Buying AI Legal Assistant once for a larger company

You are assembling a document pack by hand: pulling the facts, rewriting the timeline, chasing the deadline list, and routing the escalation path from memory. AI Legal Assistant turns that work into action plans and document drafts, with deadline and evidence checklists attached so the next person can pick up the file without a briefing call.

Procurement reads the purchase differently from the people doing the work. They are not buying a monthly subscription that grows with each seat; they are buying one decision, made once, with a defined tier. That is why the lifetime shape matters here: you can size the tier against the team you have now rather than against headcount you might add next quarter.

So the buyer's job is to name the work in scope, count the people who touch it, and choose the tier that covers that count. You are not shopping for the broadest possible assistant; you are buying a drafting and checklist tool that your team runs on files, then handing the output to someone qualified to review it.

Cheaper tiers are usually cheaper because they bound something: usage, seats, or how the model behind the draft is supplied. Before you pick the bottom of the list, map each of your three or four routine document types against that tier and check whether the drafting, checklists and routing all still apply to the volume you actually produce.

The BYO key lifetime tier is the one enterprise teams often overlook. It sits in the list because some organisations already hold a model key and would rather route the assistant through that than through anything bundled. If your security team insists on a key you control, this tier is the one to read closely, and the Personal tier may not suit you at all.

Ask what happens when the person who owns the tier leaves. A lifetime purchase tied to one named seat is a support problem later. Work out in advance how many people need access, whether a shared working document can hold the output, and who reviews the drafts before they leave the building, so the tier you buy still fits after a staffing change.

What worries reviewers is the gap between a useful draft and a legal position. The tool produces plans, drafts, checklists and escalation routes, and that is preparation work. It is not a signature and it is not representation, so your internal process has to name the person who reads the output before it is used or sent.

Then there is the verifiable detail. Local rules shift, agencies rename themselves, and filing formats change, so anything the assistant writes about a deadline or a form needs checking against the current official source. Build that check into the workflow rather than trusting a checklist item on its own, and make it clear who owns that check on each matter.

Some files simply should not go through a drafting tool first. Where a matter carries real financial, regulatory or court risk, a qualified lawyer should handle it, and the assistant can prepare the ground rather than take the decision. Say that plainly inside the team, so nobody treats a tidy draft as an approval.

Put the three tiers side by side against one question: how many people, doing what volume, with whose model key. Personal lifetime serves a single person. Professional lifetime fits a small group working on shared files. BYO key lifetime fits where the key must come from your side. That comparison tells you more than any feature list.

Alongside that, compare the alternatives on the thing you are escaping. Subscription tools price per seat, and the bill moves every time you hire. A single lifetime tier removes the renewal question. Weigh that against what the tier does not include, and be honest about whether your team can live inside those limits for the next few years of work.

Finally, compare against your process, not against a competitor. If your drafters already follow a review step, the assistant slots in as the preparation layer. If there is no review step, the first purchase is that process, not the tool. Decide that before procurement opens the purchase, because the tier cannot supply the oversight for you.