CoCounsel vs Legora: pricing, features and which to choose

CoCounsel is a professional legal AI assistant made by Thomson Reuters and descended from Casetext's product of the same name. Casetext launched CoCounsel in March 2023, and Thomson Reuters announced a $650 million acquisition of Casetext that year. The product now sits across Thomson Reuters' legal portfolio rather than operating as an independent Casetext service. Thomson Reuters said in February 2026 that one million professionals across 107 countries and territories had chosen CoCounsel across legal, tax, audit, compliance, and related products. Legal users are the clearest audience, including litigators, transactional lawyers, in-house teams, and firms that already buy Westlaw or Practical Law. The acquisition brought Casetext's product expertise into Thomson Reuters, while the current offering adds licensed content and broader distribution.

A typical workflow starts with a natural-language request, an uploaded file, a connected document repository, or a Thomson Reuters research collection. Users can summarize and compare documents, extract information, identify missing provisions, prepare deposition materials, build timelines, draft text, and check contract policies. Knowledge Search can find material in a firm's own repositories, while Browse Library exposes expert-built prompts and skills. Agentic workflows handle multi-step assignments, and Deep Research gathers and synthesizes authority for a more complete answer. Outputs are designed to include citations or links where selected content supports them, but lawyers still need to check quotations, authorities, privilege, confidentiality, and final work product before relying on it. The system assists legal judgment rather than replacing professional review.

CoCounsel's strongest case is a research-heavy practice already invested in Thomson Reuters content. Its citations, document skills, repository connections, Microsoft 365 integrations, and agentic workflows can reduce switching between research and drafting tools, though outputs remain subject to legal review. Law firms should compare it with Harvey, Lexis+ AI, and Legora rather than assume the content advantage settles the decision. Independent 2025 benchmarking placed CoCounsel among the stronger tools across document tasks, while Law360 reported that some early adopters preferred Harvey or Legora for interface and workflow reasons. Privacy terms prohibit using customer prompts and content to train third-party models, with configurable retention, encryption, and zero-retention model APIs. Choose CoCounsel when Westlaw or Practical Law is central and authoritative citations matter most.

Legora is the legal AI company formerly called Leya, founded in Stockholm in 2023 and launched as a platform in October 2024. Its latest financing is a $550 million Series E announced on October 21, 2026, at an $8.8 billion post-money valuation, replacing the October 2025 Series C as the latest round. The company reports more than 1,000 employees across 18 offices and use by over 140,000 legal professionals at more than 2,400 law firms and in-house teams across over 80 markets. It previously reported smaller 2025 figures, including more than 400 firms and legal teams in over 40 markets. Those figures are company reports, not independent usage audits.

Legora supports research, drafting, document review, and large-scale extraction. Lawyers can work through the browser, desktop app, Word and Outlook add-ins, or connected document systems. Tabular Review places documents in rows and requested facts, clauses, dates, or risks in columns, supporting diligence and portfolio review. Editor supports drafting, while Legal Research returns answers with structured citations. Workflows and Agent handle multi-step research, analysis, and drafting. The aOS connects interfaces, data sources, legal capabilities, context, and governance. Buyers should test citation quality, source coverage, jurisdictional fit, and the amount of lawyer review required on representative matters before expanding access.

Legora’s main weakness is procurement friction: pricing is private, there is no public trial, and consumption billing can complicate forecasting. Harvey is the closest broad competitor, also serving law firms and in-house teams with research, drafting, review, and workflow automation. Spellbook is narrower and centers on Microsoft Word contract work, while Luminance focuses more heavily on contract intelligence, analysis, and negotiation. Thomson Reuters CoCounsel combines legal research and drafting with Thomson Reuters content and professional tools. Legora suits teams handling multilingual, high-volume review and complex matters that can support enterprise procurement. Smaller teams seeking transparent monthly pricing should compare self-serve products first. Security certifications and data-use claims still require contractual review.