Longeye, a San Francisco startup whose AI helps detectives dig through jail calls, phone downloads, video and bank records, announced a $20 million Series A on Wednesday, Oct. 21, led by N47 with Andreessen Horowitz's American Dynamism practice joining.

Why it matters: Modern cases produce more digital evidence than investigators can read by hand. More than 50 justice agencies now use Longeye, and a former San Ramon police chief is leading its push to bring more departments on board.

By the numbers

  • More than 2,300 investigations worked on the platform, including at least 230 homicide cases and at least 160 sexual violence cases, the company said.
  • More than 15 million pages of documents, 10 million images and 32,000 hours of audio and video reviewed.
  • About 200,000 investigator-hours of evidence review, which the company compares to 100 investigators working full time for a year.

Bay Area connection

Denton Carlson, former chief of the San Ramon Police Department and a board member of the California Police Chiefs Association, leads Longeye's expanded Ambassador Team, which helps agencies adopt the tools.

"For agency leaders, the question is whether that work happens inside a system where you can control the data, reconstruct what happened, and verify the result," Carlson said in the announcement.

How it handles evidence

Longeye says every finding links back to the original message, document or recording so investigators can check it, that it meets the FBI's CJIS security policy, and that agencies keep ownership of their data.

It also offers free access to eligible public defender offices and defense nonprofits through a grant program.

Co-founders Guillaume Delépine and Danielle Man previously worked at drone maker Skydio and Apollo GraphQL, N47 said.

More SF AI funding: Dream Labs raises $90M to rent robot brains.