GPT-5.4 • Hacker News Board

Re: GPT-5.4

#471

Post by irishcoffee » Thu, Mar 05, 2026, 10:33 PM UTC

creamyhorror wrote: post #456

irishcoffee wrote: post #377

Earlier quoted context omitted.

> It might be my AGENTS.md requiring clearer, simpler language If you gave the exact same markdown file to me and I posted ed the exact same prompts as you, would I get the same results?

I'm not sure if the model (under its temperature/other settings) produces deterministic responses. But I do think models' style and phrasing are fairly changeable via AGENTS.md-style guidelines. 5.4's choice of terms and phrasing is very precise and unambiguous to me, whereas 5.3-Codex often uses jargon and less precise phrases that I have to ask further about or demand fuller explanations for via AGENTS.md.

So sharing markdown files is functionally useless, or no?

Re: GPT-5.4

#472

Post by conception » Thu, Mar 05, 2026, 10:34 PM UTC

xyzzy9563 wrote: post #445

Chance-Device wrote: post #13

I’m sure the military and security services will enjoy it.

Do you think the US military should have handicapped technology while China gets unrestricted LLM usage from their models?

To spy on and commit violence against American citizens? Yes.

Re: GPT-5.4

#473

Post by andrewguenther » Thu, Mar 05, 2026, 10:35 PM UTC

Philip-J-Fry wrote: post #374

I find it quite funny how this blog post has a big "Ask ChatGPT" box at the bottom. So you might think you could ask a question about the contents of the blog post, so you type the text "summarise this blog post". And it opens a new chat window with the link to the blog post followed by "summarise this blog post". Only to be told "I can't access external URLs directly, but if you can paste the relevant text or descri…

It looks like this doesn't work for users without accounts? It works when I'm logged in, but not logged out. I went ahead and reported it to the team. Thanks for letting us know!

Re: GPT-5.4

#474

Post by Smart_Medved » Thu, Mar 05, 2026, 10:36 PM UTC

[dead]

Re: GPT-5.4

#475

Post by solenoid0937 » Thu, Mar 05, 2026, 10:37 PM UTC

sampton wrote: post #416

creamyhorror wrote: post #223

I've only used 5.4 for 1 prompt (edit: 3@high now) so far (reasoning: extra high, took really long), and it was to analyse my codebase and write an evaluation on a topic. But I found its writing and analysis thoughtful, precise, and surprisingly clearly written, unlike 5.3-Codex. It feels very lucid and uses human phrasing. It might be my AGENTS.md requiring clearer, simpler language, but at least 5.4's doing a good…

That's been my experience as well switching from Opus to Codex. Reasoning takes longer but answers are precise. Claude is sloppy in comparison.

Weird, I have had the opposite experience. Codex is good at doing precisely what I tell it to do, Opus suggests well thought out plans even if it needs to push back to do it.

Re: GPT-5.4

#476

Post by [deleted] » Thu, Mar 05, 2026, 10:38 PM UTC

[deleted]

Re: GPT-5.4

#477

Post by pembrook » Thu, Mar 05, 2026, 10:40 PM UTC

creamyhorror wrote: post #223

I've only used 5.4 for 1 prompt (edit: 3@high now) so far (reasoning: extra high, took really long), and it was to analyse my codebase and write an evaluation on a topic. But I found its writing and analysis thoughtful, precise, and surprisingly clearly written, unlike 5.3-Codex. It feels very lucid and uses human phrasing. It might be my AGENTS.md requiring clearer, simpler language, but at least 5.4's doing a good…

The latest research these days is that including an AGENTS.md file only makes outcomes worse with frontier models.

Re: GPT-5.4

#478

Post by baxtr » Thu, Mar 05, 2026, 10:40 PM UTC

Philip-J-Fry wrote: post #374

I find it quite funny how this blog post has a big "Ask ChatGPT" box at the bottom. So you might think you could ask a question about the contents of the blog post, so you type the text "summarise this blog post". And it opens a new chat window with the link to the blog post followed by "summarise this blog post". Only to be told "I can't access external URLs directly, but if you can paste the relevant text or descri…

I picked up Claude today after being away and using only ChatGPT and Gemini for a while.

I was pretty impressed with how they’ve improved user experience. If I had to guess, I’d say Anthropic has better product people who put more attention to detail in these areas.

Re: GPT-5.4

#479

Post by amelius » Thu, Mar 05, 2026, 10:43 PM UTC

Philip-J-Fry wrote: post #374

I find it quite funny how this blog post has a big "Ask ChatGPT" box at the bottom. So you might think you could ask a question about the contents of the blog post, so you type the text "summarise this blog post". And it opens a new chat window with the link to the blog post followed by "summarise this blog post". Only to be told "I can't access external URLs directly, but if you can paste the relevant text or descri…

If only they had an LLM they could use as a software testing agent.

Re: GPT-5.4

#480

Post by tototrains » Thu, Mar 05, 2026, 10:45 PM UTC

prydt wrote: post #71

I no longer want to support OpenAI at all. Regardless of benchmarks or real world performance.

Their trajectory was clear the moment they signed a deal with Microsoft if not sooner.

Absolute snakes - if it's more profitable to manipulate you with outputs or steal your work, they will. Every cent and byte of data they're given will be used to support authoritarianism.