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CoCounsel

CoCounsel is an AI legal assistant from Thomson Reuters designed for legal research, document review, contract analys...

Updated Jun 2026· 80/100
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About CoCounsel

CoCounsel is an AI legal assistant from Thomson Reuters designed for legal research, document review, contract analysis, and drafting tasks. Built on generative AI trained by legal experts and backed by authoritative legal content, it's available in multi-year subscription plans starting at $225/month for CoCounsel Core.

CoCounsel is Thomson Reuters' AI-powered legal assistant that helps lawyers with research, document review, contract analysis, and drafting workflows. The platform uses generative AI trained by industry experts and integrates authoritative legal content to support tasks like legal research planning, document discovery review, contract modification, and brief proofreading. CoCounsel includes Deep Research workflows using agentic AI, and follows users throughout their workflow within the Thomson Reuters ecosystem. The tool is designed for law firms and legal professionals who need AI assistance while maintaining confidentiality and security standards required for legal work.

Pros & cons

Pros

  • Trained by legal experts and backed by authoritative Thomson Reuters legal content, reducing hallucination risks common in generic AI tools
  • Integrates directly into Thomson Reuters workflow, following users throughout their legal research and drafting tasks
  • Useful for document-based legal practice including medical record review, contract proofreading, and demand letter drafting according to user reviews
  • Subject to best-in-class security standards appropriate for confidential legal work

Cons

  • Struggles with very large documents according to user reviews, with performance degrading on oversized contract reviews
  • Customer service quality reported as 'NOT good' by users despite the premium pricing
  • Can return irrelevant cases during legal research, requiring careful verification of results
  • Some early adopters have switched to competitors as the market has evolved

Pricing plans

CoCounsel Core
$225 / month
  • AI-assisted legal research
  • Document review capabilities
  • Contract analysis tools
  • 1-year, 2-year, or 3-year term options
CoCounsel Legal
Custom / month
  • Full legal AI assistant features
  • Deep Research workflows with agentic AI
  • Document discovery review
  • Custom pricing based on firm size and needs

Key features

Compare key features

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Feature
CoCounsel
Paxton AI
Lexis+ AI
Pricing
Paid
Freemium
Freemium
Free plan
No
Yes
Yes
Free trial
No
Yes
No
API
Self-hosted
No
No
No
Team support
Yes
Yes

Frequently asked questions

Is CoCounsel free?+

No, CoCounsel does not offer a free plan or free trial. It's available through 1-year, 2-year, and 3-year subscription plans, with CoCounsel Core starting at $225/month. Multi-year plans offer discounted pricing compared to annual subscriptions.

What does CoCounsel integrate with?+

CoCounsel integrates within the Thomson Reuters legal ecosystem and follows users throughout their workflow. It works with Microsoft Word for drafting and redlining tasks. Specific third-party integrations beyond the Thomson Reuters product suite were not detailed in available research.

How does CoCounsel compare to alternatives?+

CoCounsel is distinguished by its Thomson Reuters legal content backing and security standards, making it a preferred choice for firms with strict confidentiality requirements. Alternatives like Harvey, Spellbook, and Clio Manage offer different approaches—some with multi-model systems or different pricing structures. Users report CoCounsel performs better than generic ChatGPT for legal work but note it can return irrelevant cases and struggles with very large documents.

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