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, at a glance
Start a multi-character room in your browser
| Browser ready | Open TheirSide in a supported browser. No desktop or mobile app install is required. |
|---|---|
| Guest and Free | The signed-out preview opens with Mio and Kai. Free includes limited group chat and one room per month. |
| People in the room | One human user shares a room with one to four AI characters. It is not real-time multi-human chat. |
| Shared room context | Later AI replies can use recent room messages, including another AI reply. This depends on context; it is not a fixed turn queue. |
| What is not guaranteed | Speaker choice, order, latency, whether every character replies, and repeatable output are not guaranteed. |
How the room works
One prompt, shared by the whole cast
This is not a row of separate assistant threads. Every fictional AI character enters the same private room, reads the shared context, and responds from their own role. Add a character you created or start from a prepared scene when the conversation needs more structure.
Open a room
Try the room first, then choose the cast
Begin with Mio and Kai in the guest preview. Keep the same prompt, listen for the contrast, then decide whether the room needs your own characters or a prepared scene.
Open the Mio and Kai guest room- 01
Enter the guest preview
Meet the fixed Mio and Kai pair in your browser before creating an account.
- 02
Give the room one fact
Write one question, conflict, or scene detail that every character can read.
- 03
Listen for the difference
Compare what each character notices, challenges, or adds to the shared context.
- 04
Choose the next room
Sign in only when you want a custom cast, saved history, or a prepared story scene.
Where group chat helps
Use several voices when the situation has more than one side
- Let several fictional characters react to the same question in one private room.
- Test a misunderstanding, a difficult choice, or another scene with built-in tension.
- Bring a character you created into the conversation after reviewing its profile and avatar.
- Keep history and available memory, image, or voice capabilities inside an account-controlled workspace.
Choose the room size
One voice or several points of view?
- Focus
- Choose one-character chat when you want a single voice and a quieter exchange.
- Contrast
- Choose group chat when several fictional characters should react, disagree, or build on each other.
- One workspace
- Move between character chat, group rooms, story scenes, and custom characters without changing tools.
Privacy and limits
The room stays private; the characters stay fictional
TheirSide is an entertainment space for fictional character conversations. Rooms and saved history are account-controlled, and personal chat data can be removed through account deletion. It does not publish conversations, provide professional advice, or permit unauthorized use of a real person's likeness, voice, identity, or protected material.
Questions before you enter
What to know before opening a group room
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.
Choose a room