Independent comparison
Harvey vs CoCounsel: how the two legal AI platforms compare
Harvey and Thomson Reuters CoCounsel both target governed legal AI, and neither publishes a standard price for most firms.
CoCounsel runs on Westlaw and Practical Law content that many firms already pay for, with a self-serve entry for small firms. Harvey is independent, built around its own document repository, and enterprise-quoted at every size.
Based on research conducted in August 2026 from each company's own materials and named press sources; details may have changed since.
Harvey
Who Harvey is for
Harvey is built for the workflows of large law firms and enterprise legal departments, not for a lawyer buying alone.
Founded in San Francisco in 2022, Harvey is bought through a demo-led enterprise sale and deployed as a governed rollout across hundreds of users.
- Products: Assistant for research and drafting, Vault for bulk document review, Knowledge for citation-backed research, and Workflow Agents, connected to Word, Outlook, SharePoint and Box through its Ecosystem layer
- Strongest where deployments are large and governed: enterprise legal departments and multi-jurisdiction firms
- Scale, funding, customers and certifications: sourced line by line in the side-by-side table below
CoCounsel
Who CoCounsel is for
CoCounsel grew inside Thomson Reuters and runs on research content firms already pay for.
Built on Casetext's technology after Thomson Reuters acquired it for $650 million in 2023, CoCounsel's clearest differentiator: research and drafting run on Westlaw and Practical Law where the firm holds those subscriptions.
- CoCounsel Essentials has a self-serve configurator for firms of roughly ten attorneys or fewer; larger firms and the full CoCounsel Legal stack go through sales
- A next-generation CoCounsel Legal opened early access in June 2026, with general availability planned for August 2026 in the US, then Canada, the UK and Australia
- Tabular Analysis, covered by Artificial Lawyer in January 2026, processes up to 10,000 documents and 100 questions into a filterable table
- User scale and certifications: in the table below, sourced
Pricing
Neither publishes a standard rate for most firms
CoCounsel has a self-serve entry point for very small firms; above that, both run a sales-quoted process.
Harvey's site is demo-gated end to end, with no published price at any firm size. CoCounsel's configurator is a real structural difference for a small firm, even though it does not publish the figures it produces. This page does not repeat per-seat dollar estimates that circulate on third-party sites, since neither company has confirmed them.
For the full treatment of what is and is not known about Harvey's cost, see our Harvey AI pricing guide.
The real differences
Where the two platforms genuinely differ
CoCounsel is built on Thomson Reuters content; Harvey on its own stack.
- Research content: CoCounsel runs on Westlaw and Practical Law, which many firms already pay for; Harvey's Knowledge is citation-backed but without Westlaw's editorial corpus
- Document analysis: Harvey's Vault is a standing repository, reportedly up to 100,000 files per Harvey's own materials; CoCounsel's Tabular Analysis is a project-scoped review across up to 10,000 documents
- Buying model: CoCounsel offers a small-firm self-serve entry; Harvey is enterprise-quoted at every size
- Heritage: CoCounsel is a Thomson Reuters product line inside a public company's stack; Harvey is independent and venture-backed
Side by side
Harvey and CoCounsel, compared
| Harvey | CoCounsel | |
|---|---|---|
| Origin | Founded 2022, independent, VC-backed | Built on Casetext, acquired by Thomson Reuters for $650M, closed Aug 2023 |
| Ownership | Independent, $11B valuation (March 2026) | Thomson Reuters product line (public company) |
| Core products | Assistant, Vault, Knowledge, Workflow Agents | CoCounsel Essentials / Legal, Tabular Analysis, Deep Research |
| Research content | Citation-backed Knowledge product; publisher integrations where licensed | Westlaw and Practical Law (requires corresponding subscriptions) |
| Bulk document analysis | Vault (up to 100,000 documents, per Harvey materials) | Tabular Analysis (up to 10,000 documents, 100 questions) |
| DMS integrations | SharePoint, Box, iManage, Google Drive (per Harvey materials) | iManage (cloud and on-premises), HighQ, NetDocuments, SharePoint |
| Security certifications (official) | SOC 2 Type II, ISO 27001, ISO 27701, ISO 42001, AIUC-1 | SOC 2 Type II, ISO 27001, ISO 42001 |
| Small-firm entry path | None published; demo-gated at all sizes | Self-serve configurator for firms of roughly 10 attorneys or fewer |
| Reported user / customer scale | 100,000+ lawyers, 1,300+ organizations (per Harvey materials, March 2026) | 1 million professional users (LawSites, Feb 2026) |
Where Irys fits
A different set of promises, with the proof published
Harvey and CoCounsel are both credible platforms for their buyers. Irys makes a different set of promises, and publishes the proof for each:
- Published economics. Irys One is $299 per month and Irys Teams is $329 per seat per month, with no per-token or per-query overage on the advertised Irys One plan, on the pricing page, not behind a quote.
- Stateful architecture. Matters keep their full context: facts, documents and authorities persist across sessions instead of resetting with every chat.
- Finished work. Drafting ends in a finished, signable document: source-linked output, citation review through Cite Check, built-in e-signature.
- Start today. A 7-day trial with no credit card: evaluate on a real matter before anyone talks to sales.
Head-to-head pages: Irys vs Harvey and Irys vs CoCounsel.
FAQ
Frequently asked questions
Is CoCounsel or Harvey better for litigation research?
If your firm holds Westlaw or Practical Law subscriptions, CoCounsel connects AI output directly to that infrastructure, a real advantage for litigation-heavy research. Harvey's Knowledge product is also citation-backed but lacks the same depth of case law indexing unless paired with a separate publisher integration.
Does CoCounsel require a Westlaw subscription?
Yes, for research that runs on Westlaw content. CoCounsel's own materials state that Westlaw and Practical Law results require the corresponding subscriptions; base CoCounsel Essentials covers document work and drafting without them.
Can a small firm buy CoCounsel without enterprise sales?
Firms of roughly ten attorneys or fewer can use Thomson Reuters' self-serve configurator, priced by firm size, jurisdiction, and contract term. Larger firms, and those wanting the full CoCounsel Legal stack, go through a sales-quoted process, the same as Harvey.
How many documents can CoCounsel's tabular review handle compared to Harvey's Vault?
CoCounsel's Tabular Analysis handles up to 10,000 documents and 100 questions per review, per Thomson Reuters' materials. Harvey's Vault holds up to 100,000 documents, emails, and queries per Harvey's materials, as an ongoing repository rather than a single bounded review.
Is Harvey or CoCounsel better for firms already using Thomson Reuters products?
CoCounsel has a structural advantage: the same company maintains Westlaw and Practical Law, so the integration and billing relationship already exists. Harvey has no such built-in relationship with Thomson Reuters content.
What security certifications do Harvey and CoCounsel have?
Harvey's official trust center lists SOC 2 Type II, ISO 27001, ISO 27701, ISO 42001, and AIUC-1 certification. Thomson Reuters describes CoCounsel as covered by SOC 2 Type II, ISO 27001, and ISO 42001 certification, with a zero-retention API architecture and encryption in transit and at rest.
Who publishes this comparison?
Irys (formerly Iqidis), a legal AI platform for solo lawyers and small to mid-size firms. Irys competes with both Harvey and CoCounsel at the smaller-firm end of the market, which is why it appears only in the closing section: the comparison above rests on each vendor's own public record.
This comparison is based on publicly available information reviewed on August 8, 2026. “Not publicly listed” means no standard public price or term was found on the vendor's official materials as of that date; actual pricing, features and contract terms may vary and may require particular plans, content subscriptions or integrations. Product capabilities change frequently; confirm current details with each vendor before making a purchasing decision. Harvey, CoCounsel and all other product names are trademarks of their respective owners, used here for identification and comparison only, with no affiliation or endorsement implied. Irys (formerly Iqidis) publishes this page and competes with both platforms. This page is informational and is not legal, financial or purchasing advice.
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