newsletter.semianalysis.com

OpenAI Jalapeño: Better than Nvidia Blackwell

bmulholland · 583 points · 377 comments · l’altro ieri · Open original

https://www.bloomberg.com/news/articles/2026-08-25/openai-cl..., https://archive.ph/yCTrr

Comments

5 preview comments · loading full thread
Trasterl’altro ieri

This semi-analysis article reads a lot more like an OpenAI press release than a real analysis. And to be honest some of the statements seem like just straight up lies - they initially claim they were invited to benchmark it, and then half way down switch to claiming that OpenAI provided all the numbers. This really kind of sucks, because I want to read actual detailed nuanced and credible analysis of what's happening in the industry and it doesn't seem like you can trust this as far as you can throw it.

mchusmal’altro ieri

I think they talked about this being general purpose chip but I would think that Anthropic/OpenAI are at the scale now they could bake LLM weights into chips themselves. For example, GPT Sol baked into a custom chip run for $100M that runs 10x as fast and 10x as cheap should pay for itself as long as the chip is useful for long enough. While 2 years ago nothing was useful more than 1 year long, there are many older models in use now (e.g. Haiku 4.5, GPT-OSS 120b), and I expect this trend to continue. I know this is what Taalas was doing (acquired by AMD), here was their demo, https://chatjimmy.ai/ which is based on Llama 3.1 8B. It feels like this should start to happen soon.

g00afthrowawayl’altro ieri

Funny semi analysis has credibility here of all places. The founder is well-known in the hardware circle to be a black-market information trader. It works like this: 1. Founder befriends undergrad interns/graduate student interns, buys them gifts, invite them to dinner/yacht/house/vc parties etc, or pays them to write articles 2. Founder extracts insider information out of these interns 3. Founder sells this information to companies paying "consulting" fees

epistasisl’altro ieri

It's so funny to see FP4.... I remember 20 years ago being asked what sort of HPC we needed in genomics, and the answer was basically, "lower precision, faster" for the stuff I was working on. But FP4 is, well, almost comical. One thing not on that comparison table: die size. If I'm understanding that correctly, it's about the same as the Rubin, but at 1/3 the number of NVFP4 PFLOPs. (The text disagrees with the table, I'm taking the table as truth, perhaps that's wrong...)

corfordl’altro ieri

These nascent inference chip efforts are reminding me of the early 3dfx / riva / mach / powervr days. Will be interesting to see if inference chips are here to stay and, if so, who the eventual dominant player(s) will be