OpenAI Developers
Run long horizon tasks with Codex
A 25-hour Codex experiment that built a working design tool from a blank repository, and the durable planning and verification practices that kept the run coherent.
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Content
Writing, talks, and practical guides.
A growing collection about Codex, AI systems, and putting new capabilities to work.
01
OpenAI Writing
Guides, cookbooks, and articles published through OpenAI.
3 pieces
ChatGPT Learn
Building an AI-Native Engineering Team
A practical guide to weaving coding agents through planning, design, building, testing, review, documentation, and operations—while keeping engineers responsible for judgment and ownership.
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OpenAI Cookbook
Modernizing your Codebase with Codex
A phased playbook for using Codex CLI to modernize a legacy codebase—from a bounded pilot and ExecPlan through discovery, target design, implementation, and parity validation.
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02
Articles
Long-form experiments and field notes, first published on X.
7 pieces
X
Measure Codex by what ships and what it costs to get there
A practical framework for evaluating Codex by cost per successful task—not raw token use—and connecting spend to accepted outcomes, admin controls, and repeatable enterprise rollouts.
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X
I Can Finally Talk to ChatGPT the Way I Actually Think
How I use ChatGPT Voice across Work and Codex to think out loud, split messy ideas into parallel tasks, and keep work moving from the desktop app.
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X
I one-shotted a startup with the Codex app with GPT-5.5
A practical experiment in turning a loose startup idea into a working product foundation with the Codex app, GPT-5.5, plugins, and generated business and product artifacts.
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X
Where do plugins fit in Codex?
A clear mental model for how skills, MCP, apps, and plugins fit together in Codex—and how packaged workflows make the same system useful across engineering and knowledge work.
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03
Videos
Talks and practical walkthroughs for getting started with and deploying Codex.
5 pieces
Duration 3:33YouTube
Deploy Codex with Control - OpenAI
A short overview of how organizations can deploy Codex while maintaining appropriate controls.
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Duration 1:00:00OpenAI × Zapier
OpenAI and Zapier: How enterprise engineering teams are building with Codex
A 60-minute workshop for CTOs, engineering managers, and AI leads on deploying Codex at scale, with governance, rollout patterns, emerging workflows, and live demos from Zapier.
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Duration 1:00:00OpenAI Academy
Codex for Everyone
How everyone—not just technical people—can take advantage of Codex to describe work in plain language, delegate tasks, and turn ideas into useful outcomes.
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Duration 53:02YouTube
Getting started with Codex
A step-by-step onboarding walkthrough covering installation, the CLI and IDE extension, AGENTS.md, prompting, MCP configuration, and advanced workflows.
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More over time
This archive will grow with new writing, walkthroughs, and field notes.
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