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ToolsThe story, in brief

How Codex is built

NOBODY TALKING: Everyone debates which AI coding tool wins. Nobody is talking about how OpenAI actually builds Codex.

Reporting by Pragmatic Engineer 1 min brief
Paper-cut illustration of a coral software window opening into a three-dimensional drafting space.
New tools for building and creating with AI.AI illustration by KeyNews
The KeyNews take

Why it matters

Understanding how leading AI coding agents are architected gives technical leaders insights into building internal AI development tools and evaluating vendor capabilities.

The key facts

3 to know

  1. Exclusive deepdive into OpenAI's Codex team methodology

  2. Internal engineering usage patterns revealed

  3. Future software engineering implications outlined

Go to the source

Pragmatic Engineernewsletter.pragmaticengineer.com

Publisher excerpt: A deepdive into how OpenAI's Codex team builds its coding agent, how engineers use it, and what it could mean for the future of software engineering. Exclusive
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