Relativity vs CoCounsel by Thomson Reuters
AI Legal Tools pricing comparison · 2026
Relativity pricing ranges from $500–$25000/month, while CoCounsel by Thomson Reuters ranges from $50–$500/user/month. These products use different pricing models (Per-seat subscription vs ), so a direct price comparison isn't meaningful — costs depend on usage volume and mix.
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Relativity and CoCounsel by Thomson Reuters both operate in the ai legal tools category. This page compares their list pricing.
Plan-by-Plan Pricing
| Plan | Relativity | CoCounsel by Thomson Reuters |
|---|---|---|
| RelativityOne Pay As You Go | Free | $75 /per task |
| RelativityOne Flex Commit (1-Year) | Free | $220 /user/month |
| RelativityOne Flex Commit (3-Year) | Free | $225 /user/month |
| All Access | — | $500 /user/month |
| Westlaw Precision with CoCounsel | — | $428 /user/month |
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%.
CoCounsel by Thomson Reuters
3 scenarios$225/month ($2,700/year)
Solo Practitioner with CoCounsel Core
for CoCounsel Core. No seat minimums, no implementation fees. Cancel anytime on monthly billing.
$2,140/month ($25,680/year)
5-Lawyer Small Firm with Westlaw Integration
for 5 seats (5 x $428). Pricing may vary based on jurisdictions needed and contract negotiations with Thomson Reuters. Includes full Westlaw access and CoCounsel AI for all lawyers.
$7,500/month ($90,000/year)
15-Lawyer Mid-Size Firm with CoCounsel All Access
for 15 seats (15 x $500). Volume discounts may be available for 10+ users. Includes unlimited AI usage, full case law access, and CARA AI search.