CoCounsel
The industry-leading AI for legal professionals — research, analysis, and drafting in one platform
Enterprise·All audiences·Powered by Thomson Reuters·API available
Key strengths
Legal research grounded in Westlaw contentAI-powered drafting and analysisIntegration with Practical Law attorney-editor contentTrusted by Thomson Reuters with 175 years of knowledge
Enterprise pricing
San Francisco, USA
Founded 2013
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CoCounsel – Technical Overview
CoCounsel is an AI platform built for professional workflows in legal, tax & accounting, risk & fraud, and government sectors. It integrates directly with Thomson Reuters' core product ecosystem — including Westlaw, Practical Law, HighQ, Legal Tracker, and ONESOURCE — enabling AI-powered capabilities to operate within existing toolchains rather than as a standalone silo.
Key architectural strengths include:
- Westlaw-grounded legal research: AI outputs are anchored to Westlaw's authoritative legal content, reducing hallucination risk inherent in general-purpose LLMs.
- Practical Law content integration: Attorney-editor-maintained Practical Law content is surfaced through AI-assisted drafting and analysis workflows.
- Cross-platform integration: Native connectivity with HighQ (collaboration), Legal Tracker (matter/spend management), and ONESOURCE (tax) allows CoCounsel to embed into multi-product enterprise deployments.
- Domain-specific trust layer: Backed by Thomson Reuters' 175-year knowledge foundation, the platform is positioned as an enterprise-grade, auditable AI — not a general consumer tool.
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