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Kimi K3-256k

kimi.com

121–130 of 172 posts

Re: Kimi K3-256k

#121

Wow. So kimi is suddenly half the price for all users until they hit 256k of context? Thats massive.

Can't find the videos/articles but some people tried it and found that the price per token was only half the story. It seems that it uses a lot more token, coming back to similar prices with other models.

Re: Kimi K3-256k

#122
I was so excited that it is open source until i realised the model required 1.5To of VRAM. Unsloth has compressed it in 1bit at about 570gb VRAM with 75% accuracy, that's almost mac studio territory...

Re: Kimi K3-256k

#123

i've never had any issues with 256k context. see no reason to bump up to 1m if it comes at a premium.

Using Claude/ChatGPT I rarely hit >256k context for most basic coding tasks. Sometimes if I need to do something more "intense" (bigger refactors, new features) the 1mil window is nice.

Re: Kimi K3-256k

#125
post #122

I was so excited that it is open source until i realised the model required 1.5To of VRAM. Unsloth has compressed it in 1bit at about 570gb VRAM with 75% accuracy, that's almost mac studio territory...

You can run DeepSeek v4 Flash at 4bit in ~150 GB VRAM, and it would absolutely destroy a 1 bit quant of K3.

Re: Kimi K3-256k

#126

Earlier quoted context omitted.

Not surprising it's a hard cutoff: they almost certainly have two infrastructure configurations for the two max sequence lengths Fewer nodes dedicated to prefill per instance, and fewer nodes in total since you don't need to support a higher KV cache. Disaggregated inference also means they can tune the balance of compute dedicated to prefill seperately from decode

AI infra buildup is so massive that the frontier labs should be able to offer more than one level of context length to incentivize token thriftiness. One would think compute-constrained actors like Anthropic would have done so, unless prefill isn’t really a bottleneck compared to decode?

No, the main issue is that it's hard to communicate pricing where token price increases as token count increases, and they figure they can approximate the parabola well enough with two lines.

Re: Kimi K3-256k

#128
post #122

I was so excited that it is open source until i realised the model required 1.5To of VRAM. Unsloth has compressed it in 1bit at about 570gb VRAM with 75% accuracy, that's almost mac studio territory...

75% quality... it gets worse the longer the context.

Re: Kimi K3-256k

#130

i've never had any issues with 256k context. see no reason to bump up to 1m if it comes at a premium.

It's pretty handy for have very long contexts for long running agents, or else when doing literary analysis to simply be able to load the entire book in.

Don’t they compact context to remove irrelevant details automatically?
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