CoCounsel is built on an agentic AI architecture that integrates deeply with Thomson Reuters' proprietary legal content databases, including Westlaw (150+ years of case law, statutes, and regulations) and Practical Law (650+ attorney-editor-curated guides and templates). The platform exposes developer-facing APIs and connects into existing legal workflows via integrations. Its AI models are fine-tuned for legal reasoning, delivering citation-backed outputs suitable for professional reliance. CoCounsel supports multi-step agentic tasks such as due diligence review, contract drafting, and research summarization, with verifiable sourcing at every step.