Inside OpenAI's Codex Comeback: From Failed Launch to the App That Ate ChatGPT
every · x · 2026-10-20
Every published "How Codex Happened," a long-form story by Dan Shipper, with a visual trailer produced using Remotion, ElevenLabs, and Opus 5.5.
Key threads from the public portion:
- Shipper recalls being in OpenAI's Mission Bay office the night before the GPT-5 launch in summer 2025, after Every's ten-person team spent a week stress-testing the model early for their Vibe Check review
- The team's reaction to GPT-5's coding in Codex was muted; Shipper believed OpenAI was losing its lead in AI coding
- Codex's earlier cloud version had missed product-market fit, and the team was mid-pivot to a version running locally in developers' terminals
- Today Codex is the centerpiece of OpenAI's comeback — the product that "swallowed ChatGPT from the inside" and anchors everything the company builds next
The full piece is paywalled, but it's a detailed narrative of OpenAI's coding-product turnaround.
Related event: Every Chronicles How OpenAI Codex Turned Failure into Comeback(3 posts)→
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