2 Best AI Legal Agents in 2026
These are the 2 leading AI Legal Agent platforms in 2026. Compared head-to-head on pricing, features, integrations, and deployment options.
TL;DR
Top 2 picks: Harvey, Casetext (CoCounsel). Compare on pricing model, integrations with your existing stack, and deployment options (SaaS vs VPC vs on-prem).
Filter by constraint:
Comparison table
| Vendor | Pricing model | Starting price | Free | Best for |
|---|---|---|---|---|
| Harvey | custom | Custom | — | Am Law 200 firms |
| Casetext (CoCounsel) | per seat | Custom | — | Mid-size law firms |
Vendors in depth
1. Harvey
AI for large law firms (Allen & Overy, PwC partner)
Harvey builds vertical AI for elite law firms — drafting, due diligence, M&A, and litigation prep. Partnerships with Allen & Overy, PwC.
- Pricing
- Enterprise-only; partner-grade contracts
- Best for
- Am Law 200 firms
- Strengths
- Highest-tier law firm focus
- Trade-offs
- Not for solo / small firms
2. Casetext (CoCounsel)
Thomson Reuters-owned AI legal assistant
Casetext's CoCounsel handles legal research, document review, and deposition prep. Acquired by Thomson Reuters in 2023.
- Pricing
- Per-attorney monthly; via Thomson Reuters
- Best for
- Mid-size law firms
- Strengths
- Backed by Westlaw research data
- Trade-offs
- Less customization than Harvey
FAQ
What are the best AI Legal Agent platforms in 2026?
Top picks: Harvey, Casetext (CoCounsel). Each takes a different approach — pick based on your top constraint (pricing model, integration depth, deployment, or compliance need).
How were these ranked?
Curated by category coverage, not by funding or press attention. Each vendor scored against integration depth, pricing transparency, security/compliance posture, and deployment options. We prefer vendors with clearly documented pricing over those that gate everything behind 'Contact sales'.
How often is this list updated?
Quarterly. The underlying vendor database is hand-curated and changes when vendors launch, change pricing, or release major capabilities. Most recent refresh: 2026-05-25.