Legal · head to head
Luminance vs Secure Privacy
Luminance
Legal
Machine learning contract analysis for review, negotiation and compliance
- From
- On request
- Rated
- -
Secure Privacy
Legal
Consent management and website privacy compliance priced per domain by monthly consent volume
- From
- Free
- Rated
- -
The short version
- Only Secure Privacy has a free tier, so it costs nothing to try first.
- Each has a real cost: Luminance no independent evaluation of its accuracy has been published, and it did not take part in the Vals Legal AI Report, so buyers have only vendor-produced evidence to work from.; Secure Privacy consent allowances are the real constraint and they are per domain, so a high traffic site on the Business tier can burn through 50,000 consents well before month end and be pushed to a tier that costs more than four times as much.
- They diverge on capability: Luminance covers Anomaly detection, Secure Privacy covers Cookie scanning.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Luminance and Secure Privacy actually diverge.
| Attribute | Luminance | Secure Privacy |
|---|---|---|
| Starting price | On request | Free |
| Pricing model | quote | Per domain per month by consent volume |
| Free tier | No | Yes |
| Platforms | Web, Windows | Web |
Identical on both: user rating (Not yet rated), category (Legal).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Luminance
- Anomaly detection
- Contract negotiation
- Due diligence review
- Multi-language analysis
- Document comparison
Only in Secure Privacy
- Cookie scanning
- Automatic cookie blocking
- Legal templates
- Data subject access requests
- IAB TCF 2.3
- Cross-domain consent
- Scan behind login
- Audit logs and SSO
What people use each for
The jobs each tool is most often brought in to do.
Luminance
- In-house teams auditing a contract estate for a specific exposure such as change of controlnot Secure Privacy
- Procurement and compliance functions reviewing supplier agreements at scalenot Secure Privacy
- Transaction teams reviewing large contract populations against a deal deadlinenot Secure Privacy
- Negotiation teams applying a standard playbook consistently across many counterpartiesnot Secure Privacy
Secure Privacy
- A mid-sized ecommerce site that wants published pricing it can budget against rather than an enterprise quote cyclenot Luminance
- An agency running consent across many client domains that needs branding removed and per-domain billingnot Luminance
- A company that needs both a consent banner and maintained privacy and cookie policy templates without retaining a law firmnot Luminance
- A business receiving occasional deletion and access requests that wants them tracked in the same tool rather than in a shared inboxnot Luminance
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Luminance
- No independent evaluation of its accuracy has been published, and it did not take part in the Vals Legal AI Report, so buyers have only vendor-produced evidence to work from.
- The one named accuracy benchmark, ContractIQ Bench, was built, run and scored by Luminance on a dataset it has not released, against comparison models it does not name.
- Value scales with document volume, so an organisation reviewing tens rather than thousands of contracts will not recover the licence cost.
- Output still requires qualified review, so it reduces reading time rather than removing the lawyer, and staffing plans that assume otherwise fail.
- Pricing is not published, so cost per matter cannot be modelled until after a sales process and a proof of concept.
Secure Privacy
- Consent allowances are the real constraint and they are per domain, so a high traffic site on the Business tier can burn through 50,000 consents well before month end and be pushed to a tier that costs more than four times as much.
- Billing is per domain, which makes multi-brand organisations and agencies pay linearly with domain count even when the configuration is identical across all of them.
- There is no data discovery or records of processing at enterprise depth, so it documents website consent rather than a privacy programme, and organisations facing a regulator will still need something more.
- Automatic cookie blocking is not available on the free tier, so the free plan cannot deliver the compliance behaviour that is the reason to install a consent tool in the first place.
- Single sign-on and audit logs appear only on the 249 dollar Advanced tier, which puts basic enterprise access control behind a per-domain price that is punishing for anyone with more than a couple of sites.
Pricing, plan by plan
Luminance
On request- Luminance$undefined/year
- Enterprise licensing quoted per organisation
- Scoped by user count and document volume
- Proof of concept normally run before contracting
Secure Privacy
Free- FreeFree
- Up to 10 domains
- 500 consents per month
- 1 legal template
- Small$15/month
- Per domain
- Unlimited domains
- 5,000 consents per month
- Business$59/month
- Per domain
- 50,000 consents per month
- Over 40 legal templates
- Advanced$249/month
- Per domain
- 5 million consents per month
- Audit logs
Which should you pick?
Choose Luminance if
- You need anomaly detection.
- You work on Web, Windows.
- You also want contract negotiation.
Choose Secure Privacy if
- You need cookie scanning.
- You want to start without paying.
- You also want automatic cookie blocking.
Questions people ask
- Is Luminance or Secure Privacy better?
- Neither clearly leads. Luminance starts at On request and Secure Privacy at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Luminance or Secure Privacy?
- Secure Privacy has a free tier; the other does not. Paid plans start at On request for Luminance and Free for Secure Privacy.
- Does Luminance or Secure Privacy run on more platforms?
- Luminance runs on Web, Windows. Secure Privacy runs on Web.
- Can I use Secure Privacy for free?
- Yes. Secure Privacy has a free tier, so you can try it without paying. Luminance starts at On request.
- What is Luminance best used for?
- Luminance is most often used for in-house teams auditing a contract estate for a specific exposure such as change of control, procurement and compliance functions reviewing supplier agreements at scale, transaction teams reviewing large contract populations against a deal deadline, negotiation teams applying a standard playbook consistently across many counterparties. Of those, in-house teams auditing a contract estate for a specific exposure such as change of control and procurement and compliance functions reviewing supplier agreements at scale are not what Secure Privacy is typically brought in for.
- What can Luminance do that Secure Privacy cannot?
- Luminance covers Anomaly detection, Contract negotiation, Due diligence review, Multi-language analysis. Secure Privacy covers Cookie scanning, Automatic cookie blocking, Legal templates, Data subject access requests.
Answered from the vendors’ own pages
Luminance: Is Luminance's accuracy independently verified?
No independent verification has been published. It did not participate in the Vals Legal AI Report, the main lawyer-baselined benchmark, and the only named benchmark in its materials is one it built and ran itself. Treat the published figures as vendor claims and run a proof of concept on your own documents.
Secure Privacy: What is a consent, for billing purposes?
A recorded consent decision from a visitor. Because returning visitors can re-consent, consent counts do not map cleanly to unique visitors, and this is the most common source of unexpected tier upgrades.
Luminance: What do the ninety per cent time-saving claims mean?
They are unattributed marketing figures about time and cost rather than accuracy, published without methodology, dataset or baseline. They are not a measure of how often the software is right.
Secure Privacy: Is the free plan usable?
For evaluation only. It caps at 500 consents a month and does not include automatic cookie blocking.
Luminance: Who backs Luminance?
It launched in 2016 with backing from Invoke Capital, the fund founded by Mike Lynch, and has since raised further rounds led by March Capital and Point72 Private Investments.
Secure Privacy: Does it handle data subject requests?
Yes, from the Business tier at 59 US dollars per domain per month. The Small tier does not include it.
Secure Privacy: Can it replace OneTrust?
For website consent and simple request handling, yes. For data discovery, records of processing and vendor risk, no.
Related pages
More on Secure Privacy
Other head to heads
- Luminance vs Spellbook
- Luminance vs Everlaw
- Luminance vs Relativity
- Luminance vs Ironclad
- Luminance vs Harvey
- Luminance vs Litera
- Luminance vs Westlaw
- Luminance vs LexisNexis
- Luminance vs DISCO
- Luminance vs Logikcull
- Luminance vs NetDocuments
- Luminance vs iManage
- Luminance vs Intapp
- Luminance vs Litify
- Luminance vs Rocket Matter
- Luminance vs Tabs3
- Luminance vs Cookiebot
- Luminance vs iubenda
- Luminance vs Didomi
- Luminance vs Smokeball
- Luminance vs Docketwise
- Secure Privacy vs Spellbook
- Secure Privacy vs Everlaw
- Secure Privacy vs Relativity
- Secure Privacy vs Ironclad
- Secure Privacy vs Harvey
- Secure Privacy vs Litera
- Secure Privacy vs Westlaw
- Secure Privacy vs LexisNexis
- Secure Privacy vs DISCO
- Secure Privacy vs Logikcull
- Secure Privacy vs NetDocuments
- Secure Privacy vs iManage
- Secure Privacy vs Intapp
- Secure Privacy vs Litify
- Secure Privacy vs Rocket Matter
- Secure Privacy vs Tabs3
- Secure Privacy vs Cookiebot
- Secure Privacy vs iubenda
- Secure Privacy vs Didomi
- Secure Privacy vs Smokeball
- Secure Privacy vs Docketwise