Harvey vs Kira Systems vs Luminance vs Spellbook
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
Harvey
AI legal assistant for law firms — trained on legal data, used by the...
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Kira Systems
AI contract review for M&A and due diligence
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Luminance
Cambridge-built legal AI for contract review and due diligence.
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Spellbook
AI for in-house and transactional lawyers
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| RECATOOLS Score | 8 / 10 | 7.1 / 10 | 7.3 / 10 | 7 / 10 |
| Capability | ||||
| Value for money | ||||
| Ease of use | ||||
| ASEAN readiness | ||||
| API quality | ||||
| Pricing | Enterprise | Enterprise | Enterprise | Subscription |
| Free tier | — | — | Free trial for evaluation | Free 7-day trial |
| Paid from | Enterprise custom pricing (no public rates; est. ~$1,000-$2,000 per seat/month with seat minimums) | Enterprise custom pricing | Enterprise custom pricing | $59/month (Pro) |
| Has API | ✗ | ✗ | ✓ | ✗ |
| Open source | ✗ | ✗ | ✗ | ✗ |
| Free to use | ✗ | ✗ | ✗ | ✗ |
| Users | 100,000+ lawyers on platform; 25,000+ custom agents; majority of AmLaw 100 | Majority of Am Law 100 firms | 600+ law firms and corporations | 10000+ legal professionals |
| Founded | 2022 | 2011 | 2015 | 2020 |
| Maker | Winston Weinberg, Gabriel Pereyra | Litera (acquired 2021) | Emily Foges, Felim Mackle | Scott Stevenson |
| Verdict | Harvey is the enterprise legal-AI leader by revenue and adoption — $300M ARR by mid-2026, an $11B valuation, and most of the AmLaw 100 on the customer list. For large firms and in-house teams it delivers genuinely better... |
Kira Systems, now part of Litera, is a long-established AI contract-analysis platform that extracts and analyses provisions across thousands of contracts — the workhorse for due diligence, M&A, and large-scale review... |
Luminance pairs unsupervised machine learning with a large Cambridge-built legal language model to read contracts, due-diligence sets, and compliance documents without per-client retraining — a real differentiator agains... |
Spellbook brings AI contract review and drafting into Microsoft Word, suggesting clauses, flagging risks, and redlining against playbooks. It suits small and mid-size law firms and in-house counsel who want legal AI with... |
| Full review → | Full review → | Full review → | Full review → |
Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.