Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

GPT-4.5

openai.com

Post reply on HN
Print view View original

171–180 of 1001 posts

Re: GPT-4.5

#171

Post by wavemode »

zaptrem wrote: post #26

GPT 4.5 pricing is insane: Price Input: $75.00 / 1M tokens Cached input: $37.50 / 1M tokens Output: $150.00 / 1M tokens GPT 4o pricing for comparison: Price Input: $2.50 / 1M tokens Cached input: $1.25 / 1M tokens Output: $10.00 / 1M tokens It sounds like it's so expensive and the difference in usefulness is so lacking(?) they're not even gonna keep serving it in the API for long: > GPT‑4.5 is a very large and comput…

This has been my suspicion for a long time - OpenAI have indeed been working on "GPT5", but training and running it is proving so expensive (and its actual reasoning abilities only marginally stronger than GPT4) that there's just no market for it.

It points to an overall plateau being reached in the performance of the transformer architecture.

Re: GPT-4.5

#172

Post by j_maffe »

alwa wrote: post #118
MattSayar wrote: post #46

Earlier quoted context omitted.

Input price difference: 4.5 is 30x more Output price difference:4.5 is 15x more In their model evaluation scores in the appendix, 4.5 is, on average, 26% better. I don't understand the value here.

If you ran the same query set 30x or 15x on the cheaper model (and compensated for all the extra tokens the reasoning model uses), would you be able to realize the same 26% quality gain in a machine-adjudicatible kind of way?

with a reasoning model you'd get better than both.

Re: GPT-4.5

#173

Post by whiplash451 »

ur-whale wrote: post #79
zaptrem wrote: post #26

GPT 4.5 pricing is insane: Price Input: $75.00 / 1M tokens Cached input: $37.50 / 1M tokens Output: $150.00 / 1M tokens GPT 4o pricing for comparison: Price Input: $2.50 / 1M tokens Cached input: $1.25 / 1M tokens Output: $10.00 / 1M tokens It sounds like it's so expensive and the difference in usefulness is so lacking(?) they're not even gonna keep serving it in the API for long: > GPT‑4.5 is a very large and comput…

AI as it stands in 2025 is an amazing technology, but it is not a product at all . As a result, OpenAI simply does not have a business model, even if they are trying to convince the world that they do. My bet is that they're currently burning through other people's capital at an amazing rate, but that they are light-years from profitability They are also being chased by fierce competition and OpenSource which is very…

Except that if OpenAI goes bust, very little of what they did will actually be released to human kind.

So their contribution was really to fuel a race for opensource (which they contributed little to). Pretty complex of an argument.

Re: GPT-4.5

#174

Post by jasonjmcghee »

This is such as confusing release / announcement.

It seems clearly worse than Claude Sonnet 3.7, yet costs 30x as much?

What's going on with their pricing? I misread it as $7.5/M input and that that was very overpriced... then realized it was 10x that much!

Re: GPT-4.5

#176

Post by saghm »

This is probably a dumb question, but are we just gonna be stuck on always having X.5 versions of GPT forever? If there's never an X.0, it feels like it's basically meaningless.

Re: GPT-4.5

#177

Post by igor47 »

chefandy wrote: post #142
minimaxir wrote: post #48

Earlier quoted context omitted.

Sam Altman's explanation for the restriction is a bit fluffier: https://x.com/sama/status/1895203654103351462 > bad news: it is a giant, expensive model. we really wanted to launch it to plus and pro at the same time, but we've been growing a lot and are out of GPUs. we will add tens of thousands of GPUs next week and roll it out to the plus tier then. (hundreds of thousands coming soon, and i'm pretty sure y'all wil…

I’m not an expert or anything, but from my vantage point, each passing release makes Altman’s confidence look more aspirational than visionary, which is a really bad place to be with that kind of money tied up. My financial manager is pretty bullish on tech so I hope he is paying close attention to the way this market space is evolving. He’s good at his job, a nice guy, and surely wears much more expensive underwear…

You're the one buying him the underwear. Don't index funds outperform managed investing? I think especially after accounting for fees, but possibly even after accounting that 50% of money managers are below average.

Re: GPT-4.5

#178

Post by adinb »

harlanlewis wrote: post #53
zaptrem wrote: post #26

GPT 4.5 pricing is insane: Price Input: $75.00 / 1M tokens Cached input: $37.50 / 1M tokens Output: $150.00 / 1M tokens GPT 4o pricing for comparison: Price Input: $2.50 / 1M tokens Cached input: $1.25 / 1M tokens Output: $10.00 / 1M tokens It sounds like it's so expensive and the difference in usefulness is so lacking(?) they're not even gonna keep serving it in the API for long: > GPT‑4.5 is a very large and comput…

The price really is eye watering. At a glance, my first impression is this is something like Llama 3.1 405B, where the primary value may be realized in generating high quality synthetic data for training rather than direct use. I keep a little google spreadsheet with some charts to help visualize the landscape at a glance in terms of capability/price/throughput, bringing in the various index scores as they become ava…

I cannot overstate how good your shared spreadsheet is. Thanks again!

Re: GPT-4.5

#179

Post by jnd0 »

harlanlewis wrote: post #53
zaptrem wrote: post #26

GPT 4.5 pricing is insane: Price Input: $75.00 / 1M tokens Cached input: $37.50 / 1M tokens Output: $150.00 / 1M tokens GPT 4o pricing for comparison: Price Input: $2.50 / 1M tokens Cached input: $1.25 / 1M tokens Output: $10.00 / 1M tokens It sounds like it's so expensive and the difference in usefulness is so lacking(?) they're not even gonna keep serving it in the API for long: > GPT‑4.5 is a very large and comput…

The price really is eye watering. At a glance, my first impression is this is something like Llama 3.1 405B, where the primary value may be realized in generating high quality synthetic data for training rather than direct use. I keep a little google spreadsheet with some charts to help visualize the landscape at a glance in terms of capability/price/throughput, bringing in the various index scores as they become ava…

Thank you so much for sharing this!

Re: GPT-4.5

#180

Post by YetAnotherNick »

infinet wrote: post #112

Can it be self-hosted? Many institutions and organizations are hesitant to use AI because concerns of data leaking over chatbot. Open models, on the other hand, can be self-hosted. There is a deepseek arm race in other part of the world. Universities are racing to host their own deepseek. Hospitals, large businesses, local governments, even courts are deploying or showing interest in self-hosting deepseek.

Do you know of any university that host Deepseek?
Post reply on HN