Spines, an AI-powered publishing startup, announced that it has secured $64 million in new growth capital. The company said its annual revenue run rate reached $50 million following 400% year-over-year growth.
The financing has two parts. One is a $29 million Series A-1 equity round led by Zeev Ventures. The other is a $35 million non-dilutive financing facility from Twelve. Existing investors Aleph, NordStar, M-Fund and LionTree took part in the equity round, along with angel investor Dan Senor.
Spines says more than 8,000 American authors have published books through its platform, with about 400 new authors joining each month. The platform uses specialized AI agents for proofreading, cover design, formatting, distribution, royalty management and marketing. Authors can also work with in-house human editors and designers. The company aims to shorten a publishing process that can take 12 to 18 months to a matter of weeks.
The Florida angle
Spines is based in Boynton Beach. When Refresh Miami spoke with founder and CEO Yehuda Niv in February 2025, roughly 20 of the company's 100 employees were based in South Florida.
The new capital comes from a mix of equity investors and a financing facility. The source does not say how Spines plans to use the funds or whether it plans to add jobs in Florida.