Codex AI is a publishing library for a new era — books authored in collaboration with AI, edited by domain experts, and bound for readers who want depth without delay.
Every book in our library is authored in deep collaboration with AI, then refined and curated by domain experts. The result: rigorous, current, and human in voice — without the years of waiting traditional publishing requires.
Each book begins as a deep, structured collaboration with frontier AI — Claude as the co-author, an expert as the director.
Every page is reviewed, fact-checked, and shaped by a human author whose name sits on the cover. Nothing ships unless it's true and useful.
Ebook, web, and print. Read in your browser, sync across devices, or hold the paperback. The library, not the format, is the product.
A complete journey from your first AI-assisted line of code to production cloud infrastructure. Four volumes, one continuous narrative — built with Claude, written for the developer who wants to ship.
Bharathi Nanjappa, writing technical books in deep collaboration with Claude. The AI Developer Series is the first body of work under this imprint.
→ visit imprint pageCodex AI is the publisher. The books themselves are written under imprints — distinct author identities with their own voice, audience, and visual language. It's how we keep the library coherent while making room for many writers, many genres.
B.N.Code is the first imprint, focused on engineers learning to build with AI. More imprints — covering fiction, philosophy, and other domains — are being established now.
The actual workflow — chapter outlining, draft generation, editorial passes, and the moments where the AI surprised me.
The opening chapter of Volume 1, free to read. Get your editor configured for AI-native development in fifteen minutes.
Most friction in AI-assisted development comes from a misconfigured environment. Get Node, Git, VS Code, and Claude Code set up once — correctly.
Claude is not one model — it is a family with different sizes, speeds, and price points. Learning when to reach for each is a craft skill that pays for itself many times over.
The line between tool and co-author is moving fast. Here's how Codex AI defines it, and why every book carries a Claude credit.
