Thomson Reuters' AI legal assistant that performs document review, contract analysis, deposition preparation, and legal research for attorneys — built on Westlaw's authoritative legal databases.
Professional AI legal assistant that performs research, analyzes documents, and helps draft legal work — built on Thomson Reuters' authoritative Westlaw databases.
CoCounsel Legal is Thomson Reuters' AI-powered legal assistant, serving professionals across legal, tax, and compliance sectors. Built on the acquired Casetext technology, CoCounsel combines advanced AI with Thomson Reuters' trusted Westlaw legal content to accelerate legal work from research through drafting and analysis.
Agentic AI in Legal PracticeCoCounsel implements agentic AI that autonomously completes complex legal workflows. Unlike traditional legal research tools requiring manual guidance through each step, CoCounsel's agentic capabilities independently plan, execute, and refine legal tasks with minimal human oversight.
Introduced in late 2025, agentic features include bulk document review, customizable workflow plans, and advanced execution frameworks that adapt to specific practice areas. These enable attorneys to delegate workstreams to AI agents while retaining quality control.
Document-Centric AIThe platform's strength lies in document analysis. Attorneys upload contracts, case files, depositions, and discovery materials, then query them in natural language. CoCounsel reads, analyzes, and cites specific passages — functioning like a paralegal who has read every page.
Comprehensive Legal AI CapabilitiesThe platform spans the full range of legal document work:
Thomson Reuters expanded CoCounsel Legal to the UK in January 2026. The platform serves environments from solo practitioners to large international law firms and corporate legal departments.
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The leading AI legal assistant for document-heavy practices, backed by Thomson Reuters' unmatched legal content. Expensive but delivers real time savings on document review, contract analysis, and deposition prep. Not a replacement for legal judgment — a force multiplier for it.
Upload documents or large document sets and ask natural language questions about them. CoCounsel reads, analyzes, and cites specific passages in its responses — functioning like a paralegal who has read every page.
Use Case:
Uploading a client's 50-page vendor contract and asking CoCounsel to identify all indemnification clauses, termination triggers, and liability caps in seconds.
Given a deponent's name and case issues, CoCounsel generates structured deposition outlines with suggested topics and questions tailored to the specific legal context.
Use Case:
Preparing for a corporate officer deposition in a breach-of-contract case — CoCounsel generates a topic outline covering fiduciary duties, communications timeline, and decision-making authority.
Automated contract analysis identifying key terms, risk areas, non-standard clauses, and compliance issues — with clause-by-clause comparison tools for redlining and negotiation.
Use Case:
Reviewing a 30-page SaaS agreement to flag unusual indemnification language, data processing terms that conflict with GDPR, and payment terms that deviate from your standard playbook.
Seamless access to the world's most comprehensive legal database with AI-enhanced search. Full case law research requires a Westlaw Precision subscription beyond CoCounsel Core.
Use Case:
Running a comprehensive case law search on summary judgment standards in the Northern District of Illinois, with AI-generated research memos citing current, verified authorities.
All AI-generated content includes proper legal citations with links to source materials. CoCounsel verifies that cited cases exist, are correctly cited, and are still good law.
Use Case:
Drafting a motion to dismiss where every cited case has been verified as current authority — eliminating the risk of citing overruled or withdrawn decisions.
Process large document sets simultaneously with intelligent categorization, privilege screening, and relevance scoring for efficient discovery management in litigation.
Use Case:
Screening 10,000 documents produced in discovery for attorney-client privilege and relevance to specific case issues, reducing review time from weeks to days.
$225.00/user/month
user/month
Contact for pricing
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View Pricing Options →Screen thousands of documents for privilege, relevance, and key issues — reducing review time from weeks to days while maintaining accuracy standards required for legal proceedings.
Review vendor agreements, employment contracts, and partnership deals to identify risk areas, non-standard clauses, and compliance issues before signing — cutting contract review cycles significantly.
Generate structured deposition outlines with suggested topics and questions based on case issues, reducing preparation time and ensuring comprehensive coverage of key areas.
Draft comprehensive research memos from natural language queries, with verified citations to current case law — replacing hours of manual Westlaw searching and brief writing.
CoCounsel (by Casetext) works with these platforms and services:
We believe in transparent reviews. Here's what CoCounsel (by Casetext) doesn't handle well:
Yes. CoCounsel checks that cited cases exist, are correctly cited, and are still good law — a critical safety feature that general-purpose AI tools like ChatGPT lack. This is one of its strongest differentiators for practicing attorneys.
Case law research requires a Westlaw Precision subscription. CoCounsel Core alone handles document analysis, contract review, and memo drafting, but does not independently search the Westlaw case law database. You need the full CoCounsel Legal bundle or a separate Westlaw Precision license.
Yes. CoCounsel can analyze large document collections for relevance, privilege, and specific issues. The bulk document review feature (currently in beta, announced November 2025) handles discovery-scale document sets with intelligent categorization.
Litigation and document-heavy practices see the biggest ROI. Contract review, deposition preparation, and document analysis are the strongest capabilities. Corporate transactional attorneys also benefit from contract comparison and risk assessment tools.
CoCounsel integrates with Clio for law practice management. Additional integrations are available through the Westlaw Precision ecosystem. The platform is web-based and works with any modern browser — no desktop installation required.
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UK market expansion launched January 2026. Agentic AI workflow features introduced in late 2025 including bulk document review (beta), customizable workflow plans, and advanced execution frameworks for multi-step legal processes.
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