How Codex Happened: Inside OpenAI's Coding Comeback, From Failed Launch to ChatGPT Takeover
every · x · 2026-10-16
Every CEO Dan Shipper publishes a long-form oral history of OpenAI Codex, built on first-hand interviews with Greg Brockman, Thibault Sottiaux, Alexander Jambrosino, and other core team members. The piece traces Codex from a cloud version that missed product-market fit, through a pivot to local-terminal workflows, to the product that 'swallowed ChatGPT from the inside' and became the foundation of OpenAI's coding comeback. Shipper recounts being in OpenAI's Mission Bay office the night before the muted GPT-5 launch, where the team's own reaction to Codex coding performance was underwhelming. Free to read.
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