Harvey AI vs CoCounsel by Thomson Reuters
AI Legal Tools pricing comparison · 2026 · Updated October 2026
Harvey AI is quote-based, while CoCounsel by Thomson Reuters costs $637–$784/user/mo. 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.
Sources & confidence
Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.
Plans at a glance
Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.
Contract terms
The fine print, surfaced. Green = buyer-friendly. Each clause backed by a quoted source.
What users say
Aggregated, with sample sizes. We use whichever review platform has data.
Harvey AI and CoCounsel take different approaches to legal AI pricing. Harvey AI offers a single Enterprise tier with custom pricing for large law firms and legal departments needing enterprise-grade AI for research, drafting, and document review with custom models.
CoCounsel by Thomson Reuters offers more tier variety: CoCounsel Essentials at $360/user/month, Practical Law Dynamic Tool Set with CoCounsel Essentials at $596/user/month, and CoCounsel Legal at $784/user/month (All States & Federal), on 1-year terms with online pricing for firms of up to 10 attorneys.
Plan-by-Plan Pricing
| Plan | Harvey AI | CoCounsel by Thomson Reuters |
|---|---|---|
| Harvey AI | Custom | $637 /user/month |
| CoCounsel Legal, All States and Federal (2 years) | — | $686 /user/month |
| CoCounsel Legal, All States and Federal | — | $784 /user/month |
Contract Terms
| Term | Harvey AI | CoCounsel by Thomson Reuters |
|---|---|---|
| Auto-renewal | Yes | Yes |
| Cancellation | Either party may terminate if the other fails to cure a material breach within 30 days. | Must cancel before the annual renewal date; cancellations submitted after the renewal date are rejected |
| Minimum commitment | Harvey AI typically requires a minimum of 20 to 50 lawyer seats, with multi-year commitments (2 to 3 years) being common. | 1 year (2- and 3-year terms available at a discount) |
| Price escalation | 10% to 25% annually | No published schedule; users report billing for unrequested products and difficulty removing subscriptions at renewal |
| Can downgrade | — | No |
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CoCounsel by Thomson Reuters
Our Verdict
Choose Harvey AI if you need the Enterprise tier for a large law firm or legal department that wants custom models and enterprise-grade AI across research, drafting, and document review. Pricing is custom, so the fit depends on your quoted contract.
Choose CoCounsel if you want a Thomson Reuters AI option matched to your practice type: CoCounsel Essentials ($360/user/month) for solo and small firms, Practical Law Dynamic Tool Set with CoCounsel Essentials ($596/user/month) for transactional and advisory practices, or CoCounsel Legal ($784/user/month, including Westlaw Advantage) for litigators and firms wanting the full stack.
Frequently Asked Questions
01 Does Harvey AI offer better legal research than CoCounsel?
It depends on the use case. Harvey AI excels at research involving proprietary firm documents, custom-trained AI models, and complex multi-jurisdictional analysis. CoCounsel excels at research integrated with Thomson Reuters' Westlaw database, offering access to federal and state case law, KeyCite, and reference attorney support. For standard legal research with primary law databases, CoCounsel with Westlaw is likely superior. For research requiring custom AI trained on a firm's own work product, Harvey is the better choice.
02 Does Harvey AI integrate with Westlaw or other legal research platforms?
Harvey AI integrates with select legal platforms but is primarily a standalone AI assistant. CoCounsel has a deeper integration with Thomson Reuters' ecosystem, including CoCounsel Legal, which bundles Westlaw Advantage research, the Practical Law Dynamic Tool Set and CoCounsel Essentials at $784/user/month (1 attorney, All States & Federal, 1-year term).