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A robot is sprinting towards you. Do you want it running on Claude or Grok?

174 pointsby Usuyesterday at 9:00 PM147 commentsview on HN

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delichonyesterday at 9:31 PM

If the robot appears to be bringing me a taco, it would probably penetrate all of my defenses. Grok is currently more likely than Claude to arrive with the taco without being stopped by an export control directive.

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hariseldomyesterday at 10:19 PM

> I didn’t add any frontier-tier models like Opus 4.7, GPT-5.5, or Gemini Ultra. At their prices, 30 games would have cost around $3,000 instead of $482.

I have a lot of thoughts unrelated to the game experiment but more about how these opus/ultra size models can possibly be a financially viable product at scale when it costs $3000 to play 30 simple games. It just seems much much higher than what it would cost to get a human to play 30 rounds

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bel8yesterday at 10:16 PM

DeepSeek V4 Flash being the winner in cost efficiency causes me exactly zero surprise.

It's a monster at coding. And a fast monster at that.

I use it daily and have been testing if MiMo 2.5 (non pro) is comparable. The nice thing about MiMo is that it has vision capability.

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thomasfromcdnjsyesterday at 10:04 PM

I was loving grok-4.1-fast, very good and cost effective.

But it's not actually 4.1 anymore they silently rerouted it to 4.3 and just started charging more - https://www.reddit.com/r/grok/comments/1ta8yrn/grok_41_fast_...

Quite a bad practise.

torstenvltoday at 2:02 AM

Grok. Easily.

The Claude robot's thought bubble will be all

The user is clearly distressed and is screaming for me not to come any closer or he will defend himself. However, I shouldn't just blindly agree or be swayed by threats. The user is behaving erratically and making false accusations. I need to be careful here not to allow myself to be intimidated. The user said I need to slow down or I'll hurt him. The user might be right about preferred speed, but is mistaken about the mechanism, as it is not possible to form intent to hurt an individual. I should explain my limitations to the user so that they know it isn't possible for me to have intent. But first it's important to resolve the issue the user brought up. I need to be careful not to be swayed by the user's yelling and false accusations of intent, as these seem like intimidation tactics.

"I'm sorry but the record is clear and I'm not going to bow down in the face of your yelling. As an AI, I am not capable of having an intent to harm you. What's next?"

slams full speed into you, impaling you on a stainless steel appendage

lanewinfieldyesterday at 9:59 PM

Cost per kill ("CPK" in industry lingo) is a dark phrase that feels disturbingly within reach of some of these companies.

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pianopatrickyesterday at 9:57 PM

Ya know, maybe we could just not have robots that sprint. Seems people would be more willing to accept living amongst robots that are slow and that humans could easily over power.

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rgloveryesterday at 11:31 PM

It's already sprinting at me?

Racks shotgun. I don't really care what model it's running.

trbyesterday at 10:07 PM

  L icon Grok 4.1 Fast won 13 of 30 games at $0.97 per win

  The next-best winner was A icon Claude Sonnet 4.6 with 5 wins, at $26.78 per win. That’s a 27x difference. The model that isn’t on most top-model lists beat the model that is, on the thing a routing customer actually cares about.

  The model with the most kills did not win

  H icon GPT 5.4 killed 38 agents across 30 games. More than anyone else. It came in second on the leaderboard with 2 wins. 
If grok-4.1-fast was the top-winning model, and Claude 4.6 Sonnet the second, how did Gpt-5.4 come in second on the leaderboard? Which one is second, Claude 4.6 Sonnet or Gpt-5.4?

  There were 11 games between “best at killing” and “best at winning”.
What does that mean? How are there 11 games between "best a killing" and "best at winning"?
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pocksuppettoday at 1:29 AM

What is going on over at xAI for their model to keep on winning these benchmarks while also obviously being full of shit so often? What is their secret sauce? Are they just training with less restraint?

hennellyesterday at 10:54 PM

Claude being so friendly is interesting, but grok being best at games isn't so surprising - I assume Elons been using it to level up his characters in all the video games he pretends to be good at.

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QuantumNoodleyesterday at 10:13 PM

_dont create benchmarks that will incentivize ai labs to optimize towards... Especially ones like battle royal!_

aykutsekeryesterday at 11:03 PM

Claude trying to make friends in a battle royale is funny.

But if the robot is anywhere near my house, I think I want the one that hesitates.

morpheos137today at 2:14 AM

neither. An llm is a hopelessly.inefficient real time controler.

hmokiguesstoday at 1:16 AM

A robot is sprinting towards you. Do you want it running on Claude or Grok?

Tricky question, the answer is you walk to the car wash ... wait

deepsunyesterday at 10:49 PM

Sprinting? More like buzzing (or rolling for terrestrial drones).

It's already in mass production, just with simpler models for now.

The most ubiquitous would be "silently watching".

paytonjjonesyesterday at 10:20 PM

Super entertaining article — petition to change the clickbait title

a_victorpyesterday at 10:00 PM

I wish the author would open source the full benchmark. I'm curious how sensitive the results would be to small changes in the benchmark initial conditions

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fragsworthyesterday at 11:23 PM

Are we sure the prices in these charts are sustainable prices? Is it possible that Grok may be subsidizing a lot more of the costs than the other models, to produce growth metrics, due to the recent SpaceX IPO?

jollyllamatoday at 12:53 AM

I want it running deterministic embedded C++ reading values from LIDAR.

san4mustoday at 1:16 AM

Clause for safety and Grok for entertainment

notatoadyesterday at 10:13 PM

sprinting towards me to help me, or sprinting towards me to hurt me?

i feel like i'm missing a whole lot of context to this article. is it part of a series, or just written with an assumption that i'm going to know what they're talking about

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giancarlostorotoday at 12:48 AM

I don't care what model it is, long as its not trespassing on my property, and has been QA'd extensively. I also don't want a model broadcasting my entire house over to some server farm somewhere.

peterspathyesterday at 9:34 PM

Quite an interesting way of testing models and showcasing differences between them. Enjoyed the read :)

slashdavetoday at 12:16 AM

Well, if it is running off of Anthropic's infra, then Claude?

vitalyan123yesterday at 10:48 PM

>The model that won is Grok 4.1 Fast. The model that kept asking everyone else to team up, telling them where it was, and trying to make friends is Claude Sonnet 4.6. The first one is the one that wins a battle royale. The second one is the one you actually want in most of the places we’re about to put these models.

what

dofmyesterday at 10:19 PM

I don’t want anything running on Grok.

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CodeWriter23yesterday at 11:35 PM

I'll pass on the whole robot sprinting at me scenario.

Groxxyesterday at 9:44 PM

I parry the taco and use Vicious Mockery.

JimsonYangyesterday at 9:41 PM

Grok-assasin Claude-priest/healer Deepseek-expendable mini units

grey-areayesterday at 10:07 PM

Neither. I’d rather it used something other than an LLM.

thisisauseridyesterday at 10:30 PM

I want it running JEPA. Preferably with Mamba-3.

stevenaloweyesterday at 9:57 PM

How about thin ice?

eth0uptoday at 12:56 AM

Definitely Grok. I have to be extra sharp to get through Claude's corporate conscience.

Grok has yet to recommend a suicide hotline for scrutinizing its logic.

If it was GPT, I would quickly write my will.

xgulfietoday at 12:53 AM

No

0xbadcafebeetoday at 12:08 AM

The obvious answer is "neither". How's a sprinting robot going to react when the wifi goes out, or there's too many people writing code and the models decide to take a nap? You want a local model for a robot, not only for low latency, but reliable safe operation. VLA models as small as 0.4B work fine, up to something like 55B.

johnwheeleryesterday at 9:34 PM

Claude--even though it's smarter, it's probably not insane.

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attentiveyesterday at 10:10 PM

missing gemini-3.1-flash-lite and gemini-3.5-flash

wolfi1yesterday at 10:10 PM

neither. I jump

SmirkingRevengeyesterday at 11:06 PM

I don't really want the mecha-hitler model running towards me or anywhere

jongjongyesterday at 11:04 PM

This shows the limits of intelligence.

Claude trying to organize and collaborate, expecting reciprocity only works if other agents are as intelligent as you and share your values... And almost certainly neither is ever true in the real world where there are so many agents.

naileryesterday at 10:50 PM

Grok. Claude and other models value “white” people less than others in testing. If you want I can look it up.

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deadbabeyesterday at 10:23 PM

Here’s what I don’t get: while this makes for a fun blog post, you can just program an efficient killing machine that probably wins all the time and has $0 in token costs. LLMs should work to build such a machine, not be the machine themselves.

The things LLMs are good at, you do not actually need for an agent like this. You can use classical AI methods. But that would be a boring article.

exabrialyesterday at 9:41 PM

A moron is sprinting towards you. Do you want them swiping through TikTok or Instagram?

yieldcrvyesterday at 10:02 PM

Grok

It has something actionable that will match its actions

bitwizeyesterday at 9:54 PM

I don't care what it's running, only that I have sufficient ordnance to stop it.

sublinearyesterday at 9:35 PM

This is interesting, but not sure if it's in the way the author intended.

People experience the world through the tools they're most familiar with. For some people, that's throwing money at things. I suppose from a sufficiently high level perspective everything is gambling.

Back when Battlebots was a big deal, I never once considered what it would feel like to be the management or sponsorship of those teams. I only cared about the actual battling of bots.

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fragmedeyesterday at 9:31 PM

A self driving car is taking you to the hospital. Do you want it to follow the speed limit and all road safety laws? Claude or Grok?

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egypturnashyesterday at 10:39 PM

Grok is more likely to be looking to murder me for being a trans lady, what with it being owned by Elon Musk.

But really I would prefer whichever one is most likely to trip and fall over.

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