The real cost of legal AI — and how to model it
Oct 24 2026 · Business
Licence fees are the small number. The cost that matters is verification time.
The visible cost of legal AI is the subscription; the real cost is the time to verify what it produces. Model it honestly: licence fee per seat, plus the minutes of lawyer time spent checking each output, multiplied by volume. A tool that saves ten minutes of drafting but adds eight minutes of checking saves almost nothing. The tools that pay are the ones that reduce total time to a defensible document, not just time to a first draft.
The honest equation
| Line | What to count |
|---|---|
| Licence | Per seat, per month |
| Verification | Lawyer minutes × volume |
| Rework | Time lost to a wrong output |
| Net | Time to a defensible document |
Why verification dominates
A first draft is cheap to generate and expensive to trust. Unless the tool grounds its output in sources, the checking time can exceed the drafting time it saved.
Written for legal professionals. Not a guarantee of accuracy — always verify every claim against its source, and let a named human sign off. Get the free handbook.