Chatmosphere

Chatmosphere creates a chat room with multiple AI characters based on your description. Define who’s in the conversation, their roles and personalities, and the room’s goal—anything from brainstorming to role-play dialogue.

Chat rooms from a prompt

Build a “team” of characters (for example, a designer, marketer, engineer, and product manager) and run a conversation as if you’re talking to different specialists. This format works well for discussing options, pressure-testing ideas, and exploring hypotheses through back-and-forth dialogue.

Interactive stories and document context

Chatmosphere includes a Choose Your Own Adventure mode with story events that turns chatting into an interactive narrative. You can also attach documents to specific characters so they can reference your materials and stay aligned with your context.

Privacy and your own OpenAI key

Chats are stored only on your device. The service runs using your OpenAI API key, so you control access and API spending.