CoCounsel by Thomson Reuters
Your AI legal research assistant, powered by Thomson Reuters.
Best For
Law firms of all sizes that want AI-powered legal research without leaving the Thomson Reuters ecosystem.
Overview
CoCounsel started as Casetext, one of the first legal research platforms to integrate GPT-4. After being acquired by Thomson Reuters, it now has access to one of the largest legal databases in the world. CoCounsel lets you ask legal questions in plain English, upload documents for analysis, and get AI-generated research memos with real citations. It is rapidly becoming the AI layer on top of Westlaw.
Key Features
Use Cases
- •Legal research — ask questions, get answers with citations
- •Uploaded document analysis and summarization
- •Deposition preparation and witness research
- •Contract review and key term extraction
Pros & Cons
Pros
- +Conversational interface — ask follow-up questions naturally
- +Backed by Thomson Reuters' comprehensive legal database
- +Excellent document summarization for long filings
- +Active development — new features shipping regularly
Cons
- –Post-acquisition integration is ongoing — some features still evolving
- –Higher price point than standalone Casetext was
- –Best results require well-formed prompts
In-Depth Review
The three heavyweights of AI-assisted legal research go head to head. We break down search quality, AI summarization, and real-world usability.
Read full review: AI Legal Research Showdown: Westlaw Edge vs. CoCounsel vs. Casetext →Pricing
Available to Westlaw subscribers.
Contact Thomson Reuters for pricing.