanced models · no ads · priority speed
Read 21 Oct 2026 · chai-ai.com
Weekly Plan
25M characters · Most advanced chat AI · No ads or sponsored content · Priority response speed
Read 8 Oct 2026 · chai-ai.com
Free Trial
Pro access · 25M characters · No ads or sponsored content · Priority response speed
Read 8 Oct 2026 · chai-ai.com
Annual Plan
25M characters · Most advanced chat AI · No ads or sponsored content · Priority response speed
Read 8 Oct 2026 · chai-ai.com
On the record
- Cancellation
- Subscribers can cancel in account settings and retain Pro access through the current billing period.chai-ai.com · read 8 Oct 2026
- Character creation
- Users can build and customize characters, keep them private or share them with the community.play.google.com · read 21 Oct 2026
- Character library
- The service advertises more than 25 million user-created characters spanning anime, RPG, horror and comfort themes.chai-ai.com · read 21 Oct 2026
- Cluster scale
- The research site reports 1.4 exaflops, about 5,000 GPUs and 1.2 trillion tokens served per day.chai-research.com · read 21 Oct 2026
- Company founding and headquarters
- CHAI says it was founded in January 2021 and is headquartered in Palo Alto, California.chai-research.com · read 21 Oct 2026
- Company legal identity
- The legal name is Chai Research Corp., a Delaware corporation registered at 555 Hamilton Ave Ste 300, Palo Alto, California.chai-ai.com · read 21 Oct 2026
- Company size
- The company reports 15–20 employees as of October 1, 2026.chai-research.com · read 21 Oct 2026
- Data retention
- The privacy policy allows processing for the account lifetime and up to five years after deletion, with longer retention possible for legal claims.chai-ai.com · read 21 Oct 2026
- Data storage
- The privacy policy says app data is processed and stored in the United States.chai-ai.com · read 8 Oct 2026
- Developer platform
- Chaiverse lets outside model builders submit Hugging Face-hosted models for live evaluation by CHAI users and leaderboard ranking.apis.io · read 21 Oct 2026
- Discovery and ranking
- Community rankings surface popular and high-quality characters.chai-ai.com · read 21 Oct 2026
- Documentation and support
- The terms say CHAI is not obligated to provide maintenance or technical support; the public site lists [email protected].chai-ai.com · read 21 Oct 2026
- Funding and investors
- CHAI reports more than $55 million raised from investors including AMD, CoreWeave, Ken Howery and Bill Elmore.chai-research.com · read 21 Oct 2026
- Image and video generation
- Terms state that Pro users can generate character images and short videos, with paid overages currently $0.12 per image and $0.22 per video.chai-ai.com · read 21 Oct 2026
- Independent company record
- Crunchbase identifies Chai Research Corp. as a private, active for-profit company founded by William Beauchamp with 11–50 employees and headquarters in Palo Alto.crunchbase.com · read 21 Oct 2026
- Inference infrastructure
- The company reports a private cluster of more than 5,000 GPUs serving over 51,000 unique models.chai-ai.com · read 21 Oct 2026
- Infrastructure
- Chai says its models run on its own cluster of over 5,000 GPUs.chai-ai.com · read 8 Oct 2026
- In-house models
- CHAI says it trains its own large language models for creativity, helpfulness and intelligence rather than reselling one third-party model.chai-ai.com · read 21 Oct 2026
The review
Overview
CHAI is a social AI chat platform built around user-created characters, from roleplay personas to comfort-focused companions. It is best suited to adults who want a large library to explore or want to create and share characters of their own.
Its breadth, voice chat and mobile and web access make it a flexible place to browse and chat. The main trade-offs are the separation between app and web data and paid-plan terms that need careful reading.
Key features
Character discovery and creation
CHAI says its library contains more than 25 million user-created characters across anime, RPG, horror and comfort genres. That scale gives users a broad starting point, while community rankings help bring popular characters forward. Users can also create and customise characters, which gives the platform value beyond browsing a fixed catalogue. A large library does not ensure consistent character quality, so users who prefer a smaller, curated selection may find the breadth less useful.
Chat, models and controls
Voice chat and custom content controls are supported. CHAI says its in-house language models are trained for creativity, helpfulness and intelligence and run on its own cluster of more than 5,000 GPUs. These are the maker's descriptions of its models and infrastructure; they do not establish how well a particular character will suit a given conversation.
Privacy and moderation
Accounts can be created with Google, Facebook or Apple authentication. CHAI says conversation data may be used to improve its models after personal identifiers are removed, and that app data is processed and stored in the United States. The terms say the application is not tailored for industry-specific regulations such as HIPAA or FISMA, which makes it a poor choice for regulated or sensitive professional use. CHAI is intended for adults and moderates user-created content with automated filters and manual review.
Pricing
CHAI has a free plan for chatting with AI characters, alongside paid plans. The free tier is a sensible way to explore the library, but it does not include the benefits described for the paid subscriptions.
- Weekly Plan: $9.99 a month, billed weekly. It includes 25M characters, the most advanced chat AI, no ads or sponsored content, and priority response speed. It suits frequent users who want those upgrades and the option to cancel anytime. The displayed monthly amount and weekly billing cadence are easy to misread, so check the charge schedule before subscribing.
- Annual Plan: $159.99 a year, billed yearly, with 25M characters, the most advanced chat AI, no ads or sponsored content, priority response speed and cancellation anytime. It fits people prepared to commit for a year; occasional users can avoid that upfront commitment by staying on Free.
- Free Trial: $159.99 a year, billed after 24 hours, with Pro access, 25M characters, no ads or sponsored content, priority response speed and cancellation anytime. The 24-hour period is brief, and the annual charge follows it, so this offer calls for prompt cancellation if the user does not want the yearly plan.
- CHAI MAX Monthly: $90 a month, billed monthly, for Pro subscribers. It doubles the rate limit and adds priority responses; it is aimed at existing Pro users who need more capacity, not users seeking a first paid plan.
- CHAI MAX Auto: $0.66, paid once, billed as you use it, for Pro subscribers. It removes all rate limits and adds priority responses. Its pay-as-you-use structure is for Pro users who need capacity beyond the standard allowance.
Subscribers can cancel in account settings and keep Pro access through the end of the current billing period. The published plan terms make billing cadence especially important to check before starting a trial or subscribing.
Platforms
CHAI is available on Android, iOS and the web. CHAI Web works in a mobile browser without an app download, while the maker treats the mobile app and web service as separate platforms that do not share data. That gives browser users a convenient way to access CHAI on a phone, but users who switch between app and web should expect their data not to carry across.
Who it's for
CHAI is a strong fit for adults who enjoy character-led AI chat, want many genres to browse, or want to make and share characters. Free access makes it approachable, and paid plans target users who want higher limits, faster responses or an ad-free experience. It is not suited to children, people who need conversations to sync between the app and web, or organizations that need HIPAA- or FISMA-tailored software.
Pros and cons
- Pro: More than 25 million user-created characters across several genres give curious users a broad library to explore.
- Pro: Character creation, customisation and community rankings support both creators and people looking for popular characters.
- Pro: Android, iOS and mobile-browser access let users choose an app or use the web without installing one.
- Con: App and web data are separate, limiting continuity for people who use both.
- Con: Trial billing starts after only 24 hours, and the weekly plan's displayed monthly price is paired with weekly billing, so charges deserve close attention.
- Con: The service is adult-oriented, and its terms do not tailor it to industry-specific regulations such as HIPAA or FISMA.
Alternatives
Browse AI Roleplay Chatbots for more options in this category.
- Character.AI is another free-plan option across Android, iOS and web; its free plan includes unlimited messaging, basic memory and access to Character Voice.
- CrushOn.AI offers a free plan with unlimited chats on free AI models, 100 monthly credits for Pro models and 20 daily Inspiration Replies; its Standard plan is $5.99 a month.
- HammerAI may suit users who want broader device support, including desktop operating systems, or a free allowance of 600 cloud messages per day, two cloud LLMs and local LLM support.
- RolePlai offers unlimited AI character chat on its free plan, with ads, standard memory and standard intelligence; it may fit users who prefer unlimited free chat to CHAI's paid-plan upgrades.
- Ruby Chat keeps companion chats free and makes premium features optional, a straightforward alternative for users who want a free-first service.
- Backyard AI offers 300 free messages per week, one included model and a desktop app, which may suit users who value desktop access and a defined weekly allowance.
- Nastia has a free plan with uncensored chat, daily token limits and basic companion customisation; its free trial is not offered.
- PersonaChat is an iOS-only option with an ad-supported free plan, daily limits in some regions and a trial offer.
Verdict
Choose CHAI if you are an adult seeking a huge user-created character library, the ability to build characters, and access on mobile or web. Its scale and creation tools are the clearest reasons to choose it. Look elsewhere if cross-platform data continuity matters, if you need regulated-use protections, or if the short trial and billing cadence do not suit you.