What is Chai AI?
Chai (chai.ml / chai-research.com) is a mobile-first AI character chat app launched in 2021. By 2026 it reported around 6M monthly active users and $70M annual recurring revenue. It runs primarily on iOS and Android, with quick-chat optimised conversations rather than long-form story. Pricing is freemium with a $13.99/month premium tier, and the free tier serves ads. The 4.3-star Play Store rating beat Character.AI in user ratings as of 2025.
How Reverie fits in
Reverie is a Telegram-native AI character chat platform — same category as the platform described above, but with a curated cast (8+ characters), persistent memory across days and weeks, and zero signup friction. Read the full Reverie overview →.