How Codex Happened: Inside OpenAI's comeback in AI coding, from failed launch to ChatGPT's centerpiece
every · x · 2026-10-22
Every's Dan Shipper chronicles OpenAI's comeback in AI coding. In summer 2025, his team got early GPT-5 access and found its Codex coding performance underwhelming—he even recalls thinking OpenAI might lose its lead. The original cloud Codex launch had failed to find product-market fit, and the team was mid-pivot to a local, terminal-based version. Today Codex anchors everything OpenAI builds, having "swallowed ChatGPT from the inside."
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