How much does Casetext CoCounsel cost?

Casetext CoCounsel is a paid tool starting from $225/month.

Does Casetext CoCounsel have an API?

Yes, Casetext CoCounsel offers a public API for developers to integrate its capabilities into custom applications and workflows.

Launching soon — get early access:

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AI Tools

Q: What can Casetext CoCounsel do?

Casetext CoCounsel can: Accelerated legal research, AI-powered contract drafting, Automated tax calculations, Compliance review assistance. Best for: Accelerating legal research for law firms.

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Casetext CoCounsel

Enterprise-ready

Trusted by professionals

Secure data handling

AI-powered legal research

Integrates with existing workflows

Transform professional work with industry-leading AI for legal, tax, and audit.

Last updated: May 14, 2026

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Quick Answer

CoCounsel by Thomson Reuters is an AI assistant for legal, tax, and audit professionals that accelerates research, drafting, and document analysis. It integrates with platforms like Westlaw and Microsoft 365, offering secure and trustworthy AI grounded in authoritative content. Best for large law firms, tax, audit, and accounting firms. Pricing is enterprise-based, requiring contact with sales.

About Casetext CoCounsel

CoCounsel by Thomson Reuters is an AI assistant for legal, tax, and audit professionals that accelerates research, drafting, and document analysis. Built on trusted content and advanced AI, it enhances efficiency and reduces risk for organizations. Designed for enterprise use, it integrates with industry-leading platforms.

What Makes It Unique

CoCounsel offers a fluid connection to existing Thomson Reuters solutions like Westlaw and Checkpoint, understanding context and nuance across products and workflows, and is backed by authoritative content and over 1,000 AI/ML experts.

AI-extracted from public sources. May contain errors. Methodology ·

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Use Cases & Target Users

Use Cases

Compliance

Data Analysis

Best For

Accelerating legal research for law firms

Automating tax calculations for accounting firms

Enhancing compliance reviews for corporations

Drafting legal documents efficiently

Analyzing large volumes of legal and financial data

Company Size

MEDIUM

ENTERPRISE

Fit Score

Complexity

Advanced

Target Team Size

LARGE_TEAM

Target Skill Level

EXPERT

Key Features

Accelerated legal research

AI-powered contract drafting

Automated tax calculations

Compliance review assistance

Document analysis and summarization

Integration with Westlaw and Practical Law

Technical Specifications

API Available

SDK Available

MCP Compatible

Open Source

Team Features

SSO/Enterprise

Webhook Support

Has Demo

Function Calling

Browser Extension

Sandbox Mode

Audit Logs

Free Plan

No Signup

Works Offline

Requires Host App

Framework

MCP Server

IDE Plugin

Inference API

SCIM Provisioning

Developer Access

API

ENTERPRISE

Deployment:

CLOUD

Uses models:1

Pros

+Trusted by over 1 million users for professional-grade AI
+Grounded in authoritative content to limit inaccuracies and bias
+Ensures data privacy with zero-retention API calls and encryption
+Integrates seamlessly with existing Thomson Reuters platforms and Microsoft 365
+Developed by over 1,000 AI and machine-learning experts
+Offers customizable data retention policies at the organizational level

Limitations

-Not a replacement for outside counsel in high-stakes situations
-Pricing information not publicly available, requiring direct contact with sales
-Primarily designed for large professional organizations, not individual users
-Requires integration with existing Thomson Reuters products for full benefit

Powered By

Base Models

GPT-4

Uses Models

GPT-4