How much does legal AI cost a UK law firm in 2026?
Most enterprise legal AI vendors, including Harvey, Legora and Luminance, do not publish prices, and Spellbook prices on a custom basis by team size. Scriptum publishes its prices: £79 per user per month for Starter and £119 for Pro, excluding VAT, billed monthly. For a mid-sized UK firm, a sensible budget starts with one practice group on published per-user pricing, measured by deal throughput.
"How much does it cost?" is the first question most managing partners ask about legal AI, and the hardest to answer. Most vendors route pricing through a sales process. Here is what is publicly known as of November 2026.
Who publishes legal AI prices?
| Vendor | Published pricing? | What is publicly stated |
|---|---|---|
| Scriptum | Yes | Starter £79, Pro £119 per user per month, excluding VAT, billed monthly. Ireland: €95 and €139. Firm plan: custom. |
| Harvey | No | Its website routes buyers to a demo request. |
| Legora | No | No prices on its website. |
| Spellbook | No | Custom pricing based on team size; seven-day free trial. |
| Luminance | No | Does not publish pricing. |
| Copilot for Legal | Through Microsoft | Available to Microsoft Copilot customers. |
As of November 2026. Sources are listed at the end of this article.
What about reported Harvey prices?
You will find many figures for Harvey online, mostly from leaked or second-hand reports, and they vary widely by firm size, seat count and products included. We have not repeated them here because none is published by Harvey. If you are evaluating Harvey, ask for the per-seat price, the minimum number of seats, the contract term and the renewal terms in writing.
The questions that matter more than the headline price
- Is there a seat minimum? A per-seat price means little if you must buy for the whole firm.
- How long is the commitment? Monthly billing lets you prove value before committing further.
- What does onboarding cost? Implementation and training fees can be significant.
- What happens at renewal? Ask for a cap on price increases.
- Do you keep what you build? If you leave, can you take your clause library, playbooks and history with you?
See exactly what you would pay. View Scriptum pricing or book a 30-minute demo.
How should a mid-sized firm budget for legal AI?
Start with one practice group, not the whole firm. For a corporate team of eight fee earners on Scriptum Pro, that is £952 a month, excluding VAT. Measure the result in deal throughput: how many more matters the team can run at the same headcount, and how quickly first drafts and markups turn around.
We would steer you away from measuring legal AI by hours saved. In a firm that bills by the hour, fewer hours on a matter is not a win on its own. More matters for the same team is. We set this out in why hours saved is the wrong metric.
Why Scriptum publishes its pricing
Mid-sized firms make decisions in partnership meetings, not procurement departments. A published price lets you build the business case before you speak to us, and makes it easier to trust what you are buying.
Sources
- Harvey: mid-sized firms page
- Legora: small and mid-sized firms page
- Spellbook: pricing
- Bind: Luminance pricing 2026
- LawSites: Microsoft launches Copilot for Legal
- Scriptum pricing
Common questions
How much does legal AI cost in the UK?
It varies widely, and most vendors do not publish prices. Scriptum's published prices are £79 per user per month for Starter and £119 for Pro, excluding VAT.
Does Harvey publish its pricing?
No. Harvey routes buyers to a demo request, and prices are quoted by its sales team.
Is legal AI affordable for a mid-sized firm?
Yes, if it is priced per user and you can start with one practice group. On Scriptum, a team of eight on the Pro plan costs £952 a month, excluding VAT, billed monthly.
Which legal AI tools have transparent pricing?
Few enterprise legal AI vendors publish their prices. Scriptum publishes per-user prices for its Starter and Pro plans on its website.