Crosby Secures $5.8M to Build Hybrid AI Law Firm Combining Human Expertise and Automation

Crosby Raises $5.8M Seed to Build a Hybrid AI Law Firm

On June 19, 2025, Crosby, a new hybrid AI law firm, announced a $5.8 million Seed funding round led by Sequoia Capital. The round also included backing from Bain Capital Ventures and founders of Ramp and Instacart, marking a strong entrance into legal technology.

Crosby combines lawyers with AI to speed up contract reviews without sacrificing quality. Their approach is simple: use AI to handle initial contract passes and flag common issues, then have lawyers review and finalize, enabling contract reviews in under an hour.

How Crosby Operates Within U.S. Legal Structures

In the U.S., many states restrict Alternative Business Structures for law firms. Crosby navigates this by separating the legal and tech entities. Crosby Legal PLLC operates as the law firm, while Crosby Legal, Inc. powers the technology side. This structure keeps compliance intact while delivering integrated services.

Comparison to Other AI-Driven Legal Models

This model echoes recent developments like Garfield, the UK’s first regulated AI law firm combining generative AI with human review for small claims. Unlike Garfield, which functions as a single regulated entity under the SRA, Crosby’s two-entity setup suits U.S. regulations. Their focus remains on complex but routine contract reviews such as MSAs, DPAs, and NDAs.

Team and Technology

Crosby’s team blends legal experts from Harvard, Stanford, and Columbia Law with engineers from companies like Ramp, Vanta, Meta, and Google. They operate out of New York City, emphasizing close collaboration between lawyers and technologists.

The technology is built around the understanding that law requires attention to detail, semantics, and nuance. AI agents handle standard changes and preliminary redlines, while human lawyers focus on strategic decisions and complex reasoning. This partnership aims to deliver fast, reliable contract review.

Efficiency and Client Impact

Speed is a key benefit. Crosby reports a median contract review time of 58 minutes. Sales and go-to-market teams cite Crosby as a tool to close deals up to 80% faster. Early clients include fast-growing companies like Cursor, Clay, and UnifyGTM.

What This Means for Legal Professionals

Crosby offers a glimpse into how law firms can integrate AI without replacing human expertise. By focusing on routine yet complex contract work and maintaining legal oversight, it sets a practical example for firms looking to adopt technology.

For legal professionals interested in AI integration and upskilling, resources such as Complete AI Training’s courses by job provide practical pathways to stay current.

Final Thoughts

Crosby’s approach reflects a pragmatic blend of legal talent and AI that fits current regulatory frameworks. It addresses a real need for speed and accuracy in contract review, showing how legal services can evolve while keeping lawyers central to the process.