# Introducing GPT-5.3-Codex | OpenAI

<https://openai.com/index/introducing-gpt-5-3-codex/>

- Host: [openai.com](https://links.thingelstad.xyz/hosts/openai.com/)
- Saved: February 5, 2026 (2026-02-05T22:51:45Z)
- Record: https://links.thingelstad.xyz/links/068683f1f425/
- JSON: https://links.thingelstad.xyz/links/068683f1f425.json

## What Jamie wrote

The combination of this new GPT-5.3-Codex model and OpenAI's recent release of a Mac native app for Codex got me to engage with Codex again. I was much more impressed than I was the first time I used it. I used it to create a web project and it did a really good job. It was a simple task, but it handled it well and created a good output. I continued to use it but after running several tasks I found myself wanting for the Claude Code interface.

After opening Claude Code on that same project I realized the difference in my head. Both Codex and Claude Code are agentic environments but the way they approach it just feel different. Codex has this mental model that feels like I’m a user asking an agentic developer to do a thing for me. I find it a bit frustrating since it puts this barrier between me and the agent. Claude Code feels more like an agentic pair programmer. I feel like I’m "in it" with Claude and we are co-creating. 

Ultimately it will depend on what you're doing and want to experience but for me, right now, I much prefer the Claude Code experience over the Codex one.

## Facts

- Kind: [Page](https://links.thingelstad.xyz/kinds/page/)

## Appears in

- [WT340: Weekly Thing 340 / Moltbook, Frontier, Poster](https://weekly.thingelstad.com/archive/340/), Notable

## Same host

- [Our approach to advertising and expanding access to ChatGPT | OpenAI](https://links.thingelstad.xyz/links/8df406a4a082/) (openai.com, January 20, 2026)
- [How countries can end the capability overhang | OpenAI](https://links.thingelstad.xyz/links/832eb9ed7c76/) (openai.com, January 22, 2026)
- [Introducing Prism | OpenAI](https://links.thingelstad.xyz/links/4da412f925fe/) (openai.com, January 29, 2026)
- [Introducing the Codex app | OpenAI](https://links.thingelstad.xyz/links/0345dfcb87ab/) (openai.com, February 5, 2026)
- [Introducing OpenAI Frontier | OpenAI](https://links.thingelstad.xyz/links/9e1fa854ea22/) (openai.com, February 5, 2026)

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## Elsewhere

- Wayback Machine: https://web.archive.org/web/*/https://openai.com/index/introducing-gpt-5-3-codex/