OpenAI introduces Harness Engineering, an AI-driven methodology where Codex agents generate, test, and deploy a million-line ...

by Dan Shipper in AI & I The transcript of AI & I with OpenAI’s Thibault Sottiaux and Andrew Ambrosino is below. Watch on X or YouTube, or listen on Spotify or Apple Podcasts. Timestamps Introduction: ...

OpenAI has recently published a detailed architecture description of the Codex App Server, a bidirectional protocol that decouples the Codex coding agent's core logic from its various client surfaces.

GPT‑5.3‑Codex‑Spark releases with ultra-fast coding and 128k context window, redefining interactive development for ChatGPT ...

OpenAI announced on Friday it’s launching a research preview of Codex, the company’s most capable AI coding agent yet. Codex is powered by codex-1, a version of the company’s o3 AI reasoning model ...

GPT-5.3-Codex-Spark is the latest version of OpenAI's Codex and runs completely on Cerebras' wafer-scale engine.

OpenAI has unveiled GPT-5-Codex, a specialized version of GPT-5 designed for agentic coding within Codex. Trained on real-world software engineering tasks, it excels at building projects, debugging, ...

GPT-5.3-Codex is about more than just writing code ...

OpenAI has launched Codex, an AI coding agent integrated into ChatGPT, powered by the upgraded codex-1 model. It automates tasks like bug fixes and feature development, connecting with GitHub for ...