For teams up to 50
The AI you already use, with your business behind it.
You pay for Claude, ChatGPT or Gemini and it still does not know your clients, your prices or the decision you made last quarter. Cornerstone gives it that knowledge as cited facts, on your own machine, with nothing new to learn.
What changes for you
Four things move.
Hours
Stop re-explaining the business every morning
The context you paste in by hand every session — who the client is, what you agreed, what the rule is — is already there. That time comes back on day one.
Right answers
Answers from your documents, not from the internet
Ask about your own contracts, prices and policies and get the answer with its source attached. When it is not in your documents, it says so rather than guessing.
Budget
Do more inside the AI subscription you already have
Cornerstone sends the model the facts it needs rather than the whole folder, so the same subscription goes further as your knowledge grows.
Nothing lost
What one person works out, the whole team keeps
When someone settles something with the AI, it is written back as a fact everyone's AI reads from. Nobody re-derives it, and it does not leave when they do.
How you get it
Three steps, in the order they happen.
01
Workbench Agent on your own machine
A small agent that connects the AI you already use to your knowledge. Install it, point it at your documents, and keep working exactly the way you do now.
02
Your documents become cited facts
Contracts, proposals, policies, meeting notes. Each becomes facts with their source, author and date attached, so an answer can be checked in seconds.
03
Bring the team in when you are ready
Start with two people at no cost. Add people as you go — the same platform, more seats, and everyone's AI reading from the same knowledge.
Proof
Seven methods. Same documents. Same model.
We built every method we could and measured them all the same way on the same 2,201 documents. The numbers are ours, and so are the eight questions it got wrong — we publish those too.
See the full benchmark →96.7%
found the right document, against 85% for the best alternative
98%
fewer tokens than handing the model whole documents to read
1 of 7
the only method tested that could say when the answer was not there
What it costs
Two people at no cost. £150 per user a month from the third.
No set-up fee, no platform fee, and no markup on the model you bring. You pay your AI provider what you pay them now, and us per person who is using it.
See pricing →Try it on something real.
Point it at one client, one project or one pile of documents. If it has not earned its place inside a week, you have spent nothing finding out.