Longeye, an AI-powered investigative workspace built for the justice system, has raised a US$20 million Series A round led by N47, with participation from Andreessen Horowitz's American Dynamism practice. The company also announced that more than 50 justice agencies across local, state, and federal levels now use the platform. The new funding will help accelerate Longeye's growth and expand its footprint throughout the US justice system.
Scale of Adoption and Investigative Work
Justice agencies on Longeye have worked more than 2,300 investigations and reviewed more than 15 million pages of documents, 10 million images, and 32,000 hours of audio and video. The platform has also processed more than a billion rows of financial and phone records, representing more than 200,000 investigator-hours of evidence review. That workload is equivalent to 100 investigators working full-time for a year and includes at least 230 homicide investigations and 160 sexual violence cases.
Investor Confidence in Responsible AI
T.J. Rylander, General Partner at N47, said every investigation produces evidence that could make the justice system more effective and fair, but much of it goes unread because teams lack time. He added that investigators using the platform consistently reported Longeye helped them work through evidence that would otherwise have remained untouched in a way they could check and defend. Rylander described the company's approach as long-term and responsibility-first, standing out from other AI and justice companies.
Engineering for Investigative Integrity
Longeye lets investigators search and analyze evidence already collected in an investigation rather than relying on general-purpose chatbots. The company pioneered the Faraday Method, an engineering system designed specifically around how criminal justice information must be handled. Longeye has filed patents for its citation engine, which links every substantive finding to the original message, document, or recording, and it meets the FBI's CJIS Security Policy while allowing agencies to retain ownership of their data.
A Team Built for Agency Adoption
Denton Carlson, former chief of the San Ramon Police Department and board member of the California Police Chiefs Association, leads Longeye's expanded Ambassador Team. He is joined by Carrie Ellis, president of the Texas Police Chiefs Association, and Slate Chisholm, a former detective with the Metro Nashville Police Department. The group will assist agencies with implementation, training, and the responsible adoption of AI in investigative workflows.
Practitioner Results in the Field
Lauren Cunningham, a homicide detective with the Oklahoma City Police Department, said her team previously spent significant time combing through jail calls, videos, cell phone downloads, search warrant returns, and financial records. She explained that Longeye helps detectives find the few minutes or pages that matter most and has surfaced evidence that might have been missed or taken weeks to locate. Cunningham noted that the platform allows her to spend more time on time-sensitive follow-up work and in the field.
Expanding Access Across the Justice System
Longeye also provides access to public defenders through a grant program that offers eligible public defender offices and defense nonprofits free use of the platform. This initiative extends AI-assisted evidence review to both sides of the justice system. The company said its work is designed to bring meaningful relief to investigators, prosecutors, and defense teams as a whole.
Longeye's Series A round and rapid adoption indicate growing demand for accountable AI tools in the justice system. With 50 agencies already active and thousands of investigations processed, the company is positioning itself as a controlled, verifiable workspace for modern evidence review. Its focus on compliance, citation integrity, and equal access for public defenders reflects a broader effort to support the justice system without sacrificing oversight.