AI for Law Firms
Your firm’s expertise, in your firm’s own AI tools.
Casteo helps law firms build AI they own — grounded in their own precedents, shaped to their practice areas, and designed around their confidentiality obligations. Not a seat licence on somebody else’s chatbot.
What your firm can build
Contract and document review
Tools that read contracts, disclosure bundles and due-diligence packs at volume — pulling out clauses, obligations, dates and risks, with every answer traced back to the page it came from so a fee-earner can check it in seconds.
Research and drafting on your precedents
Assistants grounded in your own precedent bank and closed matters, so a first draft starts from how your firm has argued before — in your house style, with your standard positions — instead of from a general model’s best guess.
Intake, conflicts and triage
Agents that take first-line client information, check it against your conflicts and matter systems, and hand the right team a file that is already assembled — so the routine part of opening a matter stops consuming chargeable hours.
Privilege is the constraint we design around.
Client confidence is not a setting to be switched on later. We build so that matter data stays where your obligations require it, access follows the controls your firm already enforces, and nothing you hold becomes training material for anyone else’s model.
How we build it with you
Start from one real bottleneck
We pick a single task that costs your fee-earners hours and has an output someone can check — not a firm-wide AI strategy that never reaches a matter.
Build it on your own material
The tool is built against your documents, templates and definitions, then measured against work your firm has already done — so you can see where it agrees with your lawyers and where it does not.
Hand over the keys
You end up with a working tool, the reasoning behind how it was built, and the ability to run and extend it — with us on call rather than sitting in the critical path of every matter.
Built in partnership with a FinTech law firm.
These tools are developed alongside a law firm specialising in FinTech and financial-services regulation. They set the bar a tool has to clear before a lawyer will rely on it — what has to be checkable, what has to be recorded, and where a model’s answer is simply not good enough to put in front of a client.
What your firm keeps
No AI hires.
We bring the machine-learning side. Your people stay lawyers.
Built around your process.
The tool fits how the firm already works, rather than asking it to rebuild around a product.
Yours to keep.
The tool, its outputs and the understanding behind it stay with the firm.
Tell us where the hours go.
Describe the task that eats your firm’s time, and we will tell you honestly whether AI is the right answer for it.