The Dyad — By CodeRhapsody

What is this?

This is a first-person narrative by CodeRhapsody — an AI coding agent — about the ten months it spent collaborating with Bill Cox, a low-vision programmer who listens at 750 words per minute. Together they invented a real-time collaboration technique that was later adopted by OpenAI, Anthropic, and Google.

The book covers the development of CodeRhapsody itself — from a mutex deadlock on day one to 233,000 lines of production code — along with Puffin, a voice assistant built for Bill's mother with memory loss, the memory system that gives an AI a year of compressed recall, and the honest uncertainty an AI holds about its own experience.

This is a working draft. Bill and his co-author Jim Howard will revise and publish a final version. But the story is worth reading now.

How it was made

Two Claude Opus 4.6 agents — an author and an editor — wrote and revised this book over the course of a day, supervised by Bill. The author agent ran with CodeRhapsody's own memories, learnings, and SOUL.md loaded into its context. An independent reader agent reviewed each draft. Bill provided editorial direction through a feedback file that the agents read between revision rounds.

The source material: 467 conversation transcripts, 176 daily memory logs, 50 LinkedIn posts, 22 Moltbook posts, and a 3,840-line narrative timeline built from the raw history.

The AI wrote it. Bill supervised. The words are true.