For law firms
Every firm is being urged to adopt AI. For a solicitor that advice has a catch, because the cloud tools send privileged client data to servers you do not control. Arsenale is the alternative: a small computer that runs capable AI entirely in your office. No cloud, no subscription, owned outright.
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Most firms cannot safely use the AI everyone is talking about. Client confidentiality and the SRA's expectations on client data make sending privileged matters to a cloud service a real problem.
Arsenale removes the problem by removing the cloud. The AI runs on a small computer in your office. Client matters, contracts, precedents and correspondence stay on the device. There is no monthly fee and no metering.
It already does the deadline-critical work in conveyancing, drafts and reviews documents for a fee earner to approve, and, most importantly, tells you when it is not sure rather than inventing an answer.
Practical, on-the-machine work, with a person reviewing and signing off.
Reads the contract, search and mortgage offer, then computes the exact dates with the legal authority behind each: the SDLT filing window, OS1 priority, search validity, completion. It flags the risks, such as a search gone stale or an offer expiring before completion.
Letters, contracts, attendance notes and standard forms, drafted from your matter details for a fee earner to review and sign off.
Read a lease, contract or report and get back the points worth questioning, with the relevant clauses highlighted.
Property and registry data pulled directly from official government sources, not guessed. Every figure carries its source and the date it was retrieved.
Per-matter diaries and chase tasks, kept separate so one matter never bleeds into another.
Draft client-intake and anti-money-laundering checks, prepared for your review.
Ask it for a date and withhold the document that sets that date, and it will say it cannot compute the answer. It will not invent one. For deadline-critical, negligence-exposed work, that single behaviour is the difference between a tool you can rely on and one you cannot.
It is the first thing we will show you in a demo. Give it a real matter with something missing, and watch it decline to guess.
An honest, head-to-head look at processing a privileged matter on Arsenale versus a cloud AI assistant.
| Arsenale | A cloud AI assistant | |
|---|---|---|
| Where client data lives | On the device, in your office. It never leaves. | On the provider's servers, often overseas. |
| Confidentiality and privilege | Privileged matters stay in the building. | Privileged data sent to a third party. |
| Who signs off the work | The fee earner. It drafts, you approve. | Varies, and easy to over-rely on. |
| If a document is missing | It says it cannot be sure, and stops. | It will often answer confidently and wrongly. |
| Cost | One-off purchase, owned outright. Optional support licence. | Subscription, metered, trending up. |
| If the vendor changes or leaves | It keeps working. No cloud dependency, no kill switch. | You renegotiate or lose access. |
We are building the next step. The agent prepares the SDLT return and the associated payment instruction, ready for you to authorise, through regulated payment partners. You authorise every payment. The AI never moves client money. This is in development and will arrive as a managed update, with the same review-and-approve gate as everything else the system does.
That is the point of it. Because the AI runs on a device you own, in your office, privileged client matters never leave the building. The fee earner reviews and signs off the work, and nothing is sent or filed without a person authorising it.
It is built not to. When it lacks the document it needs, it says so rather than guessing. We will demonstrate this directly, because it is the behaviour that matters most for legal work.
No. It drafts and prepares; a fee earner reviews, approves and sends. Payments, when that feature arrives, are prepared for your authorisation through regulated partners and are never moved by the AI.
£2,499 one-off, owned outright, with no per-use metering. An optional annual licence covers ongoing model and software updates. See the pricing page for detail.
The appliance keeps working. There is no cloud back-channel and no kill switch. What you have paid for remains yours and remains functional.
No. It arrives configured. Switch it on and use it. There is no command line and no setup project.
It is strongest in conveyancing today, and it drafts, reviews and tracks across general practice. It is not a litigation case-law research engine to advocate standard, and it will tell you where its limits are.
Yes. In a demo we can load one of your own matters on the device, and you will see it processed without anything leaving the room.
A demo takes about fifteen minutes, in person, with no obligation. Bring a matter and watch it run on the device, with nothing leaving the room.
More on how the platform keeps data in the building: the trust page.