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Legal Research$100+ per user/month⭐ 4.6 (289 reviews)

CoCounsel by Casetext Review 2026

AI legal assistant that passes the bar exam

CoCounsel is the only AI legal assistant built on GPT-4 with legal-specific training and built-in verification that shows sources for every answer.

4.6 out of 5 (289 reviews)
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About CoCounsel by Casetext - Legal Research

CoCounsel by Casetext was the first AI legal assistant built on OpenAI's GPT-4, specifically trained and fine-tuned for legal tasks. It can perform complex legal research, review documents for responsiveness and privilege, analyze contracts for specific provisions, and assist with deposition preparation.

The platform verifies its work by showing citations and sources, reducing the risk of hallucinations. CoCounsel has been rigorously tested against the bar exam and real legal tasks, demonstrating accuracy that meets professional standards.

About Casetext

Casetext is a legal technology company that develops AI-powered tools for legal research and document analysis, acquired by Thomson Reuters in 2023.

Founded: 2013HQ: San Francisco, California, USA

What Makes CoCounsel by Casetext Different?

  • Built on GPT-4 with legal fine-tuning
  • Passing score on bar exam simulations
  • Built-in source verification
  • Rapid document review capabilities
  • Affordable pricing for smaller firms

Why Choose CoCounsel by Casetext?

🎯

Verified Results

Every answer includes citations and sources you can verify

⚡

Fast

Complete research and review tasks in minutes instead of hours

🛡️

Accessible

Pricing designed for firms of all sizes, not just enterprises

Who is CoCounsel by Casetext Best For?

Solo practitioners
Small to mid-sized firms
In-house counsel
Litigation attorneys
Transactional lawyers

CoCounsel by Casetext Key Features

  • Legal research
  • Document review
  • Contract analysis
  • Deposition preparation
  • Source verification
  • Citation checking
  • Bulk document upload
  • Secure cloud platform

Use Cases for CoCounsel by Casetext

Legal Research

Ask complex legal questions in plain English and receive well-researched answers with supporting case law and statutes.

Document Review

Upload thousands of documents and quickly identify responsive materials, privileged communications, and key evidence.

Implementation Timeline

⏱️ Same day

Sign up and start using CoCounsel immediately through the web interface. Most attorneys are productive within their first session.

CoCounsel by Casetext Pros & Cons

Pros

  • ✓ Highly accurate research
  • ✓ Fast document review
  • ✓ Clear citations
  • ✓ Easy to use interface

Cons

  • ✗ Requires fact-checking
  • ✗ Limited customization
  • ✗ Internet connection required

Pricing Details

💰$100+ per user/month

CoCounsel offers subscription plans starting at approximately $100-150 per user per month, with volume discounts for larger firms.

Frequently Asked Questions about CoCounsel by Casetext

Does CoCounsel hallucinate legal information?

CoCounsel includes built-in verification that shows sources for every answer. Attorneys should still verify critical information, but the source links make fact-checking efficient.

What happened to Casetext after the Thomson Reuters acquisition?

Thomson Reuters acquired Casetext in 2023. CoCounsel continues to be developed and integrated into Thomson Reuters' broader legal technology portfolio.

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