Logos AI vs CoCounsel
How does Logos AI compare to Thomson Reuters' CoCounsel for legal AI?
Logos AI
HIPAA-compliant legal AI platform for attorneys. AI-powered case management, legal research, document analysis, and document drafting. Starting at $179.99/month with no long-term contracts.
CoCounsel
AI-powered legal assistant by Thomson Reuters (formerly Casetext). Integrates with the Westlaw ecosystem for document review, summarization, drafting, deposition preparation, and legal research grounded in Thomson Reuters content.
CoCounsel (formerly Casetext) is Thomson Reuters' AI-powered assistant deeply integrated into the Westlaw legal research ecosystem. It offers strong AI research capabilities grounded in proprietary Thomson Reuters content. Logos AI provides a standalone, HIPAA-compliant platform with integrated case management, document analysis, and document drafting — without requiring an existing Westlaw subscription. A Stanford study found Westlaw AI-Assisted Research had a 34% error rate, highlighting the importance of attorney verification with any AI tool.
Feature-by-Feature Comparison
| Feature | Logos AI | CoCounsel |
|---|---|---|
| AI-Powered Legal Research | ||
| Comprehensive Research Memos (15k+ tokens) | ||
| Document Review & Summarization | ||
| Document Comparison & Redlining | ||
| Document Drafting (Motions, Contracts, Briefs) | ||
| AI Artifact Generation (Timelines, Charts, Tables) | ||
| Case Management | ||
| AI Task Extraction from Documents | ||
| AI Memory System (Learns Case Context) | ||
| OCR & Scanned Document Support | ||
| Multi-Format Export (PDF, DOCX, RTF, ODT, CSV) | ||
| Multiple Summarization Modes | ||
| Deposition Preparation | ||
| HIPAA Compliance | ||
| BAA Available | ||
| Standalone Platform (No Dependencies) | ||
| Transparent Pricing | ||
| Per-Case Cost Tracking | ||
| Citation Validation | ||
| Multiple AI Model Choice | ||
| Proprietary Legal Database | ||
| Microsoft 365 Integration |
Where Logos AI Excels
Where CoCounsel Excels
Pricing Comparison
Logos AI
Professional plan includes all features, 70K credits, 200GB storage, and HIPAA-compliant AI. No additional subscriptions required.
Get StartedCoCounsel
CoCounsel Core starts at $225/user/month. Westlaw Precision with CoCounsel is approximately $428/month. Most features require an existing Westlaw subscription. Volume discounts available.
Frequently Asked Questions
Do I need a Westlaw subscription to use CoCounsel?
CoCounsel is deeply integrated with the Westlaw ecosystem. The standalone Casetext product was shut down in April 2025, and CoCounsel is now only available through Thomson Reuters. Most CoCounsel features work best with — or require — a Westlaw subscription. Logos AI is a fully standalone platform with no dependencies on third-party legal databases.
Is CoCounsel HIPAA-compliant?
CoCounsel's HIPAA compliance status is not publicly documented. Thomson Reuters states that user data is secure and not used for AI training, but does not publicly advertise HIPAA compliance or BAA availability. Logos AI is fully HIPAA-compliant with BAA coverage through AWS Bedrock and Google Vertex AI.
How accurate is CoCounsel's legal research?
A Stanford study found that Westlaw AI-Assisted Research had a 34% error rate. Thomson Reuters itself advises verifying all AI output. As with any legal AI tool, including Logos AI, attorney verification of all AI-generated content is essential.
Can I switch from CoCounsel to Logos AI?
Yes. Logos AI is a standalone platform that does not require migration from any other tool. You can upload your existing documents to Logos AI and begin using AI-powered research, document analysis, and case management immediately.
Ready to try Logos AI?
See why attorneys are choosing Logos AI for HIPAA-compliant legal research, document analysis, and case management.
Last updated: March 2026. All competitor information is based on publicly available data from official websites, public pricing pages, and reputable third-party reviews. Logos AI is not affiliated with CoCounsel. Feature availability and pricing may change — please verify current details on each provider's website.
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