Blackletter, a US-based technology-driven law firm, has raised $6 million in seed funding to develop its artificial intelligence platform and expand its legal services for startups and growing businesses.
The funding round was led by New York-based venture capital firm Lerer Hippeau, with participation from Seven Stars, Maple VC, Garage Capital and Ripple Ventures. Individual investors included AI industry founders Aidan Gomez, Ivan Zhang, Nick Frosst, Jae Lee and Sara Hooker.
Founded in 2026, Blackletter combines experienced lawyers with proprietary AI software to deliver legal services through a fixed-fee pricing model rather than traditional hourly billing.
Building an AI-Powered Legal Operating Platform
Blackletter is developing BlackletterOS, a technology platform designed to improve how legal work is managed and delivered.
The platform uses agentic AI to understand client business requirements, process legal information and coordinate multi-step assignments. It works alongside experienced attorneys, who oversee legal matters and provide the expertise needed to support clients.
The company’s services cover several areas of business law, including corporate law, commercial agreements, financing, mergers and acquisitions (M&A), and employment matters.
Blackletter aims to make legal services more predictable through fixed-fee pricing, helping businesses understand legal costs without relying on traditional hourly billing arrangements.
The company says it currently serves more than 75 companies and investors, including early-stage and growth-stage businesses.
Funding to Support Platform and Team Expansion
Blackletter plans to use the $6 million in seed funding to further develop BlackletterOS, strengthen its technology infrastructure and expand its legal and engineering teams.
The investment will support the company’s efforts to combine AI-powered workflows with professional legal services and expand its fixed-fee model across business law practice areas.
Headquartered in New York City, Blackletter was founded by CEO Jonathan Rosenbluth, David Stewart and Avi Brudner. The company aims to use AI to streamline legal operations while keeping experienced attorneys involved in delivering legal advice and services.
