Harvey vs CoCounsel (Casetext)
Harvey and CoCounsel (Casetext) are the two best-known legal AI assistants, but they are priced and sold for different buyers. Harvey is an enterprise legal AI platform used by large firms and in-house departments, covering research, document analysis, drafting, and multi-step workflow agents; it publishes no pricing, with industry reporting putting it around $1,000-$2,000/seat/month for mid-market firms and roughly $100-$200/seat/month at Am Law 100 scale, typically with 25-50 seat minimums (Oct 2026). CoCounsel, from Thomson Reuters (formerly Casetext), is the AI assistant grounded in Westlaw's case-law corpus, covering research memos, document review, deposition prep, and contract analysis; published pricing starts around $340.85/month for CoCounsel Essentials, with solo bundles reported at roughly $104-$639/user/month depending on the Westlaw plan. If you are a large firm needing an enterprise legal AI platform across matters, Harvey fits; if your practice lives on Westlaw and you want citation-grounded AI research with public pricing, CoCounsel fits. We did not hands-on test either product, so no quality winner is declared. AI output is not legal advice: all work product needs review by a licensed attorney.
| Decision point | Harvey | Casetext |
|---|---|---|
| Best suited to | Large law firms and in-house legal departments that want an enterprise legal AI platform across research, document analysis, and drafting. | Litigation and transactional attorneys at firms already paying for Westlaw, who want research, drafting, and document review in one assistant grounded in Thomson Reuters' case law libraries rather tha |
| Plans and cost | No published pricing. Industry reports: ~$1,000-$2,000/seat/month mid-market, ~$100-$200/seat/month at Am Law 100 scale, typically 25-50 seat minimums; observed October 2026. | No public pricing; sold quote-based through Thomson Reuters. Third-party reports cite roughly $225-$639 per user per month depending on Westlaw bundling and firm size, annual contracts. Prices as of Oct 2026. |
| Limitations | No public pricing and reported seat minimums mean small firms are effectively locked out. Harvey's agents are powerful but operate inside your firm's data: security review is mandatory before onboardi | No public price list; every firm goes through a Thomson Reuters sales quote, usually bundled with Westlaw, and contracts typically run one year with auto-renewal. AI output still requires attorney ver |
Use the same input
Research a contract-law question across case law, get a memo draft with citations, and review a 40-page vendor agreement for risky clauses.
What a successful result must preserve
The assistant must answer legal questions and review or draft documents accurately enough to save billable hours, without becoming a substitute for licensed legal counsel.
Evidence and test status
Official specification comparison. Plan prices, allowances and feature claims below come from the two vendors' official pricing and feature pages, re-checked October 2026. We did not run a hands-on test on either tool; no quality winner is declared.
- Harvey — Harvey official page ↗
- Casetext — Official website ↗ (reviewed 2026-10-24)