Casetext — AI-powered legal research and drafting platform for law firms and corporate legal teams. Best for Law firms needing verifiable AI legal research and drafting, Corporate legal teams streamlining litigation and compliance, Government legal departments seeking efficient case management. Free to use.
Law firms needing verifiable AI legal research and draftingCorporate legal teams streamlining litigation and complianceGovernment legal departments seeking efficient case managementLegal professionals requiring integration with Westlaw and Practical LawTax, audit, and accounting firms using CoCounsel Tax for research
Not ideal for
Solos or small firms on a tight budget (pricing not transparent)Users seeking a standalone AI tool without vendor ecosystem lock-inLegal teams needing broad integration with non-Thomson Reuters toolsPractice areas not covered by Westlaw or Practical Law content (e.g., niche local regulations)Organizations requiring on-premises deployment or strict data sovereignty
A top-tier AI legal assistant that delivers trustworthy, citation-backed results. Ideal for firms already in the Thomson Reuters ecosystem, but pricing is not transparent, and smaller firms may find it expensive.
Pick CoCounsel if your firm relies on Thomson Reuters resources and you need AI that provides verifiable legal citations. It's a solid choice for streamlining legal research and drafting, especially for civil litigation and corporate work. However, pass if you need a budget-friendly option or want to avoid vendor lock-in, as it's deeply integrated with Westlaw and Practical Law. Compared to alternatives like Casetext's legacy product or other AI legal tools, CoCounsel offers unparalleled content integration but may lack flexibility for niche practice areas. Real-world usage reveals a learning curve for non-Thomson Reuters users, and the pricing remains opaque, requiring a sales call. Overall, it's a powerful but premium tool best suited for firms prioritizing accuracy and efficiency over cost.
Skip Casetext if Skip CoCounsel if you need free or low-cost legal research, or if you are a solo practitioner with a budget under $100/mo.
Latest from Casetext
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Viability Score
80/100
Safe Bet
How likely is Casetext to still be operational in 12 months? Based on 6 signals including funding, development activity, and platform risk.
funding runway
80
website health
90
github activity
50
category mortality
70
wrapper dependency
100
hyperscaler overlap
80
About Casetext
Casetext, now part of Thomson Reuters as CoCounsel Legal, is a professional-grade AI platform for legal professionals. It integrates research, analysis, and drafting using AI grounded in trusted Westlaw and Practical Law content. CoCounsel helps law firms and corporate legal teams complete legal work faster by providing verifiable, citation-backed insights. Key features include AI-assisted legal research, automated document drafting, and workflow integration with Westlaw and Practical Law. The platform is designed for law firms of all sizes, corporations, and government legal departments, offering tools for litigation, compliance, and matter management. Compared to standalone AI tools, CoCounsel stands out for its integration with authoritative legal content and professional-grade reliability.
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Key Features
AI-assisted legal research with Westlaw content
Automated document drafting with Practical Law
Verifiable, citation-backed AI insights
Integration with Westlaw Edge and Practical Law
Workflow automation for litigation tasks
Matter management with HighQ integration
Secure collaboration for legal teams
AI-powered legal analysis and review
Customizable research and drafting workflows
Agentic AI for strategic research guidance
Extraction of key facts from legal documents
Real-world workflow fit
Concrete scenarios for the personas Casetext actually fits — and what changes day-one when you adopt it.
Litigation associate at a mid-size law firm
You need to find all cases related to a specific contract clause for a motion.
Outcome: In minutes, CoCounsel searches Westlaw, retrieves relevant cases, and provides citation-backed answers, reducing research time from hours to minutes.
Corporate in-house counsel reviewing a merger agreement
You have a 50-page contract to review for risk clauses.
Outcome: CoCounsel analyzes the contract, highlights risky provisions, and suggests edits based on Practical Law templates, cutting review time by 80%.
Government attorney preparing for deposition
You need to summarize deposition transcripts and identify inconsistencies.
Outcome: CoCounsel processes transcripts, generates summaries, and flags contradictions, enabling faster preparation and stronger trial strategy.
In-house counsel conducting due diligence for mergers and acquisitions
Models Under the Hood
GPT-4 (underlying LLM for CoCounsel)Proprietary legal AI models
Limitations
CoCounsel requires a subscription to Thomson Reuters services, which may be cost-prohibitive for small firms. The AI's outputs are only as reliable as the underlying Westlaw content, and it may not cover niche practice areas thoroughly. Integration is tightest with Thomson Reuters ecosystem, limiting flexibility for firms using other tools.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Annual total
Free
Over 12 months
Effective monthly
—
—
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Integrations
WestlawPractical LawHighQLegal TrackerCLEARONESOURCESafeSendGuided AssuranceReady to AdviseReady to ReviewWestlaw EdgeWestlaw Advantage
Hidden costs & gotchas
What the public pricing page doesn't put in bold. Captured from pricing-page footnotes, contract terms, and recurring complaints.
•Thomson Reuters subscription required for Westlaw and Practical Law access
•Enterprise pricing typically beyond reach for solo practitioners and small firms
•Potential overage charges for high-volume usage not disclosed publicly
Where the pricing makes sense
The company stage and team size where Casetext's pricing actually pencils out — and where peers do it cheaper.
CoCounsel is enterprise-priced, suited for mid-to-large law firms and corporate legal departments that already invest in Thomson Reuters. For smaller firms or budget-conscious teams, lower-cost alternatives like ChatGPT Plus with legal prompts or specialized contract tools (e.g., Lexion) may be more affordable.
Setup time & first value
How long it actually takes to get something useful out of Casetext — broken out by persona, not the marketing-page minute.
For law firms already using Westlaw and Thomson Reuters, CoCounsel can be provisioned and active within hours. New customers may need a few days to integrate with existing systems and configure access controls. Thomson Reuters onboarding typically takes 1-2 weeks for full deployment across a large organization.
Switching to or from Casetext
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
Migrating in
→From legacy legal research tools (e.g., LexisNexis): CoCounsel offers guided data migration and support from Thomson Reuters.
→From manual document review: CoCounsel's AI automates contract analysis, reducing reliance on paralegal hours.
Migrating out
↗To a lower-cost AI legal tool (e.g., ChatGPT Plus + legal prompts): Export your documents and notes manually; CoCounsel data can be downloaded.
↗To LexisNexis: Similar migration path via export and manual transfer.
Recent material changes
Pricing, brand, ownership, or deprecation changes worth knowing before you commit. Most-recent first.
•2025: Casetext rebranded as CoCounsel under Thomson Reuters, unifying with Westlaw and Practical Law.
•2025: Introduced agentic AI features in Westlaw Advantage for strategy generation.
•2024: Launched CoCounsel Audit and CoCounsel Tax for expanded professional use.