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 $104–$639/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.
Relativity
Relativity is the industry-leading eDiscovery and legal analytics platform used by law fir
verified 7w ago
$800
$192K
CoCounsel by Thomson Reuters
Thomson Reuters does not publish a fixed price list for CoCounsel.
verified 5d ago
$800
$192K
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Pricing model unknown
Pricing model unknown
no public list price found
Westlaw Advantage with CoCounsel Essentials
$192K/yr
year 1 license · $639/seat
What buyers actually pay
median, annual
Vendr deal-flow data. The real benchmark, not list price.
Median annual
$800/yr
Vendr · n=61
No Vendr data
—
Not in Vendr's deal flow
REF · 01
Sources & confidence
Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.
Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources
7 sourced facts
4 hidden-cost · 1 contract · Vendr median · 1 review platform
Last verified
1mo ago
Confidence
High confidence
Sources
No structured sources
Last verified
5d ago
Confidence
Medium confidence
REF · 02
Plans at a glance
Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.
Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 05
What users say
Aggregated, with sample sizes. We use whichever review platform has data.
User reviews
TrustRadius · Trustpilot · G2
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
License cost is computed from publicly listed plans (real math, list price × seats).
Median annual cost is from Vendr's deal flow when available — see source badges.
Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
VS
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 | Custom |
| RelativityOne Flex Commit (1-Year) | Free | $639 /user/month |
| RelativityOne Flex Commit (3-Year) | Free | Custom |
| CoCounsel Legal | — | Custom |
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$639.20/user/month
Solo attorney — Westlaw Advantage with CoCounsel Essentials
on a 1-year term, or $519.35/user/month on a 3-year term (18% savings) — about $7,670/year (1-yr) or $6,232/year (3-yr) per attorney. Source: Thomson Reuters configurator, June 2026.
Roughly $2,597–$3,196/month ($31,161–$38,352/year) for 5 seats at $519.35–$639.20 each. Confirm exact firm pricing via Thomson Reuters' configurator.
Small firm (5 attorneys) — Westlaw Advantage with CoCounsel Essentials
Custom quote — not publicly listed. Pricing depends on plan, headcount, jurisdictions, and existing Thomson Reuters contracts.
Larger firm (11+ attorneys) — sales quote