The LLM interface you've been waiting for.
interface0 is for power users and teams: cross-provider chat & memory, multi-model synthesis, sharing & team features, granular context engineering, template prompts, forking, prompt enhancing, & more.
Otherwise, sign in with Google to join the waitlist or log in.
Use every model — Claude, ChatGPT, Gemini, Grok, and more — all in one place. Plus, memory persists across all of them. No more walled gardens or high switching costs.
Toggle between custom instructions for each message, and use templates with variables and tools for repeated workflows.
Better than "Projects." Save text or files to knowledge entries and reference them in any message, like Cursor. Plus, auto-summarize any chat and turn it into context for future messages.
Share chats with your friends or your team, and you can all interact with the same agent. Have one conversation, all together.
Create prompt libraries, shared context, and shared personas — and let your team use them all together. Easily sync and leverage the same template prompts and context engineering tools.
Easily synthesize responses from multiple models and providers, sending them all the same prompt and combining the responses into a single answer.
Let interface0 make calls for you — booking appointments, gathering information, or checking on chores. Trigger a call from any chat.
Every chat has an email inbox and outbox. interface0 can send and receive emails and suggest next steps. Or, forward any email to your interface0 address and get it processed.
"Enhance prompt," chat forking, inbox-style organization & bulk actions, Whisper speech-to-text for every provider, chained messages, auto-routing models, full text search, and more.