The platform
Cornerstone is the knowledge layer. Workbench and Habitat are where you meet it.
Cornerstone holds what your organisation knows as typed, cited, supersedable facts. The AI receives exactly the context a question needs, so accuracy and token efficiency both improve as your knowledge grows.
Why teams buy it
Three things change on the day you switch it on.
Work faster
The answer, with its sources attached
Your people stop re-explaining the business to a machine that forgets, and stop trawling four systems for the document that holds the answer. The context is already there, already cited.
Found the right document 96.7% of the time, against 85% for the best competing method.
Trust the output
It can tell you when the answer isn't there.
A search index always has a nearest match, so on a question your documents cannot answer it returns its best guesses with exactly the same confidence.
On 49 questions our test corpus could not answer, Cornerstone declined 41 of them. The eight it got wrong were topically adjacent — close enough to something real to look answerable — and even then it returned the evidence it had found rather than asserting an answer.
Token efficiency
The same budget covers more work
Flat retrieval drags more text through the model with every question, so the more you know the more you pay. Cited facts break that link, and the cost per question stays predictable enough to plan against.
Around 98% fewer tokens than reading whole documents, inside a 1.1× cost band where file search swung 232×.
The core
Your knowledge, reduced to claims an AI can be held to.
Cornerstone distils what your organisation knows into individual facts. The shape of those facts is what makes everything else on this page possible.
Typed
A fact is a concept, a decision, a rule, a process or a reference — not a paragraph. The AI receives a claim it can act on rather than a page it has to interpret.
Cited
Every fact carries its source, its author, its date and its scope. An answer can be traced back to what your organisation actually wrote, which is the difference between a correction and an incident.
Supersedable
When the business changes its mind, the old fact is superseded and dated rather than silently overwritten. What the AI reads is what is true now; what was true then is still on the record.
Workbench · where you act
Workbench is where your people work.
Ask, draft and decide with the organisation's knowledge already underneath the conversation, instead of pasting it in and re-explaining it every session.
EU client data stays in EU regions, and Frankfurt is the default. The residency addendum has to be attached to any EU contract — that rule was set by Legal in March and the default region was an architecture decision in June.
One thing to flag: the rule predates the Milan region, so it may be worth confirming with Legal rather than assuming it still means Frankfurt only.
Productive on day one
Sign in and the tools are already there — no MCP servers to wire up, no tokens to paste, no command line. That friction is exactly what stops non-technical people getting value out of AI tooling.
Your model, your key
Bring your own frontier model. No lock-in to a vendor, no token markup, and no dependency on our inference — it is the path the product is designed around, not a concession.
Knowledge bound to the conversation
You choose which of your organisation's knowledge a given Workbench draws on. One venture, one matter, one client — and the other ones stop bleeding into it.
Habitat · where you see
Habitat is what your leadership sees.
Every idea and venture with its stage, its evidence and its health, as a portfolio you can read or a city you can glance at. Nothing quietly disappears when it goes wrong.
Select any building — a venture is a campus, one building per component.
Truthful by design
Failed ventures stay visible in the graveyard and stalling ones turn amber. Honest peripheral awareness of everything you have running, not a curated highlight reel.
A real stage model, carrying its evidence
A real stage model with entry, success and kill criteria, and gate reviews that carry their evidence — so “where is this up to?” has an answer that is not somebody’s opinion.
Reads from the systems of record
Work state, business context and verdicts come from the tools already in use. It is current because it is live, not because somebody maintained a deck.
How it fits together
Knowledge goes in once. Everything reads it.
One loop across the whole platform. Select any stage to see what it does.
The knowledge layer
Cornerstone
Your organisation's knowledge as typed, cited, supersedable facts. Each one carries its source, its author, its date and what it applies to — which is why an answer can be traced, and why a rule scoped to one region cannot come back as though it applied everywhere.
Pricing
Free for two users. £150 per user after that.
Enterprise-grade performance at every level. What changes as you grow is scale, deployment and support, never how well it works.
Foundation
1–2 Users
For a team that wants to find out whether this changes how they work.
- Cornerstone — your knowledge as typed, cited factsIncluded
- Workbench — the surface your team works inIncluded
- AI Coordinator — coordination built inIncluded
- Bring your own AI modelIncluded
- Vista — management and control planeIncluded
- Support — standardIncluded
Scale Up
3–50 Users
No set-up cost
For an organisation that has decided to run real work on it.
- Cornerstone — your knowledge as typed, cited factsIncluded
- Workbench — the surface your team works inIncluded
- AI Coordinator — coordination built inIncluded
- Bring your own AI modelIncluded
- Vista — management and control planeIncluded
- Single sign-on and role-based accessIncluded
- Support — standardIncluded
Enterprise
51+ Users
Scoped per deployment
For regulated, sovereign, or whole-estate deployment.
- Cornerstone — your knowledge as typed, cited factsIncluded
- Workbench — the surface your team works inIncluded
- AI Coordinator — coordination built inIncluded
- Bring your own AI modelIncluded
- Validator — checks delegated agent workIncluded
- Habitat — the live view across the estateIncluded
- Vista — management and control planeIncluded
- SSO, RBAC and classificationIncluded
- Support — named, with SLAIncluded
Add-ons
Available as paid add-ons on Foundation and Scale Up. Included as standard in Enterprise.
Validator
Add-onChecks delegated agent work before you rely on it, with every verdict on the record. For teams running multi-agent output in earnest rather than experimenting with it.
Habitat
Add-onThe live view across every project and initiative, built from the systems already in place — so it stays current because it is live, not because somebody maintained it.
No set-up cost, no platform fee, and no markup on the AI model you bring. More on pricing →
The fastest way to understand it is to point it at something you know.
Small teams use Cornerstone free. No card, no sales call, nobody to approve it.