Relativity vs Kira Systems
AI Legal Tools pricing comparison · 2026
Relativity pricing ranges from $500–$25000/month, while Kira Systems ranges from $500–$5000/month. Kira Systems is typically 60% more affordable, though your actual cost depends on tier and team size.
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Relativity and Kira Systems both operate in the ai legal tools category. This page compares their list pricing.
Plan-by-Plan Pricing
| Plan | Relativity | Kira Systems |
|---|---|---|
| RelativityOne Pay As You Go | Free | $500 /month |
| RelativityOne Flex Commit (1-Year) | Free | $3.5K /month |
| 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%.
Kira Systems
3 scenarios$500/month ($5,000/year with annual billing)
Small Law Firm Due Diligence (5 users)
Add $2,000-$4,000 for initial implementation and training (one-time). Total first-year cost: $7,000-$9,000.
$3,500/month ($35,000/year with annual billing)
Mid-Size Corporate Legal Team (50 users)
Add $10,000-$20,000 for enterprise implementation, data migration from SharePoint, and custom model training (one-time). Ongoing training: $5,000/year. Total first-year cost: $50,000-$60,000.
$15,000
Global Financial Institution (500 users, on-premise)
$25,000/month ($180,000-$300,000/year) for custom licensing. Add $30,000-$50,000 for on-premise infrastructure and deployment (one-time), $20,000-$40,000 for custom model development (one-time), and $15,000-$50,000/year for infrastructure maintenance. Total first-year cost: $245,000-$440,000.