Drafts, reviews and redlines contracts inside Microsoft Word.
Legal, Finance & HR
Luminance
Contract review, negotiation and contract management for in-house legal teams.
3.7our rating
Paid
Quick take
- A contract platform, not just a drafting helper: review, negotiation, a searchable contract store and workflows in one.
- Strongest for big in-house teams and due diligence. Overkill for a small firm that just wants redlines.
- No public pricing and no free trial. Expect an enterprise sales process.
- Users mention a learning curve and some manual tagging on unusual contracts.
What is Luminance?
Luminance is an AI contract platform started by Cambridge University researchers. It reads contracts, flags clauses that break your standard positions and suggests changes in Word during negotiation (Negotiate). It also stores and searches your whole contract portfolio to surface risks, renewals and obligations (Discover), and runs workflows from contract request to signature (Automate). It is used across legal, procurement, sales and HR teams, and says more than 1,000 organisations are customers.
Pick Luminance if you are a larger in-house legal team that wants AI review plus a contract repository and approval workflows in one product. It made its name in M&A due diligence and is still strong there. Spellbook is simpler and cheaper if you only need AI help drafting and redlining in Word. Harvey is broader for law firms doing research and drafting across practice areas.
The catch: it is enterprise software. There is no public pricing or free trial, users report a learning curve and some manual tagging on unusual contracts, and it takes real setup before the portfolio features pay off.
Who's using it, and who it's for
- In-house legal teams
- Procurement teams
- Law firms
- Compliance teams
Mid-sized and large in-house legal teams that negotiate and manage a high volume of contracts.
Key features
Negotiate
Reviews incoming contracts against your playbook and suggests redlines in Word.
Discover
Search and analyse your whole contract portfolio for risks, obligations and renewal dates.
Automate
Workflows from contract request through approval to signature.
Due diligence
Bulk review of data rooms to spot unusual or risky clauses fast.
Luna assistant
Ask questions about a contract or your portfolio in plain English.
How we rate it
3.7 / 5
Our rating
From using the tool ourselves. The average of the five scores.
- Ease of use
- 3.5
- Features
- 4.5
- Output quality
- 4.0
- Value for money
- 2.5
- Speed & reliability
- 4.0
How quickly someone non-technical gets value from it.
How completely it covers its own job, and how well the pieces fit together.
How good the results are before you fix them.
What you get for the price, including the free plan.
How fast it is and how often it falls over.
Luminance pricing
- Our pick
Enterprise
Custom
Legal teams buying a full contract platform.
- Negotiate, Discover and Automate modules
- SSO and enterprise security
- Onboarding and support
Which plan should you pick?
There is one route in: book a demo and get a quote. Ask which modules you actually need, since many teams only need Negotiate to start.
Prices in USD unless noted, checked 22 October 2026. Vendors change plans often, so confirm on their site before you buy.
Best use cases
Ways Luminance can slot into your week.
- 1
Speed up sales contracts
Let sales or procurement run standard contracts through Luminance, with only flagged deviations going to legal.
- 2
Audit your contract portfolio
Load existing contracts and find every change-of-control or auto-renewal clause before a deal or price rise.
- 3
Run due diligence
Review a target company's contracts in bulk and pull out the risky ones for a lawyer to read.
- 4
Track renewals and obligations
Get reminders before key dates so contracts don't roll over unnoticed.
How it fits your tech stack
It replaces or sits alongside a contract management system, with a Word add-in for negotiation so lawyers and business teams can work in the documents they already use.
Connects to
- Microsoft Word
- Microsoft Outlook
Pros and cons
Pros
- Covers review, negotiation, storage and workflow in one product
- Strong record in M&A due diligence
- Useful beyond legal: procurement, sales and HR can use it
- Enterprise security certifications
Cons
- No public pricing and no free trial
- Learning curve, and some manual tagging on non-standard contracts
- Setup time before the portfolio features pay off
- Too heavy and costly for small firms
Luminance alternatives
The closest alternatives to Luminance in the library, best rated first.
DataSnipper
4.0
Best for vouching and tick-and-tie in Excel
Compare with Luminance
Paradox
4.0
Best for booking interviews automatically
Compare with LuminanceSpellbook
3.9
Best for reviewing and redlining contracts in Word
Compare with Luminance
Booke AI
3.8
Best for categorising bank feed transactions
Compare with Luminance
Why it made the list
It combines AI contract review with a contract repository and workflows, which most AI drafting tools leave out.
Luminance FAQ
How much does Luminance cost?
Pricing isn't published; check the vendor's site for a quote. Prices checked 22 October 2026 against Luminance's pricing page.
Is Luminance free?
No. Pricing isn't published; check the vendor's site for a quote.
What is Luminance best for?
Luminance is best for high-volume contract negotiation, finding risks and renewal dates across all your contracts and M&A due diligence. Mid-sized and large in-house legal teams that negotiate and manage a high volume of contracts.
What are the best Luminance alternatives?
The closest alternatives are DataSnipper, Paradox, Spellbook and Booke AI. DataSnipper is best for vouching and tick-and-tie in Excel.
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