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Building more with GPT-5.1-Codex-Max

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Re: Building more with GPT-5.1-Codex-Max

#321

Earlier quoted context omitted.

Skills are more than just reusable prompts, since they can be packaged alongside with runnable Python or Node scripts that the model can use to achieve what it needs.

Not just Python and Node. Package anything you want with them, that's what makes them convenient.

It seems to me that skills are the same as projects on the web interface, but with executable files

Re: Building more with GPT-5.1-Codex-Max

#322
post #194

Earlier quoted context omitted.

https://www.dbreunig.com/2025/06/22/how-contexts-fail-and-ho... This guy has a good write up on the topic

Irrelevant nonsense can also poison the context. That's part of the magic formula behind AI psychosis victims... if you have some line noise mumbojumbo all the output afterward is more prone to be disordered. I'd be wary of using any canary material that wouldn't be at home in the sort of work you're doing.

What is you tell it to end output with certain character?

Re: Building more with GPT-5.1-Codex-Max

#323
post #194

Earlier quoted context omitted.

Irrelevant nonsense can also poison the context. That's part of the magic formula behind AI psychosis victims... if you have some line noise mumbojumbo all the output afterward is more prone to be disordered. I'd be wary of using any canary material that wouldn't be at home in the sort of work you're doing.

What is you tell it to end output with certain character?

It is a distraction from its intended purpose

Re: Building more with GPT-5.1-Codex-Max

#324

Earlier quoted context omitted.

> As the context fills up, the LLM places less attention on further and further back in the context, that's why the LLM seems dumber and dumber as a conversation goes on. This is not entirely true. They pay the most attention to the things that are the earliest in history and the most recent in it, while the middle between the two is where the dip is. Which basically means that the system prompt (which is always on t…

Do you have any idea why they (seemingly randomly) will drop the ball on some system prompt instructions in longer sessions?

Larger contexts are inherently more attention-taxing, so the more you throw at it, the higher the probability that any particular thing is going to get ignored. But that probability still varies from lower at the beginning to higher in the middle and back to lower in the end.

Re: Building more with GPT-5.1-Codex-Max

#325
post #56

I've been using a lot of Claude and Codex recently. One huge difference I notice between Codex and Claude code is that, while Claude basically disregards your instructions (CLAUDE.md) entirely, Codex is extremely, painfully, doggedly persistent in following every last character of them - to the point that i've seen it work for 30 minutes to convolute some solution that was only convoluted because of some sentence I t…

Have you tried giving Codex instructions on how to hack a solution together?

(Maybe it would be a waste of time.)

Re: Building more with GPT-5.1-Codex-Max

#326

Earlier quoted context omitted.

Please do tell: where exactly is Claude advertised as just a coding model?

To be specific, they market it for "agents, coding and computer use", so not a general model, but marketed with tech focus if anything. > Claude Sonnet 4.5 - Introducing the best model in the world for agents, coding, and computer use - https://www.anthropic.com/

If people are talking about CLAUDE.md then they're probably using Claude Code ... Which is for coding.

Re: Building more with GPT-5.1-Codex-Max

#327

Earlier quoted context omitted.

It would be nice if users of the codex-cli that are just using API keys as a way to handle rate limits and billing could receive these new models at the same time. I appreciate the reasoning behind delayed 'actual API' release, but I've found the rate limiting to be quite annoying, and my own API keys don't have this limitation.

Re: rate limits, I'm not sure they can, yet, on capacity. See Jensen's comment today about their cloud GPUs being sold out. So capacity increased await the ongoing data center build out.

> 30% more token-efficient at the same reasoning level across many tasks

But they're claiming it's more token efficient, so me switching my usage to the new model should _free up_ capacity.

Re: Building more with GPT-5.1-Codex-Max

#328
post #83

Earlier quoted context omitted.

I've been really impressed with codex so far. I have been working on a flight simulator hobby project for the last 6 months and finally came to the conclusion that I need to switch from floating origin, which my physics engine assumes with the coordinate system it uses, to a true ECEF coordinate system (what underpins GPS). This involved a major rewrite of the coordinate system, the physics engine, even the graphics…

I think it kind of shines in this type of task. I am building my own game engine and it's very good for this type of refactoring. On some other tasks though, it clearly makes bad architectural decisions imo, like more junior developer might not get them but for instance in my game engine, it often tries to be too generalist like trying to build something akin to Unity that can do all sorts of games rather than focus…

It’d be probably useful to include this very comment in your system prompt or a separate file which you ask the coding agent to read at the beginning of each session.

Re: Building more with GPT-5.1-Codex-Max

#329
post #150

Earlier quoted context omitted.

[flagged]

I would bet a lot of money it will not.

I don’t see how their business would succeed. So far they are burning billions of investment dollars on compute with barely any revenue. Side hustles like Sora are a disaster that costs so much money for each video and will never bring any money
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