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Qwen3: Think deeper, act faster

qwenlm.github.io

131–140 of 412 posts

Re: Qwen3: Think deeper, act faster

#131
post #98

I have a small physics-based problem I pose to LLMs. It's tricky for humans as well, and all LLMs I've tried (GPT o3, Claude 3.7, Gemini 2.5 Pro) fail to answer correctly. If I ask them to explain their answer, they do get it eventually, but none get it right the first time. Qwen3 with max thinking got it even more wrong than the rest, for what it's worth.

Can you please share the problem?

Re: Qwen3: Think deeper, act faster

#132

I find the situation the big LLM players find themselves in quite ironic. Sam Altman promised (edit: under duress, from a twitter poll gone wrong) to release an open source model at the level of o3-mini to catch up to the perceived OSS supremacy of Deepseek/Qwen. Now Qwen3’s release makes a model that’s “only” equivalent to o3-mini effectively dead on arrival, both socially and economically.

I have a hard time believing that he hadn't already made up his mind to make an open source model when he posted the poll in the first place

Re: Qwen3: Think deeper, act faster

#134
post #98

I have a small physics-based problem I pose to LLMs. It's tricky for humans as well, and all LLMs I've tried (GPT o3, Claude 3.7, Gemini 2.5 Pro) fail to answer correctly. If I ask them to explain their answer, they do get it eventually, but none get it right the first time. Qwen3 with max thinking got it even more wrong than the rest, for what it's worth.

Can you please share the problem?

I don't really want it added to the training set, but eh. Here you go:

> Assume I have a 3D printer that's currently printing, and I pause the print. What expends more energy, keeping the hotend at some temperature above room temperature and heating it up the rest of the way when I want to use it, or turning it completely off and then heat it all the way when I need it? Is there an amount of time beyond which the answer varies?

All LLMs I've tried get it wrong because they assume that the hotend cools immediately when stopping the heating, but realize this when asked about it. Qwen didn't realize it, and gave the answer that 30 minutes of heating the hotend is better than turning it off and back on when needed.

Re: Qwen3: Think deeper, act faster

#135

Earlier quoted context omitted.

Can you please share the problem?

I don't really want it added to the training set, but eh. Here you go: > Assume I have a 3D printer that's currently printing, and I pause the print. What expends more energy, keeping the hotend at some temperature above room temperature and heating it up the rest of the way when I want to use it, or turning it completely off and then heat it all the way when I need it? Is there an amount of time beyond which the ans…

Some calculation around heat loss and required heat expenditure to reheat per material or something?

Re: Qwen3: Think deeper, act faster

#136

Earlier quoted context omitted.

I don't really want it added to the training set, but eh. Here you go: > Assume I have a 3D printer that's currently printing, and I pause the print. What expends more energy, keeping the hotend at some temperature above room temperature and heating it up the rest of the way when I want to use it, or turning it completely off and then heat it all the way when I need it? Is there an amount of time beyond which the ans…

Some calculation around heat loss and required heat expenditure to reheat per material or something?

Yep, except they calculate heat loss and required energy to keep heating, but room temperature and energy required to heat from that in the other case, so they wildly overestimate one side of the problem.

Re: Qwen3: Think deeper, act faster

#137
For ultra large MoEs from deepseek and llama 4, fine-tuning on these models is becoming increasingly impossible for hobbyists and local LLM users.

Small and dense models are what local people really need.

Although benchmaxxing is not good, I still find this release valuable. Thank you Qwen.

Re: Qwen3: Think deeper, act faster

#139

Earlier quoted context omitted.

How do people typically do napkin math to figure out if their machine can “handle” a model?

The ultra-simplified napkin math is 1 GB (V)RAM per 1 billion parameters, at a 4-5 bit-per-weight quantization. This usually gives most of the performance of the full size model and leaves a little bit of room for context, although not necessarily the full supported size.

Wouldn’t it be 1GB (billion bytes) per billion parameters when each parameter is 1 byte (FP8)?

Seems like 4 bit quantized models would use 1/2 the number of billions of parameters in bytes, because each parameter is half a byte, right?

Re: Qwen3: Think deeper, act faster

#140
post #98

I have a small physics-based problem I pose to LLMs. It's tricky for humans as well, and all LLMs I've tried (GPT o3, Claude 3.7, Gemini 2.5 Pro) fail to answer correctly. If I ask them to explain their answer, they do get it eventually, but none get it right the first time. Qwen3 with max thinking got it even more wrong than the rest, for what it's worth.

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