Chai: Chat AI Platform

Chai: Chat AI Platform, published by Chai Research, is an entertainment app for talking with AI personalities rather than a productivity assistant. Its chatbots take on the roles of characters and answer in character, complete with voices.

Users choose from a broad and steadily growing selection of personalities, which the developer says can include famous people, characters from films or television, and historical figures. The chatbots are meant to respond as that character would, and the description promises conversations that stay fresh rather than repeating themselves. Anyone can also build a character of their own, invented or based on a real person, then keep it private or publish it so others can chat with it. The rest of the community's creations are open to explore, so the pool of personalities keeps expanding. The developer pitches it at history enthusiasts, pop-culture fans and anyone who simply wants to pass the time in conversation, and says there are no language barriers.

The reception is lukewarm: a 3.3 average from 835,102 ratings, with 41% five stars and a heavy 30% one star. It has 10,000,000+ installs. The app is ad-supported, and in-app purchases span a very wide $0.99 to $899.99 per item. It was updated on 2026-09-18, needs Android 7.0 or newer and is rated Mature 17+. We list 105 versions, a long history, with 0.4.418 the newest at 78.3 MB.

Adults curious about character chat who are fine with a 78.3 MB download may give it a look. The large share of one-star ratings and the high top purchase price are good reasons to proceed with care.