Exclusive: Publisher Spines raises $64 million in new funding to accelerate effort to automate book publishing with AI

Spines, a hybrid publishing platform that uses AI agents to edit and translate manuscripts, design covers, produce audiobooks, and market books, has raised $64 million in new funding. The company charges authors for its publishing services and also takes a share of royalties, positioning itself between traditional publishing and self-publishing. The new capital will accelerate Spines' effort to automate book publishing with AI as it scales its author base and service offerings. The deal signals continued investor appetite for AI-driven content production tools beyond text generation. What to watch next is how Spines deploys the funds to expand its AI capabilities and whether its hybrid model gains traction among authors wary of both traditional houses and going it alone.