COSAI - AI Roleplay Chat for PC

Endless encounters with millions of characters, rich world settings, and high freedom of choice

- Obedient and homey maids, sexy and seductive secretaries, quirky and mischievous girls-next-door…
- Confident and resolute CEOs, loyal and brave bodyguards, shy and timid pet boys…

Whether it’s a boring day or an emo night, we reply instantly 24/7!

【High-Quality Official Characters】

Each official character is meticulously crafted by our team, with exquisite looks, well-rounded personalities, and legendary backstories, ensuring an immersive chat experience.

【Ultra-Freedom User Characters】

Want to create a unique character? We offer a variety of art styles and voice options for you to choose from, making it easy to create your own exclusive character. Once approved, original characters won’t face the risk of removal!

【Multiple Chat Style Models】

Want your character to be chatty or reserved? Prefer casual conversation or literary-style plots? Switch between multiple chat style models to create the perfect chat experience for yourself.

【Role-Playing with Characters】

You can choose various roles to interact with the same character, such as the spoiled wife of a dominant CEO or a strong independent woman rivaling him… The character’s attitude towards you will vary greatly depending on your role!

【Winning Affection】

It’s time to test your strategy skills! Conversations with some characters will affect their emotions, attitudes, and they may even reveal hidden backstories!

【Character Cards】

We offer a variety of character cards for the same character. The girl-next-door can wear a bikini, and even the domineering CEO can show off his six-pack!

More features await your exploration. COSAI, the most chat-friendly AI chat app, with constant updates in progress. Stay tuned!