Side-by-side comparison · Legal, Finance & HR
Harvey vs Luminance vs Spellbook
Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.
Comparing 3 tools, the maximum.
At a glance
Pick it if: Large law firms and corporate legal teams that want one AI platform across research, drafting and due diligence.
Pick it if: Mid-sized and large in-house legal teams that negotiate and manage a high volume of contracts.
Pick it if: Commercial lawyers, small firms and in-house teams who review and draft contracts in Word every day.
Overview
| Attribute | Harvey | Luminance | Spellbook |
|---|---|---|---|
| In one line | AI platform for law firms and legal teams: research, drafting and document review. | Contract review, negotiation and contract management for in-house legal teams. | Drafts, reviews and redlines contracts inside Microsoft Word. |
| Pricing model | Paid | Paid | Paid |
| Starting price | See website | See website | See website |
| Free plan | No | No | No |
| Works with Claude Code | No | No | No |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | Harvey | Luminance | Spellbook |
|---|---|---|---|
| Overall rating | 3.8 | 3.7 | 3.9Winner |
| Ease of useHow quickly someone non-technical gets value from it. | 4.0 | 3.5 | 4.5 |
| FeaturesHow completely it covers its own job, and how well the pieces fit together. | 4.5 | 4.5 | 4.0 |
| Output qualityHow good the results are before you fix them. | 4.0 | 4.0 | 4.0 |
| Value for moneyWhat you get for the price, including the free plan. | 2.5 | 2.5 | 3.0 |
| Speed & reliabilityHow fast it is and how often it falls over. | 4.0 | 4.0 | 4.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | Harvey | Luminance | Spellbook |
|---|---|---|---|
| Access & platform | |||
| Free plan | No | No | No |
| Mobile app | – | – | – |
| Desktop app | – | – | Yes |
| Browser extension | – | – | – |
| API access | – | – | – |
| Teams & business | |||
| Team workspace | Yes | Yes | Yes |
| Enterprise plan or SSO | Yes | Yes | Yes |
| Connects to other apps | Yes | Yes | – |
| Open source or self-hosted | No | No | No |
| AI abilities | |||
| Works with your files | Yes | Yes | Yes |
| Understands images | – | – | – |
| Makes images | No | No | No |
| Makes video | No | No | No |
| Writes code | – | – | – |
| Runs agents or automations | Yes | Yes | Yes |
| Learns your brand or style | – | – | Yes |
| Works in many languages | Yes | Yes | – |
| Capabilities score | 6/ 17 | 6/ 17 | 6/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | Harvey | Luminance | Spellbook |
|---|---|---|---|
| Plans | EnterpriseOur pick Custom Large firms and legal departments buying for many lawyers. | EnterpriseOur pick Custom Legal teams buying a full contract platform. | Free trial Free for 7 days Testing it on real contracts before you talk price. |
Law FirmsOur pick Custom Private practice firms of any size. | |||
In-House Teams Custom Corporate legal departments. | |||
| Which plan to pick | There is one route in: book a demo and get a quote. Ask for a pilot with a small group on real matters, and get the per-seat price, minimum seats and renewal terms in writing before you commit. | 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. | Run the 7-day trial on contracts you actually negotiate, then ask for a quote. Get the per-seat price and any minimum term in writing, as third-party reports put prices anywhere from under US$200 to around US$350 per user a month. |
Key features
Pros and cons
| Attribute | Harvey | Luminance | Spellbook |
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Who each one is for
| Attribute | Harvey | Luminance | Spellbook |
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Questions people ask
Which is better, Harvey, Luminance or Spellbook?
Spellbook scores highest overall in our ratings (Harvey 3.8/5, Luminance 3.7/5 and Spellbook 3.9/5). Harvey is best for due diligence across large document sets and first drafts of memos, clauses and letters. Luminance is best for high-volume contract negotiation and finding risks and renewal dates across all your contracts. Spellbook is best for reviewing and redlining contracts in Word and drafting clauses and agreements from your templates.
Which is cheaper, Harvey, Luminance or Spellbook?
Harvey: Pricing isn't published; check the vendor's site for a quote. Luminance: Pricing isn't published; check the vendor's site for a quote. Spellbook: Pricing isn't published; check the vendor's site for a quote.
Which is easier to use, Harvey, Luminance or Spellbook?
Spellbook rates highest for ease of use in our scores. Commercial lawyers, small firms and in-house teams who review and draft contracts in Word every day.
How we compare
Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.
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