CoCounsel (by Casetext) Review 2026

Name: CoCounsel (by Casetext)
Brand: CoCounsel (by Casetext)

Honest pros, cons, and verdict on this enterprise agents tool

✅ Citations are grounded in Westlaw's authoritative case law, statutes, and secondary sources, reducing the hallucination risk that plagues general-purpose LLMs in legal work

Starting Price

Contact sales

Free Tier

What is CoCounsel (by Casetext)?

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.

CoCounsel is Thomson Reuters' professional-grade generative AI legal assistant, originally built by Casetext (acquired by Thomson Reuters in 2023 for $650 million) and now deeply integrated with the Westlaw legal research ecosystem. It is designed specifically for licensed attorneys, paralegals, and in-house legal teams who need to perform substantive legal work — research, drafting, review, and analysis — at a faster pace without sacrificing the verifiability that the profession requires. Unlike general-purpose chatbots, CoCounsel is trained and tuned on Thomson Reuters' proprietary legal content, including Westlaw case law, statutes, regulations, secondary sources, and Practical Law guidance, with citations grounded in authoritative materials rather than open-web sources.

The assistant operates through a series of structured 'skills' that map to common legal workflows: legal research memos, document review across large evidence sets, contract analysis and policy comparison, deposition preparation, summarization of transcripts and filings, and timeline extraction from case materials. Each skill follows a guided input-output pattern — the attorney provides a natural language query or uploads documents, CoCounsel processes the request against its content sources, and the output includes structured findings with inline citations linked back to Westlaw authorities or the uploaded source material.

Key Features

✓AI-Powered Document Review & Analysis

✓Contract Review with Risk Assessment

✓Grounded Legal Research with Westlaw Citations

✓Citation Verification & Validation

✓Deposition Preparation Assistant

✓CoCounsel Drafting in Microsoft Word

Pricing Breakdown

CoCounsel Legal

Contact sales for pricing

per month

✓Core attorney skills: legal research, document review, contract analysis, summarization, deposition prep
✓Westlaw and Practical Law grounding for licensed customers
✓Matter-level workspaces and document upload
✓SOC 2 Type II security, no training on customer data
✓Typically priced per seat at firm or department scale

CoCounsel Drafting

Add-on (contact sales)

per month

✓AI drafting embedded in Microsoft Word
✓First-draft generation for motions, briefs, contracts, correspondence
✓Use of matter context and firm precedent
✓Add-on or bundled with CoCounsel Legal

CoCounsel Core (Tax, Audit, Risk)

Custom (contact sales)

per month

✓Domain skills for tax, audit, and risk professionals
✓Integration with Thomson Reuters Checkpoint and related content
✓Designed for accounting firms and corporate finance teams

Pros & Cons

✅Pros

•Citations are grounded in Westlaw's authoritative case law, statutes, and secondary sources, reducing the hallucination risk that plagues general-purpose LLMs in legal work
•Purpose-built skills (document review, deposition prep, contract analysis, legal research memos) follow structured workflows attorneys actually run, rather than forcing prompt engineering
•Handles very large document sets — hundreds of thousands of pages — with consistent question application across the entire corpus
•Deep integration with the Thomson Reuters stack (Westlaw, Practical Law, Document Intelligence, HighQ) and Microsoft 365 (Word, Outlook) puts AI inside existing attorney workflows
•Enterprise-grade security posture: SOC 2 Type II, no model training on customer data, role-based access, matter-level segregation, and audit trails suited for regulated practice
•Backed by Thomson Reuters' legal content licensing and editorial infrastructure, giving customers a single accountable vendor rather than stitched-together point tools

❌Cons

•Pricing is quote-only and positioned at firm/department scale — not accessible or transparent for solos and small firms evaluating cost
•Maximum value is realized only by existing Westlaw subscribers; standalone use loses much of the grounded-citation advantage
•Outputs still require attorney review and verification — the tool does not eliminate the professional responsibility to check every cite and conclusion
•Skill-based workflow can feel rigid compared to open-ended assistants when a task does not map cleanly to a predefined skill
•Coverage is strongest for U.S. federal and state law; non-U.S. jurisdictions and highly specialized practice areas may be thinner

Who Should Use CoCounsel (by Casetext)?

✓Litigation Document Review & Discovery: 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.
✓Contract Analysis for In-House Counsel: 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.
✓Deposition Preparation for Trial Attorneys: Generate structured deposition outlines with suggested topics and questions based on case issues, reducing preparation time and ensuring comprehensive coverage of key areas.
✓Legal Research Memo Generation: Draft comprehensive research memos from natural language queries, with verified citations to current case law — replacing hours of manual Westlaw searching and brief writing.

Who Should Skip CoCounsel (by Casetext)?

×You're on a tight budget
×You're concerned about maximum value is realized only by existing westlaw subscribers; standalone use loses much of the grounded-citation advantage
×You're concerned about outputs still require attorney review and verification — the tool does not eliminate the professional responsibility to check every cite and conclusion

Alternatives to Consider

Harvey

Enterprise-grade AI legal assistant built for law firms and corporate legal departments, offering contract analysis, legal research, litigation support, document drafting, and compliance automation with enterprise-grade security.

Starting at ~$1,000/lawyer/month

Learn more →

Elicit

AI research assistant specialized in academic literature review and scientific paper analysis. Automates systematic research workflows.

Starting at Free

Learn more →

Lexis+ AI

AI-powered legal research platform providing comprehensive legal information and research tools for legal professionals.

Starting at Starting around $175–$250/user/month (custom quoted; exact price depends on firm size and contract terms)

Learn more →

Our Verdict

✅

CoCounsel (by Casetext) is a solid choice

CoCounsel (by Casetext) delivers on its promises as a enterprise agents tool. While it has some limitations, the benefits outweigh the drawbacks for most users in its target market.

Try CoCounsel (by Casetext) →Compare Alternatives →

Frequently Asked Questions

What is CoCounsel (by Casetext)?

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.

Is CoCounsel (by Casetext) good?

Yes, CoCounsel (by Casetext) is good for enterprise agents work. Users particularly appreciate citations are grounded in westlaw's authoritative case law, statutes, and secondary sources, reducing the hallucination risk that plagues general-purpose llms in legal work. However, keep in mind pricing is quote-only and positioned at firm/department scale — not accessible or transparent for solos and small firms evaluating cost.

How much does CoCounsel (by Casetext) cost?

CoCounsel (by Casetext) starts at Contact sales. Check their pricing page for the most current rates and features included in each plan.

Who should use CoCounsel (by Casetext)?

CoCounsel (by Casetext) is best for Litigation Document Review & Discovery: 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. and Contract Analysis for In-House Counsel: 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.. It's particularly useful for enterprise agents professionals who need ai-powered document review & analysis.

What are the best CoCounsel (by Casetext) alternatives?

Popular CoCounsel (by Casetext) alternatives include Harvey, Elicit, Lexis+ AI. Each has different strengths, so compare features and pricing to find the best fit.

More about CoCounsel (by Casetext)

Pricing Alternatives Free vs Paid Pros & Cons Worth It?Tutorial

📖 CoCounsel (by Casetext) Overview 💰 CoCounsel (by Casetext) Pricing 🆚 Free vs Paid 🤔 Is it Worth It?

Last verified March 2026

What is CoCounsel (by Casetext)?

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.

Pricing Breakdown

CoCounsel Legal

Contact sales for pricing

per month

✓Core attorney skills: legal research, document review, contract analysis, summarization, deposition prep
✓Westlaw and Practical Law grounding for licensed customers
✓Matter-level workspaces and document upload
✓SOC 2 Type II security, no training on customer data
✓Typically priced per seat at firm or department scale

CoCounsel Drafting

Add-on (contact sales)

per month

✓AI drafting embedded in Microsoft Word
✓First-draft generation for motions, briefs, contracts, correspondence
✓Use of matter context and firm precedent
✓Add-on or bundled with CoCounsel Legal

CoCounsel Core (Tax, Audit, Risk)

Custom (contact sales)

per month

✓Domain skills for tax, audit, and risk professionals
✓Integration with Thomson Reuters Checkpoint and related content
✓Designed for accounting firms and corporate finance teams

Pros & Cons

✅Pros

•Citations are grounded in Westlaw's authoritative case law, statutes, and secondary sources, reducing the hallucination risk that plagues general-purpose LLMs in legal work
•Purpose-built skills (document review, deposition prep, contract analysis, legal research memos) follow structured workflows attorneys actually run, rather than forcing prompt engineering
•Handles very large document sets — hundreds of thousands of pages — with consistent question application across the entire corpus
•Deep integration with the Thomson Reuters stack (Westlaw, Practical Law, Document Intelligence, HighQ) and Microsoft 365 (Word, Outlook) puts AI inside existing attorney workflows
•Enterprise-grade security posture: SOC 2 Type II, no model training on customer data, role-based access, matter-level segregation, and audit trails suited for regulated practice
•Backed by Thomson Reuters' legal content licensing and editorial infrastructure, giving customers a single accountable vendor rather than stitched-together point tools

❌Cons

•Pricing is quote-only and positioned at firm/department scale — not accessible or transparent for solos and small firms evaluating cost
•Maximum value is realized only by existing Westlaw subscribers; standalone use loses much of the grounded-citation advantage
•Outputs still require attorney review and verification — the tool does not eliminate the professional responsibility to check every cite and conclusion
•Skill-based workflow can feel rigid compared to open-ended assistants when a task does not map cleanly to a predefined skill
•Coverage is strongest for U.S. federal and state law; non-U.S. jurisdictions and highly specialized practice areas may be thinner

Who Should Use CoCounsel (by Casetext)?

✓Litigation Document Review & Discovery: 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.
✓Contract Analysis for In-House Counsel: 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.
✓Deposition Preparation for Trial Attorneys: Generate structured deposition outlines with suggested topics and questions based on case issues, reducing preparation time and ensuring comprehensive coverage of key areas.
✓Legal Research Memo Generation: Draft comprehensive research memos from natural language queries, with verified citations to current case law — replacing hours of manual Westlaw searching and brief writing.

Who Should Skip CoCounsel (by Casetext)?

×You're on a tight budget
×You're concerned about maximum value is realized only by existing westlaw subscribers; standalone use loses much of the grounded-citation advantage
×You're concerned about outputs still require attorney review and verification — the tool does not eliminate the professional responsibility to check every cite and conclusion

Alternatives to Consider

Harvey

Starting at ~$1,000/lawyer/month

Learn more →

Elicit

AI research assistant specialized in academic literature review and scientific paper analysis. Automates systematic research workflows.

Starting at Free

Learn more →

Lexis+ AI

AI-powered legal research platform providing comprehensive legal information and research tools for legal professionals.

Starting at Starting around $175–$250/user/month (custom quoted; exact price depends on firm size and contract terms)

Learn more →

Frequently Asked Questions

What is CoCounsel (by Casetext)?

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.

Is CoCounsel (by Casetext) good?

How much does CoCounsel (by Casetext) cost?

CoCounsel (by Casetext) starts at Contact sales. Check their pricing page for the most current rates and features included in each plan.

Who should use CoCounsel (by Casetext)?

What are the best CoCounsel (by Casetext) alternatives?

Popular CoCounsel (by Casetext) alternatives include Harvey, Elicit, Lexis+ AI. Each has different strengths, so compare features and pricing to find the best fit.