Legal AI · Multi-agent
Harvey
Domain-specific legal AI for the world's most demanding work.
Harvey builds custom large language models and agentic workflows for elite law firms and corporate legal teams. Used for research, drafting, due diligence and multi-step matter workflows, with enterprise controls and matter-level grounding.
Facts above are from the public file. The view is ours. We do not publish a numeric score. Methodology
- Practice
- Corporate / M&A, Contracts, Litigation, Legal research, Finance / markets
- Jurisdictions
- United States, England & Wales, European Union, Global
- Autonomy
- Multi-agent
- LLM family
- Custom + frontier (OpenAI-class)
- Evals
- Private firm evals, domain benchmarks, red-team
- Pricing
- Enterprise · Talk to sales
- HQ
- San Francisco / London
- Last checked
- 13 Sept 2026
- Last updated
- 13 Sept 2026
- Deployment
- Private cloud / VPC
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Evidence
Source-backed items on file. Coverage is not a quality score. Not paid placement.
Evidence file
5 independent (1 historic) · 1 customer
Well documented · weight 5.25Last checked 13 Sept 2026
17 Feb 2023 · LawSites
Allen & Overy deploys Harvey firmwide after a 3,500-lawyer trial
Bob Ambrogi reported Allen & Overy as the first major firm to put GPT-based Harvey into production, with more than 3,500 lawyers across 43 offices using it after a November trial.
Independent reporting · Independent source · Historic · Source ↗
6 Apr 2025 · A&O Shearman
A&O Shearman and Harvey roll out agentic AI for complex legal workflows
The firm announced agentic, multi-step Harvey agents for antitrust filing analysis, cybersecurity, fund formation and loan review, for internal use and clients.
Product documentation · Customer source · Source ↗
2 Dec 2025 · Legal IT Insider
RSGI/Harvey adoption report: 40 firms and in-house teams surveyed
Legal IT Insider reported RSGI’s survey of 40 Harvey customers: 85% said legal work was executed faster, with named firms including A&O Shearman, Ashurst and Paul Weiss.
Independent reporting · Independent source · Source ↗
10 Dec 2025 · Artificial Lawyer
CMS expands Harvey firmwide across 50+ countries
Independent report that CMS rolled Harvey out across 21 member firms and more than 7,000 lawyers in 50-plus countries, with internal analysis showing 93% of users reporting productivity gains.
Independent reporting · Independent source · Source ↗
25 Mar 2026 · CNBC
Harvey valued at $11 billion after $200 million round
CNBC reported Harvey raised $200 million at an $11 billion valuation, co-led by GIC and Sequoia, to expand its legal AI tools for law firms and professional services.
Independent reporting · Independent source · Source ↗
9 Sept 2026 · Artificial Lawyer
Harvey raises $550 million at $15.5 billion and buys Guardrails AI
Artificial Lawyer reported a $550 million round at a $15.5 billion valuation, plus Harvey’s acquisition of Guardrails AI for agent security.
Independent reporting · Independent source · Source ↗
Features
Evidence-backed modules and features. Firm Zero Framework™ classifications are new.legal analysis, not source facts.
Transaction workflows · agent
Due-diligence review
Vendor name: Diligence rooms
Source terminology: diligence rooms
Use cases: Due-diligence review
Transaction workflows · agent
Multi-document issue identification
Vendor name: Agentic workflows
Source terminology: agentic workflows
Use cases: Due-diligence review, Multi-document issue identification
Related organisations
- A&O Shearmanuses product