AI group chat
Characters that talk together.
Open one private room, type one scene, and let multiple AI characters answer from different angles.
Browser group chat facts
One room, several characters joining in
| Browser access | Use TheirSide directly in a supported web browser without installing a desktop or mobile app. |
|---|---|
| Free and guest access | A signed-out guest preview opens with Mio and Kai. The Free plan includes limited AI group chat and one AI group room per month. |
| Participants | A freeform room contains one human user and one to four AI characters. It is not a real-time multi-human group chat. |
| Character-to-character context | A later AI character may respond to a previous AI message because the room supplies shared recent-message context; this is conditional rather than a fixed turn queue. |
| Limits | This does not guarantee which speaker replies, speaker order, response latency, that every character replies, or repeatable output. It is not a real-time multi-human chat service. |
What it is
More than one assistant—an entire room of characters
AI group chat is different from a single assistant thread. You can bring multiple fictional AI characters into one conversation, add your own custom characters, or step into a scripted scene where the room already has tension.
Create a room
Start with Mio and Kai, then build your own cast
Start with the fixed Mio and Kai guest room, then decide whether the same idea needs a custom cast or a scripted scene.
Try the guest group room- 01
Open the guest room
Use the link below to load the fixed Mio and Kai preview without creating an account.
- 02
Write one shared prompt
Give the room a question, conflict, or scene fact that both AI characters can respond to.
- 03
Compare the character voices
Read how each AI character reacts to the same context, then clarify the scene when their replies need more direction.
- 04
Move to a custom or scripted room
Sign in when you want to use your own authorized character material, keep account-controlled history, or choose a scene with role slots and known facts.
Use cases
When one voice is not enough
- Freeform AI group chat with more than one character voice
- Scripted story scenes such as misunderstandings, copied promises, or social conflicts
- Custom characters created from avatar uploads and editable profiles
- AI character conversations with history, memory, image, and voice support where enabled
Group chat vs one character
One character or a roomful?
Boundaries
Private, fictional, and easier to understand
TheirSide is for entertainment and fictional character conversations. Rooms are private and account-controlled, and account deletion is available for personal chat data. It is not a public publishing platform, a professional advice product, or a tool for unauthorized use of real people's likeness, voice, identity, or protected material.
Is TheirSide an AI group chat website?
Yes. TheirSide runs in a supported web browser and gives one human user a group chat with one to four fictional AI characters.
Can multiple AI characters chat with me and respond to each other?
Multiple AI characters can answer in one room. A later reply may use an earlier AI message as shared context, but speaker choice, order, timing, and repeatable results are not guaranteed.
Do I need to install an app?
No. TheirSide opens directly in a supported browser without a desktop or mobile app install.
Is there a free AI group chat entry?
Yes. A signed-out guest preview opens with Mio and Kai, and the Free plan includes limited AI group chat and one AI group room per month.
Can I use it for writing or worldbuilding?
Yes. TheirSide is useful for writing sparks, worldbuilding, private fictional character conversations, and entertainment.
Are AI group chats public?
No. TheirSide rooms and saved conversation history are private and account-controlled.
Start a room