Relativity vs Luminance
AI Legal Tools pricing comparison · 2026
Relativity pricing ranges from $500–$25000/month, while Luminance ranges from $10–$100/user/month. Luminance is typically 99% more affordable, though your actual cost depends on tier and team size.
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Relativity and Luminance both operate in the ai legal tools category. This page compares their list pricing.
Plan-by-Plan Pricing
| Plan | Relativity | Luminance |
|---|---|---|
| RelativityOne Pay As You Go | Free | Free |
| RelativityOne Flex Commit (1-Year) | Free | Free |
| RelativityOne Flex Commit (3-Year) | Free | Free |
Cost at Scale
Total cost of ownership — licenses, implementation, and hidden costs included.
Relativity
6 scenarios$1,250
Boutique Litigation Firm (50GB active data)
$2,500/month for data hosting (50GB x $25-$50/GB). Add $1,750 for initial processing (50GB x $35/GB, one-time per matter). No per-user fees. Total annual cost for steady-state hosting: $15,000-$30,000 plus per-matter processing charges.
$7,500
Mid-Size Corporate Legal Department (500GB, Flex Commit)
$12,500/month ($90,000-$150,000/year) for committed data hosting at discounted rates. Early case assessment data at 33% rate saves $20,000-$40,000/year. Processing costs: $17,500 per 500GB collection (one-time per matter). Total first-year cost: $107,500-$207,500 depending on matter volume.
$50,000
Global Law Firm (5TB, 3-Year Flex Commit)
$100,000/month ($600,000-$1,200,000/year) for committed high-volume hosting with deepest discounts. Cold storage for archived matters at 25% rate provides significant savings. Processing costs: $175,000 per 5TB collection. Total annual cost: $775,000-$1,375,000 including estimated processing, plus potential third-party service provider markups of 20-50%.
Luminance
3 scenarios$3,000
Mid-Size Corporate Legal Department (20 users)
$6,000/month ($36,000-$72,000/year) based on estimated $50/user/month mid-range pricing. Add $5,000-$10,000 for initial setup, integration with SharePoint/iManage, and staff training. Total first-year cost: $41,000-$82,000.
$8,000
Large Enterprise with AI Agents (100 users)
$15,000/month ($96,000-$180,000/year) for base platform. Add 30-50% surcharge ($30,000-$90,000/year) for AI agent capabilities, plus $15,000-$25,000 for implementation and custom integrations. Total first-year cost: $141,000-$295,000.
$5,000
Global Law Firm (50 lawyers, on-premise)
$10,000/month ($60,000-$120,000/year) for licensing. Add $20,000-$40,000 for on-premise deployment and infrastructure setup (one-time), plus $10,000-$20,000/year for dedicated support and SLA. Total first-year cost: $90,000-$180,000.
Market Intelligence
Relativity
- Median annual cost
- $800
- Based on
- 61 deals
Luminance
- Median annual cost
- $999
- Based on
- 60 deals