CoCounsel (Thomson Reuters) is a horizontal legal-AI assistant — research, document review, drafting. MedLegal AI is a plaintiff-specialized evidence suite. Different jobs, different shoppers.
| Dimension | CoCounsel | MedLegal AI |
|---|---|---|
| Primary purpose | Horizontal legal AI (research, drafting, review) | Plaintiff evidence analysis (charts, depos, experts) |
| Pricing | ~$400–$600 / attorney / month, usually + Westlaw | $49–$499 / firm / month flat |
| Legal research | Westlaw-integrated, deep | Not offered — keep Westlaw if you need it |
| Medical chart analysis depth | Generic document review | Braden ↔ MDS cross-checks, F-Tag 686/689 flagging, medication anomaly detection |
| Live deposition analysis | Not offered | Courtroom AI — real-time impeachment flagging during the depo |
| Expert-opinion drafting | Generic drafting | Expert Opinion Draft tuned to 7 plaintiff practice areas |
| Opposing filing response | Generic drafting | Opposing Filing Generator with plaintiff-specific patterns |
| Practice-area specialization | Horizontal | 7 plaintiff areas: NH, med-mal, PI, birth injury, wrongful death, product liability, workers' comp |
| Firm size fit | AmLaw-50 through 200 (enterprise procurement) | 3–50 attorney plaintiff firms |
| Trial / onboarding | Enterprise procurement, ~60 days | 14-day trial, no card, analyze a chart in 20 min |
| Data source | Westlaw + Practical Law corpus | Your uploaded records (HIPAA BAA-compliant) |
Many firms that can afford CoCounsel also run MedLegal AI. The two don't overlap. CoCounsel handles research and horizontal drafting; MedLegal AI handles the specialized plaintiff-evidence work. We don't try to compete on legal research — we're built for the parts of a case CoCounsel isn't.
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CoCounsel starts at $225/mo per user as part of the Westlaw + CoCounsel bundle from Thomson Reuters (annual contracts only). MedLegal AI starts at $49/mo with no contract. For a solo plaintiff attorney, MedLegal AI is roughly 4.5x cheaper at the entry tier. CoCounsel includes Westlaw research access; MedLegal AI uses CourtListener (free public-domain federal case law) and PubMed for medical literature instead — adequate for plaintiff med-mal but not a full Westlaw substitute.
Different strengths. CoCounsel is broader (legal research, contract review, litigation support across all practice areas) and has Westlaw integration that MedLegal AI doesn't. MedLegal AI is deeper on med-mal specifically — Daubert analysis tied to PubMed citations, expert-witness research, live deposition transcription via Courtroom AI, settlement evaluation tuned to med-mal damages. For a 50-attorney general-practice firm, CoCounsel is the right fit. For a sub-5-attorney plaintiff med-mal firm, MedLegal AI's specialty depth wins.
Thomson Reuters acquired Casetext for $650M in 2023 and rebranded its consumer-facing AI as CoCounsel in 2024. The standalone Casetext product was retired in April 2025 — existing accounts were migrated to Westlaw + CoCounsel bundles starting at $225/mo (4x the old Casetext pricing). For plaintiff attorneys priced out by the bundle, MedLegal AI became a popular alternative at $49/mo for the analytical layer.
Yes — and many large plaintiff firms do. CoCounsel handles general legal research and Westlaw-backed citation; MedLegal AI handles the med-mal specialty work (Daubert, PubMed lit review, expert research). Combined cost is around $274/mo vs. $349/mo for Supio's entry tier alone. For multi-practice firms, this stack often makes more sense than either tool alone.
Yes — 14 days, full access to all 23 tools, no credit card required. CoCounsel typically requires a sales call and demo before access; MedLegal AI is self-serve from medicalai.law/register. The /free-daubert lead magnet also lets attorneys run a single Daubert analysis without an account at all.