Legal Research · Review
Initial take, not yet hands-on testedCoCounsel (Thomson Reuters)
Our verdict
The safest AI bet if your firm already pays for Westlaw: CoCounsel Legal reasons from Westlaw and Practical Law content and your own documents, and links its citations so you can check them. If you are not a Thomson Reuters customer, expect a sales conversation before you see a price.
Best for: Firms already on Westlaw that want AI research and drafting tied to that content.
Watch out for: Enterprise-style sales process; pricing is not published on the homepage.
Thomson Reuters' AI assistant for professionals, backed by Thomson Reuters content (formerly Casetext).
Direct link to the vendor’s website. We don’t earn a commission from this link.
Pros & cons
Pros
- Grounded in Westlaw and Practical Law content, per Thomson Reuters
- Linked citations for verification
- Works inside Microsoft Word, Outlook, and Teams
- Lists integrations including Smokeball, Litify, iManage, NetDocuments, and SharePoint
- Free trial offered on the product page
Cons
- Plans and pricing go through a sales rep
- Most valuable if you already pay for Westlaw
- Any AI-drafted brief still needs a human cite-check before filing
- Not yet hands-on tested by us
Who it’s for
- Best for
- Firms already on Westlaw that want AI research and drafting tied to that content.
- Firms already on Westlaw or Practical Law
- Litigators who want AI-assisted research and brief building tied to a citator they know
- Teams that want to review large document sets in a single table (the vendor says up to 10,000 documents against 100 questions)
- Probably not for
- Firms that want published, self-serve pricing
- Lawyers who don't use Westlaw and won't switch
Listed under: Legal Research Drafting & Documents
Pricing
Pricing: see vendor site.
We don’t list prices we haven’t confirmed.
Alternatives: other Legal Research tools
Other tools listed in the same use case, in directory order. Not a ranking.
Legal Research
Lexis+ with Protégé
LexisNexis' AI assistant across its products for research, drafting, and summarizing.
Best forLexis subscribers who want AI inside the research platform they already use.
Legal Research
Vincent AI (vLex / Clio)
vLex's AI for lawyers covering research, litigation analysis, contract review, and judicial profiling across 100+ jurisdictions.
Best forPractitioners needing multi-jurisdiction research; now part of Clio.
Legal Research
Midpage
AI legal research and drafting platform searching US case law, statutes, and regulations.
Best forSolo and small-firm litigators looking for an AI-first research tool.
Sources
Vendor pages we checked, accessed 2026-10-14.
FAQ
Who is CoCounsel (Thomson Reuters) best for?
In our verdict: Firms already on Westlaw that want AI research and drafting tied to that content.
What should I watch out for with CoCounsel (Thomson Reuters)?
In our verdict: Enterprise-style sales process; pricing is not published on the homepage.