Spines announced $64 million in growth capital on 9 November 2026, according to a release issued by the company through PR Newswire and reports by Fortune and Publishers Weekly. Only $29 million of it is new equity: a Series A-1 round led by Zeev Ventures, with participation from Aleph, NordStar, M-Fund, LionTree and angel investor Dan Senor. The other $35 million is a non-dilutive growth financing facility from Twelve. Fortune describes Twelve as a credit-focused investment management firm; Publishers Weekly says Spines can draw on the facility and must repay it, and that it gives the lender no ownership stake. The release gives no terms for the facility, and TechStartups says the company has not confirmed that it drew the full amount. The valuation was not disclosed.

Funding history

Spines raised a $6.5 million seed round led by Aleph in April 2024 and a $16 million Series A led by Zeev Ventures in November 2024, according to TechCrunch and Calcalist. Publishers Weekly says the new money brings total funding to nearly $90 million; adding the 2024 total of $22.5 million to $64 million gives $86.5 million. The equity raised across the three rounds is $51.5 million. Chief executive Yehuda Niv told Publishers Weekly he chose “A-1” over “B” because “I don’t want the next one to be C round.” The release says only that the money will accelerate Spines’ expansion; Niv told Fortune the equity is for product development and expansion into the UK, Canada and Australia, and told Publishers Weekly that acquisitions, most likely of local publishers, are part of the strategy, without naming any deals.

What Spines does

The release describes an agentic AI publishing platform that helps authors turn written manuscripts into published books. Software agents handle editing, proofreading, cover design, formatting, metadata, translation, audiobooks, distribution, royalty management and marketing, and authors can also use human editors, proofreaders and designers. It says translation is available from English into seven languages, with 20 planned over the next six months. Authors pay for packages and Spines takes a share of royalties, according to Fortune. Niv said in the release: “We don’t believe the future of publishing is AI writing books. We believe the future is AI giving authors superpowers.” He told Fortune and Publishers Weekly that Spines publishes only books written by humans and uses software to flag AI-generated manuscripts.

Company claims

The following figures are the company’s and have not been independently verified. The release says Spines has a $50 million revenue run rate and 400% year-over-year growth; Publishers Weekly explains that a run rate multiplies monthly revenue by 12 and reports Niv saying it was about $5 million at the end of 2024. The release says more than 8,000 authors have published through the platform and about 400 new authors join each month, and that publishing time has fallen from 12–18 months to weeks across more than 100 distribution channels. Fortune reports about 350 employees and says Niv described early talks with one of the Big Five US publishers about running its services on Spines’ agents.

Sources and notes

Sources: the PR Newswire release (9 November 2026), which Lens read in full; Fortune (Jeremy Kahn, exclusive, 9 November); Publishers Weekly (Ed Nawotka, 10 November); Refresh Miami (9 November); TechStartups; and 2024 reports by TechCrunch and Calcalist. The “$64 million” headline combines equity and a facility, and the release’s subhead says the company “hits $50M in revenue” while its text says run rate. Package prices differ: Fortune reports packages starting at about $3,000 and running to $20,000, while Publishers Weekly says about $5,000 to $20,000, both citing Niv. Sources also differ on headquarters: the release is datelined Tel Aviv and New York, Fortune reports offices in Israel and New York with research and management in Herzliya, Publishers Weekly calls the company Miami-based, and Refresh Miami says Boynton Beach. Lens found no statement from Twelve.

Image: A pile of books seen side-on. Photo: freestocks.org, CC0, via Wikimedia Commons (2018). Stand-in image; it does not show Spines or its authors.