Kira vs Luminance: which AI is better for due diligence and contract review?
Answer in brief: Choose Kira by Litera for law-firm and corporate-development due diligence. It ships with 1,400+ pre-built smart fields, lets you train your own, provides collaborative review grids for M&A, real estate, banking and finance, and includes the Lito diligence assistant at no extra charge. Choose Luminance when the job is ongoing enterprise contracting: reviewing and negotiating inbound paper against playbooks and precedent, then giving legal, procurement and finance portfolio-wide visibility. Both are quote-only.
Top pick for diligence: Kira by Litera. Purpose-built for high-volume, high-stakes review, with every grid answer linked to its source contract. Visit Kira by Litera →
Top pick for enterprise contracting: Luminance. Review, negotiation and portfolio intelligence in one platform. Visit Luminance →
Independent research from vendor sites, checked November 9, 2026. Not hands-on testing. Accuracy and adoption figures are vendor claims.
Diligence engine vs contract intelligence: the comparison
| Factor | Kira by Litera | Luminance |
|---|---|---|
| Primary job | Extracting provisions across large document sets | Reviewing and negotiating contracts, plus portfolio insight |
| AI approach | Predictive, lawyer-trained extraction paired with generative AI | Specialist legal models with contractual context; Lumi applies your standards |
| Out-of-the-box | 1,400+ smart fields, plus fields you train yourself | Playbooks and templates turned into structured standards and checklists |
| Review surface | Collaborative review grids; Grid Chat for cross-document Q&A with cited answers | Luminance platform and Microsoft Word markups |
| Companion AI | Lito, included for Kira customers at no extra charge | Lumi |
| Works with | Microsoft 365, Litera Transact, HighQ, Intralinks | Microsoft Word; teams across legal, procurement, finance and sales |
| Vendor claims | 95%+ precision on target provisions; 70% of the top 50 global law firms rely on Litera | 1,000+ enterprises; 75% reduction in repetitive review work |
| Pricing | Custom enterprise quote | Custom, demo-led |
Kira: turn the data room into a deliverable
Litera describes due diligence as the stage where deals slow down and margins disappear, and pitches Kira as the fix. Kira surfaces critical provisions across thousands of contracts, lets you query an entire set in plain language, and turns the findings into export-ready summaries and reports. Lito starts structured reviews from grid templates built by Litera's in-house lawyers, and can produce a diligence report from Kira's extractions. Because Kira connects to Intralinks and HighQ, it slots into existing deal workflows.
Luminance: bring your own history to every negotiation
Luminance's strength is the live contract. It shows what you accepted before with the same counterparty, applies fallback positions and gold-standard clauses, generates redlines in approved language, and finds gaps in your playbook. Discover then answers portfolio questions about auto-renewals, obligations and commercial opportunities across the business.
When to pick which
- M&A, real estate or finance diligence at a law firm: Kira.
- Corporate development reviewing a target's contracts: Kira.
- In-house legal negotiating hundreds of supplier and customer agreements: Luminance.
- Enterprise that wants contract answers for procurement and finance: Luminance.
- Firm already on Litera products: Kira, with Lito included at no extra charge.
Pricing model
Neither publishes prices. Kira is a custom enterprise quote from Litera, and Lito is included for Kira customers at no extra charge. Luminance is priced through a demo-led sales process. More detail is on our pricing page.
FAQ
Is Kira still available?
Yes. Kira continues under Litera as its contract-intelligence engine for review and due diligence.
Can Luminance do due diligence?
Luminance analyzes whole contract portfolios through its Discover module. Litera positions Kira specifically for transactional due diligence, with review grids and smart fields.
Which is better for redlining a single contract?
Luminance. It marks up contracts against your playbooks and precedent, including in Word. Kira is built for extraction across many documents.
Do Kira's answers cite sources?
Yes. Litera says every answer links back to the source contract, including answers from Grid Chat's cross-document Q&A.
Keep comparing
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Visit Kira by Litera → · Visit Luminance →