OpenAI Codex, every mention
43 scenes (2025) · ← back to OpenAI Codex
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every year 2025 anyone Shawn Wang 45Ryan Lopopolo 34Brian Fioca 27Akshay Nathan 15Alessio Fanelli 7Samuel Colvin 6Mike Merrill 5Dylan Patel 5Sid Bendre 4Kevin Weil 4
Verbatim, from the transcripts: the passages where OpenAI Codex comes up
[State of Post-Training] From GPT-4.1 to 5.1: RLVR, Agent & Token Efficiency — Josh McGrath, OpenAI
- ▶ 3:45 Josh McGrath Oh, I use codex 2 times in the scene
- ▶ 13:42 Josh McGrath Like, as I was saying earlier with, um, when I use Codex, it does something that would take me much longer, uh, you know, it would take me, like, four hours in, you know, 10 minutes.
- ▶ 16:04 unnamed speaker Clearly an important feature, clearly inspired by codex usage as well, obviously.
- ▶ 22:34 unnamed speaker If we were to throw codecs at it, obviously, we can't do codecs at everything.
[State of RL/Reasoning] IMO/IOI Gold, OpenAI o3/GPT-5, and Cursor Composer — Ashvin Nair, Cursor
One Year of MCP — with David Soria Parria and AAIF leads from OpenAI, Goose, Linux Foundation
- ▶ 1:16:00 Shawn Wang I think, what's the thinking there apart, apart from like, well, would Codex ever be donated to AIF?
Steve Yegge's Vibe Coding Manifesto: Why Claude Code Isn't It & What Comes After the IDE
- ▶ 2:41 Steve Yegge They have people who don't use, uh, codex.
- ▶ 23:28 Steve Yegge It's the, it's the whole, it's this idea that quad code and AMP and Codex,
⚡️GPT5-Codex-Max: Training Agents with Personality, Tools & Trust — Brian Fioca + Bill Chen, OpenAI
- ▶ 5:20 Brian Fioca No, so Codex is, just to be clear, Codex is the frontier coding model that we have that is optimized for its harness. 14 times in the scene
- ▶ 10:39 Brian Fioca With the five series, because it's more general, and it's just about as good as coding as codex for a lot of things. 2 times in the scene
- ▶ 14:57 Brian Fioca And so it can run basically forever without you having to worry about it while it's inside of the Codex harness. 6 times in the scene
- ▶ 23:03 Brian Fioca Like, um, a coding agent, like Codex, a CLI, it used to be back in the old days, like I started out in the nineties working at IBM as a system administrator, and I had to write my own custom software and bash scripts and whatever to, uh,… 5 times in the scene
- ▶ 25:52 Bill Chen And, but also the other thing that I am sort of really like looking forward to are Codex being able to do more, right? 2 times in the scene
⚡️ 10x AI Engineers with $1m Salaries — Alex Lieberman & Arman Hezarkhani, Tenex
- ▶ 13:42 Arman Hezarkhani But yesterday codex was outperforming Claude code on object on, on activities like X, Y, and Z.
⚡ Inside GitHub’s AI Revolution: Jared Palmer Reveals Agent HQ & The Future of Coding Agents
- ▶ 13:24 Jared Palmer And co-pilot CLI, but we also have third party partners like Cloud Code and Codex and Cognition now, like in, uh, Agent HQ.
- ▶ 19:57 unnamed speaker I see like the, the number one pain points that commission has, but also Codex also presumably the other guys is repo setup, which is effectively what dev containers and a Docker file does for you is like,
⚡️ The State of AI Engineer Hiring: Cheating, AI Adoption,Junior Devs — Vivek Ravisankar, HackerRank
- ▶ 15:15 unnamed speaker No, like not only do I work at Cognition and Winsurf, and then I also, you know, am like organizing this AIE code thing, which, uh, you know, you're definitely invited to, but like, it's like, yeah, everyone's launching a terminal and… 2 times in the scene
Terminal-Bench 2.0: the most impt coding agent benchmark of 2025 gets a v2! Launch + Q&A w/ founders
- ▶ 2:29 Mike Merrill So, you know, your cloud codes, your cursor CLI, your codex CLI, and in general, an increase in agents writing code to operate computer systems.
- ▶ 13:46 Alex Shaw It, uh, has popular agents pre-integrated, so Codex, Cloud Code, all of these agents, uh, just plug and play right out of the box.
How Zyphra went all-in on AMD + Why Devs feel faster with AI but are slower — with Quentin Anthony
- ▶ 38:44 unnamed speaker I don't know if you spend any time with like GPT-V codecs and the codecs CLI, but 2 times in the scene
⚡️ Ship AI recap: Agents, Workflows, and Python — w/ Vercel CTO Malte Ubl
Terminal-Bench: Pushing Claude Code, OpenAI Codex, Factory Droid, et al to the limits
- ▶ 5:55 unnamed speaker And I think this all makes sense now with cloud code and codex, but you started working on this before these things got released.
- ▶ 21:49 Mike Merrill The reason for this is that if you go and use an agent like Claude code or codec CLI or even open hands, it's not clear to the degree to which this agent has been optimized to make up for some of the weaknesses of a particular model, or… 4 times in the scene
DevDay 2025: Apps SDK, Agent Kit, MCP, Codex and why Prompting is More Important than Ever
- ▶ 38:52 Sherwin Wu Obviously Codex helps speed it up quite a bit now, but, um, it, yeah,
- ▶ 39:14 Shawn Wang Since you have, since you did the codex mention, maybe a quick tip from each of you on codex power user tools or tips. 10 times in the scene
Amp: The Emperor Has No Clothes
- ▶ 3:38 Quinn Slack First, it started with Copilot, and then, Cody, we were really good at Chatrag, and then Cursor and Windsurf showed that kind of IDE forks and partially agentic things could get better and better, and then, you know, the next generation,…
- ▶ 22:32 Quinn Slack The rate of progress overall that a lot of these other tools that are great, like cloud code and codex and cursor and so on that they've forgotten what made them great and what made them grow so fast, which is building the very best…
- ▶ 1:01:51 Alessio Fanelli And every model was failing until GPT-V Codex and Codex CLI was like the first time I got it in like one shot. 2 times in the scene
Greg Brockman on OpenAI's Road to AGI
- ▶ 22:55 unnamed speaker I think like, you know, for me in cursor and in codex, it feels clear that the model is better when I give it hard tasks.
- ▶ 27:31 unnamed speaker You've always mentioned, I think, that the roadmap for Codex and OpenAI's coding capabilities, since we're there, is that the background sort of suite agents sort of merge with the NIDE agents.
- ▶ 49:48 Greg Brockman And then you have your codex infrastructure that has a local agent and a remote agent, and that is able to seamlessly, you know, interplay between the two, um, and then is able to multiplayer.
The AI Agenda: GPT5 leaks and the business of AI News — Steph Palazzolo, The Information
- ▶ 37:23 Alessio Fanelli Um, and I think obviously open AI wants to get the same type of data with codecs, but I think they're way far behind as far as adoption, at least in our, in our circles.
⚡️Composio: 10,000+ tools that evolve for Agents — Karan Vaidya and Soham Ganatra
- ▶ 20:41 Karan Vaidya Uh, you can use probably codecs, uh, with Grok four as well, but, uh,
The RLVR Revolution — with Nathan Lambert (AI2, Interconnects.ai)
- ▶ 51:53 Alessio Fanelli I've been using the codex vessel van thing, and I feel like most of the generations are, like, you know, five percent different from each other.
⚡️Using RFT to Build Clinical Superintelligence
- ▶ 20:55 Shawn Wang The OpenAI Codex team and they were like, yeah, you, you went to college and you have a, you have basic knowledge of software, but here we are giving them like the first few months, maybe the first year of being on the job training.
Cline: The Collaborative AI Coder
- ▶ 57:12 Shawn Wang So, the instantiations of this now, I would say, are background agents is, it would be codecs, for example, like, not spinning up, you know, one PR per minute, and, or Devin, or Cognition. 2 times in the scene
⚡️Anthropic vs Cognition on Multi-Agents: A Breakdown with Dylan Davis
- ▶ 23:05 Dylan Davis It's not as beautiful, but this is for, uh, for Codex.
Scaling Test Time Compute to Multi-Agent Civilizations — Noam Brown, OpenAI
- ▶ 33:28 unnamed speaker You released Codex recently, but I would love to talk through the known Brown coding stack, what models you use, how you interact with them. 8 times in the scene
The AI Coding Factory
Tiny Teams: $6m ARR, 5m users with 4 employees — Sid Bendre, Oleve (Quizard AI/Unstuck AI)
- ▶ 1:28 Sid Bendre We like, what was interesting actually to note is back then we had no LLM costs when we launched, um, because we like back then Codex was actually a model that was live. 4 times in the scene
- ▶ 9:25 unnamed speaker But Codex did not have this. 3 times in the scene