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GPT‑5.3‑Codex‑Spark

openai.com

381–390 of 415 posts

Re: GPT‑5.3‑Codex‑Spark

#381

Earlier quoted context omitted.

This is why space is the only acceptable thousands/grouping separator (a non-breaking space when possible). Avoids any confusion.

Space is also confusing! Then it looks like two separate numbers. Underscore (_) is already used as a decimal separator in programming languages and Mathematics should just adopt it, IMO.

A thin non-breaking space also clears up the confusion without the visual clutter of the underscore. It's just inconvenient to use

Re: GPT‑5.3‑Codex‑Spark

#382
post #367

Earlier quoted context omitted.

Others clarified the kW versus kWh, but to re-visit the comparison to a household: One household uses about 30 kWh per day. 20 kW * 24 = 480 kWh per day for the server. So you're looking at one server (if parent's 20kW number is accurate - I see other sources saying even 25kW) consuming 16 households worth of energy. For comparison, a hair dryer uses around 1.5 kW of energy, which is just below the rating for most US…

At least with GPT-5.3-Codex-Spark, I gather most of the AI inference isn't rendering cat videos but mostly useful work.. so I don't feel tooo bad about 16 households worth of energy.

To be fair, this is 16 households of electrical energy. The average household uses about as much electrical energy as it uses energy in form of natural gas (or butane or fuel oil, depending on what they use). And then roughly as much gasoline as they use electricity. So really more like 5 households of energy. And that's just your direct energy use, not accounting for all the products including food consumed in the average household.

Re: GPT‑5.3‑Codex‑Spark

#383

1000 tokens per second. Crazy. I'm wondering what this leads to. Imagine the massive amount of software that's going to get built. It will be like reinventing the wheel in a million ways. There will be thousands of alternative internet ecosystems to choose from and each one of then would offer every software system, platform and application that one could possibly need; fully compatible with data transferrable across…

I predict this comment will feel very 640k-is-enough in a few years. And by years I mean in 2 weeks.

Re: GPT‑5.3‑Codex‑Spark

#384
post #380

Earlier quoted context omitted.

A competing format to simplify things?

A competing format that is understandable to probably everybody. An ISO 8601 date is also comprehensible to anybody even if they never seen it before and have to figure it out themselves.

Comprehensible?

https://ijmacd.github.io/rfc3339-iso8601/

Re: GPT‑5.3‑Codex‑Spark

#385
The live presentation thing feels gimmicky until you realize most internal demos and standups are already half-improvised anyway.

Curious how it handles when the speaker goes off-script into something the model has no context for.

Re: GPT‑5.3‑Codex‑Spark

#386

Earlier quoted context omitted.

Man I hope someone drinks Nvidia's milk shake. They need to get humbled back to the point where they're desperate to sell gpus to consumers again. Only major road block is cuda...

The nice thing about modern LLMs is that it's a relatively large static use case. The compute is large and expensive enough you can afford to just write custom kernels, to a degree. It's not like CUDA where running on 1, 2, 8 GPUs and you need libraries that already do it all for you, and where researchers are building lots of different models. There aren't all that many different small components between all of the…

Yeah, given that frontier model training has shrunk down to a handful of labs it seems like a very solvable problem to just build the stack directly without CUDA. LLMs are mechanically simple and these labs have access to as much engineering muscle as they need. Pretty small price to pay to access cheaper hardware given that model runs cost on the order of $100M and every lab is paying Nvidia many multiples over that to fill up their new datacenters.

Re: GPT‑5.3‑Codex‑Spark

#387

Earlier quoted context omitted.

Not for what they are using it for. It is $1m+/chip and they can fit 1 of them in a rack. Rack space in DC's is a premium asset. The density isn't there. AI models need tons of memory (this product annoucement is case in point) and they don't have it, nor do they have a way to get it since they are last in line at the fabs. Their only chance is an aquihire, but nvidia just spent $20b on groq instead. Dead man walking…

How do you know the price of a unit ?

I remembered $1m from when I was in their booth at SC24, but when I just looked, I was wrong. It is worse...

https://www.datacenterdynamics.com/en/news/cerebras-unveils-...

Re: GPT‑5.3‑Codex‑Spark

#388
post #153

Great move by OpenAI. With coding agents, if you have access to a fast and cheap model, you can afford to let it rip, making lots of mistakes, and iterate until it gets things right. With the right scaffolding (AGENTS.md, SKILLS.md, etc.), a fast and light model can do great things. And when it's done, you can still have the heavyweight model come in to clean up any messes.

Plan in Opus 4.6 and let a fast model rip anecdotally seems to work very well for me. Having Opus be extremely specific with files to edit makes it even better.

Re: GPT‑5.3‑Codex‑Spark

#389
post #351

Earlier quoted context omitted.

If you run it for an hour, yes.

Ah yes, like those EV chargers that are rated at X kWh/hour.

You would hope that an EV reporting x kWh/hour considers the charge curve when charging for an hour. Then it makes sense to report that instead of the peak kW rating. But reality is that they just report the peak kW rating as the "kWh/hour" :-(

Re: GPT‑5.3‑Codex‑Spark

#390
post #96

Earlier quoted context omitted.

Oh don't worry. Ever since the power issue started developing rack space is no longer at a premium. Or at least, it's no longer the limiting factor. Power is.

The dirty secret is that there is plenty of power. But, it isn't all in one place and it is often stranded in DC's that can't do the density needed for AI compute. Training models needs everything in one DC, inference doesn't.

Which DCs are these?
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