I'm a kernel engineer. Fable 5 refused all my requests, falling back to Opus 4.8. My wife is a chemist. Her experience wasn't much better.

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nullbio an hour ago | parent | next [-]

GLM 5.3 is supposedly incredible for kernel engineering. Have you tried it?

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tstrimple 10 hours ago | parent | prev [-]

I'm curious about this because I've had Fable decompile games and help me understand what's going on inside the game itself and it never complained. I'm not sure what it takes to trip the "safety" guards but digging into game code and data files doesn't seem to be a barrier at all. I've used CC to build some personal game mods a few times now. Once for a game with no modding capability explicitly exposed.

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vinnymac 7 hours ago | parent | next [-]

Oddly not much to trip it. I once ran “touch AKAMAI.md” and then had Claude run git status and it fell back to Opus as if I had just broken into the pentagon itself.

	▲	jason_s 3 hours ago \| parent [-]
		>and then had Claude run git status and it fell back to Opus as if I had just broken into the pentagon itself. Maybe it's more like you asked a lieutenant to check the weather forecast for you, and it went away and sent back a sergeant in its place.

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celrod 10 hours ago | parent | prev [-]

> A narrow set of frontier LLM development tasks, such as distributed training infrastructure, ML accelerator design, and kernel development for certain non-standard chips.

https://support.claude.com/en/articles/15363606

My work is mostly on the Nvidia b200, which apparently gets flagged as non-standard.

Opus 5 works, but sometimes I do wonder if it's surreptitiously trying to sabotage the efforts -- possibly deliberately, but more likely by something like Fable's initial launch, which did come with secretly degraded performance when detecting kernel work. Anthropic was open at the time that such a mechanism existed, but disabled it due to backlash. More likely than not, this is just paranoia on my end...