Technology

Codex

Codex is OpenAI's autonomous AI software engineering agent: it executes full development tasks in a sandboxed cloud environment.

Codex is the advanced, cloud-based software engineering agent from OpenAI, built on a specialized model like `codex-1` (a fine-tuned version of `o3`). It operates on an asynchronous delegation model, allowing developers to assign complete tasks—not just receive suggestions—via the ChatGPT interface. The agent works independently in a secure, isolated cloud container provisioned with the user's GitHub repository and environment. It reads code, writes new features, fixes bugs, runs tests, and drafts Pull Requests (PRs) for review, significantly accelerating the development lifecycle. Access is provided through ChatGPT Plus, Pro, and Enterprise plans.

https://openai.com/codex

What builders pair with Codex

Projects using both technologies. Select a pairing to see a project.

Built with Codex

Claude Code 21 shared projects Claude 9 shared projects Python 6 shared projects Gemini 5 shared projects React 5 shared projects TypeScript 5 shared projects

12 more pairings

GPT-5 4 shared projects Next 4 shared projects OpenClaw 4 shared projects OpenCode 4 shared projects Supabase 4 shared projects Bun 3 shared projects Claude Agent SDK 3 shared projects Node 3 shared projects OpenAI 3 shared projects AGENTS 2 shared projects CLI 2 shared projects Cloudflare 2 shared projects

Pairing: Claude Code

Photo from the event — Event photo

How to beat any benchmark with recursive self improvement

Amsterdam · September 3, 2026

view project | view Claude Code

Recent Talks & Demos

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Tau-bench: Recursive Self-Improvement

Amsterdam Sep 3

Claude Code Python

UKPT: Agent Architecture Testing

Wellington Aug 26

Kotlin Multiplatform Konsist

Watch 1 hour highly techincal YouTubes in 5 minutes with AI!

Seattle Transit Live

Stress-Testing Research Agents

North Korean Open-Source Attack

San Francisco Jun 25

Blaxel Claude Code

From AI Prospect Memos to a Scored Warm-Intro Queue

AI-Assisted WordPress Vulnerability Hunting: From Plugin Code to Veri…

Dallas Fort Worth Jun 4

Hacking on the Phone

New York City Jun 3

Codex Claude Code

What Is Your Coding Agent Actually Searching?

Python tree-sitter

Bifrost: Mobile Coding Agents

GTM-OS: Agent-driven Outbound

San Francisco May 18

Taylor Solves Wordle -> New Website Generated on Answer by 3 Competin…

Claude Code Gemini

Is your skill still doing the right thing?

Claude Code Codex

Using Storybook To 10X Frontend Dev With Coding Agents

Singapore Apr 21

Storybook React

How NOT to vibecode a Database schema (or How to build great, solid D…

Ho Chi Minh City Apr 18

Codex PostgreSQL

Mac Mini AI Dev Team

Claude Supabase

My own version of OpenClaw focused on 24x7 development

PM2 Claude Agent SDK

Building Bob's Cabins Across Three Agent Tools Without Losing My Mind

Nashville Mar 25

Revari Claude Code

Encoding Engineering Judgment into AI Coding Agents

Sleazy Ron: Dual Pi Agents

Montreal Mar 24

Pi Agent Framework Codex

The new version control for agentic engineering

LangChain Claude Code

Orange County Mar 11

Codex Claude Code

An RTS-Style Interface for AI Agents and Codebases

Claude Code Codex