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TheirSide — Startup Profile
Startup

TheirSide

Chat with one AI character—or bring four into one room

AI & Automation
0 Momentum score
Signals per week, last 12 weeks
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  1. Launches TheirSide launched on Product Hunt

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About the startup

TheirSide is a browser-based space for private conversations with fictional AI characters. Start 1:1, create a custom character, or bring up to four AI characters into one room, where later replies can use the shared conversation as context. Story scenes add a common setup for role-driven exchanges. No install is required, and a signed-out Mio + Kai demo plus a Free plan make it easy to try. Built for fictional entertainment and creative exploration—not multi-human chat or therapy.

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