Is Harvey or Luminance better?

Neither clearly leads. Harvey starts at On request and Luminance at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Harvey or Luminance?

Harvey starts at On request and Luminance at On request.

Does Harvey or Luminance run on more platforms?

Harvey runs on Web. Luminance runs on Web, Windows.

What is Harvey best used for?

Harvey is most often used for an amlaw 100 or 200 firm wanting ai-assisted due diligence review across large contract sets, a large corporate legal department needing firm-tuned drafting on its own precedent library, a litigation practice wanting ai research assistance integrated directly with its document management system, a firm large enough to absorb a 25-seat minimum and enterprise contract cost, evaluating ai tools at biglaw scale. Of those, an amlaw 100 or 200 firm wanting ai-assisted due diligence review across large contract sets and a large corporate legal department needing firm-tuned drafting on its own precedent library are not what Luminance is typically brought in for.

What can Harvey do that Luminance cannot?

Harvey covers Legal research assistant, Contract analysis, Document drafting, Workflow-specific tools. Luminance covers Anomaly detection, Contract negotiation, Due diligence review, Multi-language analysis.

Legal · head to head

Harvey vs Luminance

Harvey

Legal

AI research and drafting platform for large law firms, sold on enterprise-only seat pricing with no self-service tier and reported contracts from roughly $50,000 to $360,000 a year

From: On request
Rated: -

Full review Website

Luminance

Legal

Machine learning contract analysis for review, negotiation and compliance

From: On request
Rated: -

Full review Website

The short version

Each has a real cost: Harvey there is no published pricing anywhere, and no self-service tier at all, so even qualifying for a quote requires an enterprise sales process most small and mid-size firms cannot justify starting.; 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.
They diverge on capability: Harvey covers Legal research assistant, Luminance covers Anomaly detection.
Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Harvey and Luminance actually diverge.

Attributes where Harvey and Luminance differ
Attribute	Harvey	Luminance
Platforms	Web	Web, Windows

Identical on both: starting price (On request), pricing model (quote), free tier (No), 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 Harvey

Legal research assistant
Contract analysis
Document drafting
Workflow-specific tools
DMS integration
Firm-tuned deployment

Only in Luminance

Anomaly detection
Contract negotiation
Due diligence review
Multi-language analysis
Document comparison

What people use each for

The jobs each tool is most often brought in to do.

Harvey

An AmLaw 100 or 200 firm wanting AI-assisted due diligence review across large contract setsnot Luminance
A large corporate legal department needing firm-tuned drafting on its own precedent librarynot Luminance
A litigation practice wanting AI research assistance integrated directly with its document management systemnot Luminance
A firm large enough to absorb a 25-seat minimum and enterprise contract cost, evaluating AI tools at BigLaw scalenot Luminance

Luminance

In-house teams auditing a contract estate for a specific exposure such as change of controlnot Harvey
Procurement and compliance functions reviewing supplier agreements at scalenot Harvey
Transaction teams reviewing large contract populations against a deal deadlinenot Harvey
Negotiation teams applying a standard playbook consistently across many counterpartiesnot Harvey

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Harvey

There is no published pricing anywhere, and no self-service tier at all, so even qualifying for a quote requires an enterprise sales process most small and mid-size firms cannot justify starting.
25-seat minimums put it structurally out of reach for solo, boutique and most mid-size firms regardless of interest.
Reported additional platform fees on top of the headline per-seat licence mean the effective total cost is materially higher than the quoted seat price alone suggests.
As a well-funded, fast-growing AI vendor, its product and pricing model are still evolving quickly, which is a real risk for a firm signing a multi-year enterprise contract now.
Being trained and marketed specifically for BigLaw workflows means smaller firms evaluating it are comparing themselves against a product that was not built or priced with them in mind.

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.

Pricing, plan by plan

Harvey

On request

Enterprise (BigLaw)$undefined/year
- No self-service signup, quote-only via sales
- 25-seat minimums commonly reported
- Reported per-seat cost roughly $1,000-2,000/month depending on usage tier

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

Which should you pick?

Choose Harvey if

You need legal research assistant.
You also want contract analysis.

Harvey review

Choose Luminance if

You need anomaly detection.
You work on Web, Windows.
You also want contract negotiation.

Luminance review

Questions people ask

Is Harvey or Luminance better?: Neither clearly leads. Harvey starts at On request and Luminance at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Harvey or Luminance?: Harvey starts at On request and Luminance at On request.
Does Harvey or Luminance run on more platforms?: Harvey runs on Web. Luminance runs on Web, Windows.
What is Harvey best used for?: Harvey is most often used for an amlaw 100 or 200 firm wanting ai-assisted due diligence review across large contract sets, a large corporate legal department needing firm-tuned drafting on its own precedent library, a litigation practice wanting ai research assistance integrated directly with its document management system, a firm large enough to absorb a 25-seat minimum and enterprise contract cost, evaluating ai tools at biglaw scale. Of those, an amlaw 100 or 200 firm wanting ai-assisted due diligence review across large contract sets and a large corporate legal department needing firm-tuned drafting on its own precedent library are not what Luminance is typically brought in for.
What can Harvey do that Luminance cannot?: Harvey covers Legal research assistant, Contract analysis, Document drafting, Workflow-specific tools. Luminance covers Anomaly detection, Contract negotiation, Due diligence review, Multi-language analysis.

Answered from the vendors’ own pages

Harvey: Can a small firm buy Harvey?

In practice, no. There is no self-service tier, and reported 25-seat minimums and six-figure contract values put it out of reach for most small and mid-size firms.

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.

Harvey: How much does Harvey actually cost?

Nothing is published. Third-party reporting estimates $1,000-2,000 per seat per month and enterprise contracts from roughly $360,000 to over $1.5 million a year including platform fees.

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.

Harvey: Does Harvey replace Westlaw or LexisNexis?

No. It is an AI research, drafting and review layer, typically deployed alongside rather than instead of a primary legal research database.

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.

Harvey vs Luminance

Harvey

Luminance

The short version

Where they differ

What each one covers

Only in Harvey

Only in Luminance

What people use each for

Harvey

Luminance

Where each one falls short

Harvey

Luminance

Pricing, plan by plan

Harvey

Luminance

Which should you pick?

Choose Harvey if

Choose Luminance if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Harvey

More on Luminance

Keep looking

Other head to heads