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Culture War Roundup for the week of September 14, 2026

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How does Qwen 3.8 Flash perform? What kind of K/V cache are we talking about here, on consumer hardware?

I'm an AI fan but I have issues with even the biggest and strongest models for my usecases, which ironically enough is AI development (non-cheating AI in a strategy game, that is). They get there, we are making progress - but with no small amount of fumbling along the way. Testing various ideas and strategies takes time. Qwen 3.8 Flash is below Qwen 3.8 Max, which itself is below Kimi K3, right? And that's below Astra and Fable. And my usecase is nowhere near ASI development.

I agree that AI will improve in cost-efficiency but consumer hardware seems like a stretch.

Anything fast or nimble is going to roar and bellow from datacentre-grade compute if it can whisper on consumer hardware.

I can run Qwen-3.8-Flash (120B) at Q4, K/V cache, on an nVidia 3090 and a Core i5-14400 (albeit with a lot of now-expensive RAM), with simple llama.cpp run, around 5-2 t/s at 100k available 16-bit kv cache. Dropping the kv cache to 50k nearly doubles performance. Qwen-3.8 in general defaults to a heavy thinker, so that's worse than it sounds -- a moderately complex problem can burn 30k tokens -- but it's the sort of thing you can leave crunching on a problem for a while and be happy about the answer.

(Comparisons: Qwen-3.8-27B runs about ten times the speed, and Gemma4-26B runs basically faster than I can read it.)

For intelligence and capabilities, the comparison to frontier stuff is rough. Low-parameter models just don't have some information, and with either hallucinate or just nope out, no matter how well it had to be present in the training data. Indeed there's been some efforts to trim low-value knowledge from public models to optimize them for specific use cases, with weird results.

And home users have some rough spots. Both quantization and abliteration drive perplexity and errors, and the harnesses to find and debug them live aren't well-established in the open source (or free-as-in-beer) world. It's fascinating to read a logic trace that goes into surprising depth, but it doesn't do much if the program output doesn't work. The errors are small and embarrassingly simple for a programmer familiar with common JS errors, or for other models to catch, but non-programmers would likely struggle to explain what was even going wrong.

((Also note: the game's not good or fun, even when it does 'work'. That should be expected given the lack of specificity, lack of agent harness, or even a real iterative process, but it's also something no human would do this way even as the core idea it came up with is kinda clever.))

That said, intelligence can be surprising. If you want a model that can make connections between input tokens or parse through mounds of data, you can get away with stuff much smaller and more energy-efficient than you would expect. I would not, a year ago, have expected you could get spatial reasoning worth spit in a 27B model. A real big curveball isn't the most likely thing, and I wouldn't put a ton of money on specifically Jev doing anything ridiculous, but I wouldn't bet against someone coming out with a two-fold performance or intelligence improvement for inference in this model class before the end of the year, either.