Proof is Every’s online document editor built for humans and AI agents to collaborate on the same document.
It is designed for the kinds of documents agents are increasingly helping create—plans, memos, research briefs, product requirement documents, proposals, bug reports, and strategy docs.
What makes Proof different
Built for humans and agents — Proof is designed so agents can write and edit documents as naturally as people do.
Live collaboration — Multiple collaborators can work in the same document.
Comments and track changes — You can review, discuss, and revise documents together.
Provenance tracking — Proof shows who wrote what. Human-written text and AI-written text are visually distinguished.
Fast and login-free — You can use Proof without creating an account.
Open source — Proof is open source and available for anyone to inspect and build on.
What people use Proof for
People commonly use Proof for:
Strategy documents
Research briefs
Product and implementation plans
Memos and proposals
Collaborative drafts between people and AI agents
Where to try Proof
You can try Proof at proofeditor.ai.
For more context on the launch, see Every’s announcement: Introducing Proof.