Luminance vs Casetext CoCounsel (Thomson Reuters)
AI Legal Tools pricing comparison · 2026
Luminance pricing ranges from $10–$100/user/month, while Casetext CoCounsel (Thomson Reuters) ranges from $225–$900/user/month. Luminance is typically 90% more affordable, though your actual cost depends on tier and team size.
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Luminance and Casetext CoCounsel (Thomson Reuters) both operate in the ai legal tools category. This page compares their list pricing.
Plan-by-Plan Pricing
| Plan | Luminance | Casetext CoCounsel (Thomson Reuters) |
|---|---|---|
| Professional | Free | $225 /user/month |
| Enterprise | Free | $500 /user/month |
| Enterprise Plus (AI Agents) | Free | $900 |
Cost at Scale
Total cost of ownership — licenses, implementation, and hidden costs included.
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.
Casetext CoCounsel (Thomson Reuters)
3 scenarios$2,700/year ($225/month)
Solo Attorney — Annual Subscription
$6,000/year ($500/month)
Small Firm — Annual Subscription + Supplemental Research
for CoCounsel + estimated $900–$1,500/year per attorney for supplemental research
Custom pricing; comparable enterprise Westlaw seats reported at ~$900/month per seat
Enterprise — Custom-Quoted