Harvey, the artificial intelligence startup transforming legal work, announced a $160 million Series D funding round on November 28, 2025, valuing the company at $8 billion. The round was led by Andreessen Horowitz, with participation from existing investors Sequoia Capital, Kleiner Perkins, and Elad Gil, signaling continued strong investor appetite for vertical AI applications in professional services.
Founded in 2022 by Gabriel Pereyra and Winston Weinberg, Harvey has rapidly become the leading AI platform for legal professionals, with over 50% of Am Law 100 law firms now using the platform alongside in-house legal teams at companies including Bridgewater, Comcast, and Carvana.
The Harvey Platform: What Makes It Different
Harvey differentiates itself from general-purpose AI assistants like ChatGPT through deep specialization in legal work and enterprise-grade security. The platform includes several key components tailored specifically for legal professionals:
Harvey Assistant
The core interface allows lawyers to query Harvey with or without uploading documents. When documents are provided, Harvey generates responses based on the specific content with linked references to source material – crucial for legal work requiring citation accuracy.
Harvey Vault
Perhaps Harvey’s most powerful feature, Vault enables large-scale document review, analysis, and synthesis. Legal teams can upload and analyze up to 10,000 files per project, with AI that understands complex legal concepts beyond simple keyword matching. This dramatically accelerates due diligence in mergers and acquisitions, litigation document review, and compliance audits.
Workflow Builder
Released in early 2025, Workflow Builder allows legal teams to create custom AI-powered workflows without coding. Using either a visual interface or natural language descriptions, firms can build specialized tools for contract analysis, regulatory compliance checks, or case law research tailored to their specific practice areas.
AI Agents
Harvey’s most advanced capability, AI Agents can plan, adapt, and interact with humans to complete complex multi-step legal tasks. Launched to customers in March 2025, these agents handle end-to-end workflows across transactional work, litigation, financial services compliance, and other high-complexity use cases.
Shared Spaces (Just Launched)
Announced alongside the funding round, Shared Spaces enables law firms and clients to collaborate securely in one environment, sharing Vaults, Review Tables, research threads, workflows, and playbooks. This addresses a critical pain point in legal work: secure client collaboration while maintaining attorney-client privilege.
Revenue Growth and Market Traction
Harvey’s financial trajectory has been remarkable. The company surpassed $100 million in annual recurring revenue (ARR) in August 2025, making it one of the fastest enterprise AI companies to reach this milestone. For context, it took Slack four years to reach $100M ARR; Harvey achieved it in roughly three years.
The $8 billion valuation represents a significant increase from Harvey’s $715 million valuation in its Series C round just 14 months earlier. This 11x valuation jump reflects both the company’s rapid revenue growth and the market’s recognition that AI-native legal tools represent a massive opportunity.
Allen & Overy, one of the world’s largest law firms, has been particularly vocal about Harvey’s impact. The firm reports that Harvey has reduced time spent on contract review by 40% and enables junior associates to perform work previously requiring senior partner expertise.
The Technology Behind Harvey
Harvey is built on Microsoft Azure, providing enterprise-grade security, encryption, and compliance essential for handling sensitive legal documents. The company uses multiple AI models, including a custom-trained model developed in partnership with OpenAI specifically for case law analysis.
This custom legal model was trained on millions of legal documents, judicial opinions, and statutes, giving it deep understanding of legal reasoning, precedent analysis, and jurisdiction-specific regulations. It outperforms general-purpose models on legal tasks by significant margins.
Data security is paramount. Harvey implements:
- End-to-end encryption for all documents and communications
- SOC 2 Type II compliance
- Client data isolation ensuring one firm’s information never touches another’s
- On-premises deployment options for highly regulated clients
- Granular access controls and audit logging
Use Cases Transforming Legal Work
Contract Analysis and Drafting
Corporate lawyers use Harvey to analyze contracts, identify non-standard clauses, suggest revisions based on current case law, and draft initial versions of complex agreements. What previously took days of associate time now takes hours.
Legal Research
Harvey can search through millions of cases, statutes, and regulations to find relevant precedents, summarize holdings, and identify trends in judicial reasoning across jurisdictions.
Due Diligence
In M&A transactions, Harvey Vault processes thousands of documents, flagging potential legal issues, regulatory compliance concerns, and material risks that require human review.
Litigation Support
Litigation teams use Harvey to analyze discovery documents, identify relevant evidence, develop case strategies, and draft motions – dramatically reducing the manual document review burden.
Regulatory Compliance
In-house legal departments use Harvey to monitor regulatory changes, assess compliance implications, and update policies across complex regulatory regimes like GDPR, CCPA, and financial services regulations.
Industry Impact and Competition
Harvey’s success is reshaping the legal technology landscape. Traditional legal research platforms like LexisNexis and Westlaw have responded by integrating their own AI features, but Harvey’s AI-native approach gives it significant advantages in user experience and capabilities.
Competing AI legal startups include:
- Casetext (acquired by Thomson Reuters): Offers CoCounsel, an AI legal assistant
- Spellbook: Focuses specifically on contract drafting
- Luminance: Specializes in due diligence and contract review
- Ironclad: Contract lifecycle management with AI features
However, Harvey’s comprehensive platform approach, superior technology, and rapid adoption by elite law firms has positioned it as the category leader.
Impact on Legal Profession
Harvey’s rise raises important questions about the future of legal work. The American Bar Association estimates that AI could automate 20-40% of tasks currently performed by junior associates, potentially reducing the number of entry-level positions at law firms.
However, proponents argue that AI will augment rather than replace lawyers. By handling routine analysis and research, AI frees lawyers to focus on strategy, client relationships, and complex judgment calls that require human expertise.
Early data supports this view. Law firms using Harvey report that associates spend more time on high-value advisory work and less time on document review and research – leading to higher job satisfaction and better client service.
Regulatory Considerations
The legal profession has unique regulatory requirements around attorney-client privilege, confidentiality, and professional responsibility. Harvey has worked closely with bar associations and ethics committees to ensure its platform complies with professional conduct rules.
Key ethical considerations include:
- Lawyers remain responsible for all work product, even if AI-generated
- AI outputs must be verified for accuracy and appropriateness
- Client confidentiality must be maintained when using third-party AI tools
- Potential conflicts of interest if AI training data includes confidential information
Several state bar associations have issued guidance on AI use in legal practice, generally concluding that AI tools like Harvey are permissible if used competently and ethically.
International Expansion Plans
Harvey plans to use the new funding to expand internationally. While currently strongest in the U.S. and U.K., the company is targeting major legal markets including Germany, France, Singapore, and Australia.
International expansion requires customizing the AI for different legal systems, languages, and regulatory frameworks. Harvey is developing specialized models for civil law jurisdictions (Continental Europe), common law markets (Commonwealth countries), and hybrid systems.
Future Product Roadmap
Harvey’s product roadmap includes several ambitious initiatives:
- Real-time Legal Intelligence: Monitoring court filings, regulatory changes, and legal developments to proactively alert clients
- Predictive Litigation Analytics: Using historical case data to predict litigation outcomes and optimal strategies
- Automated Brief Generation: AI agents that can draft complete legal briefs from case facts and legal issues
- Expert Witness Analysis: Analyzing expert witness testimony patterns and credibility across cases
- Multilingual Support: Expanding beyond English to support legal work in 20+ languages
Investor Perspective
Andreessen Horowitz partner David George, who led the investment, explained the firm’s thesis: “Legal services is a $1 trillion global market with minimal technology disruption to date. Harvey is doing for legal work what GitHub Copilot did for coding – making professionals dramatically more productive while maintaining quality.”
Sequoia Capital’s Pat Grady, who has backed Harvey since the Series A, noted: “We’ve invested in every major AI platform company. Harvey’s combination of vertical specialization, enterprise security, and product velocity makes it the clear leader in legal AI. This is a generational company.”
Market Size and Opportunity
The global legal services market is valued at approximately $1 trillion annually, with corporate legal spending in the U.S. alone exceeding $300 billion. Even capturing 5% of this market would represent a $50 billion opportunity.
Beyond law firms, Harvey targets corporate legal departments (over 300,000 in-house lawyers in the U.S.), government legal offices, and legal aid organizations. Each segment has distinct needs and budgets, but all share the fundamental challenge of managing growing legal complexity with limited resources.
Challenges Ahead
Despite strong momentum, Harvey faces several challenges:
- Accuracy Stakes: Legal errors can have severe consequences; any high-profile mistakes could damage reputation
- Incumbent Competition: LexisNexis and Westlaw have deep relationships and switching costs
- Regulatory Uncertainty: Future regulations on AI in legal practice could create compliance burdens
- Talent Competition: Recruiting top AI researchers and legal experts in a competitive market
- Enterprise Sales Cycles: Selling to large law firms involves long evaluation and negotiation periods
Conclusion
Harvey’s $160 million raise at an $8 billion valuation cements its position as the leader in legal AI. With over 50% of top law firms as customers, $100+ million in ARR, and a comprehensive product platform, Harvey is well-positioned to define how AI transforms legal work.
As CEO Gabriel Pereyra stated: “We’re still in the first inning of AI’s impact on legal services. Every lawyer will work with AI within five years. Our mission is to ensure that AI augments legal expertise rather than replacing the judgment, creativity, and advocacy that define great legal work.”
For the legal profession, Harvey represents both an opportunity and a challenge – the opportunity to dramatically improve productivity and service quality, and the challenge of adapting to AI-powered workflows while maintaining professional standards. How the profession navigates this transformation will shape legal services for decades to come.
