The contextual knowledge layer for your AI
The AI tool that every business needs.
Cornerstone gives your AI your organisation’s knowledge as cited facts. It answers from what you actually know, tells you when it doesn’t, and does more with every token as your knowledge grows.
Who it is for
For you, your team, your organisation.
Cornerstone solves the AI problems you are experiencing at small team level through to large scale enterprise. Which of these sound like you?
You and your team
- You paste the same background into the AI every morning — who the client is, what you agreed, which rule applies — because it forgot all of it overnight.
- Someone asked it about a client's contract and it answered, confidently, from a version two revisions out of date.
- Three of you use AI every day, and none of you can see what the others have already worked out.
Your organisation
- The pilot went well. Then you pointed it at twenty years of documents and the answers stopped being reliable.
- The AI bill climbs with usage, and finance wants to know why the productivity you planned for has not arrived.
- Every AI output still has to be checked by the person accountable for it, so the team is no faster than it was.
Regulated work
- You cannot put AI in front of client advice, a filing or a decision until you can show exactly where every answer came from.
- A review found it had applied a rule from one region to a case in another, and nothing in the answer showed that it had.
- Your security team's first question is whether it can run inside the boundary at all.
See it for your sector
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 questions it got wrong.
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
The platform
Keep the AI you already use. Give it your knowledge.
Cornerstone holds what your organisation knows as cited facts. The Coordinator keeps the work and the knowledge in step. Your people reach both through the AI they already use.
Your organisation’s knowledge
Documents
+ many moreMeetings
+ many moreTickets
+ many moreDecisions
+ many morePolicies
+ many more
Instructed Intelligence
The platform
Cornerstone
The knowledge layer
What your organisation knows, held as typed, cited facts. Each one carries its source, its author, its date and what it applies to.
Rule
EU client data stays in EU regions
Legal · 12 Mar 2026
Decision
Frankfurt is the default EU region
Architecture · 4 Jun 2026
Coordinator
Keeps work and knowledge in step
What is being worked on, by whom, and what was decided. Every session starts from what the last one learned.
Q3 board narrative
In progress · Finance
Milan region: residency rule
Decided · 4 Sep 2026
Current facts, with sources
Decisions and outcomes, written back as facts
Workbench
Connect your AI
Claude
ChatGPT
Gemini
Copilot
Llama
+ many others
If you use multiple LLMs, our Router helps choose which is best for the task.
Turned into cited facts
Cited facts for each question. A clear no, when there are none.
Questions
Work produced. Decisions made.
What is in progress, and by whom. What was already decided.
Your organisation’s knowledge
Documents
+ many moreMeetings
+ many moreTickets
+ many moreDecisions
+ many morePolicies
+ many more
- Turned into cited facts
Instructed Intelligence
The platform
Cornerstone
The knowledge layer
What your organisation knows, held as typed, cited facts. Each one carries its source, its author, its date and what it applies to.
Rule
EU client data stays in EU regions
Legal · 12 Mar 2026
Decision
Frankfurt is the default EU region
Architecture · 4 Jun 2026
- Current facts, with sources
- Decisions and outcomes, written back as facts
Coordinator
Keeps work and knowledge in step
What is being worked on, by whom, and what was decided. Every session starts from what the last one learned.
Q3 board narrative
In progress · Finance
Milan region: residency rule
Decided · 4 Sep 2026
Your AI with Cornerstone
- Cited facts for each question
- A clear no, when there are none
- Questions
Your AI with the Coordinator
- What is in progress, and by whom
- What was already decided
- Work produced
- Decisions made
Workbench
Connect your AI
- Claude
- ChatGPT
- Gemini
- Copilot
- Llama
+ many others
If you use multiple LLMs, our Router helps choose which is best for the task.
See how it fits your organisation.
Book a call with our team. We will show Cornerstone working on documents like yours, set out what it replaces and what it leaves in place, and take the questions your security and compliance teams will raise. No commitment at that stage.