‹ BackHN Continuity

Thread

One month coding with GLM 5.3 Flash

228 points · 180 comments · ThibWeb

  1. epistasis · · focus · HN ↗
    One thing about these numbers that's absolutely shocking to me is how low the energy use is:

    > That model’s usage was well within our budget ($68, about 4kWh of energy use / 365 grams of carbon emissions).

    The energy cost is literally 1% of the total cost. For context, 4kWh of energy would drive you about 15 miles in an EV, about half of the average person's daily driving miles. It's boiling 10 gallons of water.

    With the talk of AI data centers' impact on the world, you'd think this would be 10x to 100x the amount of energy in order to get the effects they're using here.

    My takeaway: the AI data center buildout is an overbuild probably at least as large as the fiber buildout that left us with so much dark fiber. If not even bigger. The only thing that will save the economy is the inability of NVIDIA and chip fabs to produce enough chips to match the buildout planned.

    1. ThibWeb · · focus · HN ↗
      I agree but it does worry me how fast my usage is increasing. Two months ago I was using 10x less tokens and probably not much more than 5kWh on inference. This month about 30kWh on inference. If it becomes more affordable, is there going to be another jump? Not quite sure
      1. driverdan · · focus · HN ↗
        To put that in perspective my house uses an average of 1300kWh per month. Adding 30kWh per month would be an increase of 2.3% at a cost of around $4.20, not enough to notice.
        1. spiffytech · · focus · HN ↗
          Neuralwatt prices proportional to the energy used (to cover all the non-energy costs). 30 kWh is $200 of service.
          1. driverdan · · focus · HN ↗
            Sure, they have to cover their other costs and make money. I was trying to put the energy use in perspective.
        2. ThibWeb · · focus · HN ↗
          for me it’s more an environmental consideration than financial? Passivhaus Standard for houses is about 50kWh/m²/year, so 30kWh is getting close to 10% of total
        3. oblio · · focus · HN ↗
          Do you live in the US? You should know in that case that the US is already one of the most wasteful energy users on the planet, far ahead of most other developed countries, even.

          So potentially increasing energy usage even more, especially with likely token usage acceleration, is hardly reason for celebration.

          1. driverdan · · focus · HN ↗
            No one is celebrating and using LLMs isn't necessarily a waste of energy. Where I live isn't relevant, LLMs use the same amount of power regardless of where their users are. You also know nothing about how I use electricity in my home, how I monitor my overall energy use and carbon output, and how I offset it.
            1. nicoburns · · focus · HN ↗
              > You also know nothing about how I use electricity in my home

              I don't

              > Where I live isn't relevant,

              But where you live does matter. Average monthly household energy usage in the EU is 200-400 kWh. In the US it's more like 800-900kWh. So what you consider "normal energy usage" may vary considerably by where you live.

              At 200-400kWh total usage, 30kwh starts to look a lot more significant. So you should at least consider the possibility that it's not that energy usage from AI is insignificant, but that your existing energy usage is wasteful.

            2. oblio · · focus · HN ↗
              You're American and the same 2.3% of energy you use would probably represents 5-10% of what the average Japanese person uses, and likely 15-20% of what the average Indian or Ethiopian uses.

              My point isn't to attack you personally (I'd rather attack your country's disastrous energy policies) but to point out that LLMs will constitute a huge increase in our energy consumption at a time where we haven't transitioned to renewable energy and we're probably 20-30 away from it.

        4. [deleted] · · focus · HN ↗

          [deleted]

        5. 233mhz · · focus · HN ↗
          > my house uses an average of 1300kWh per month.

          And the average European house uses like 3000kwh.... per year. We're already wasting insane amount of energy, adding 2-10% more is definitely huge

Open on Hacker News to reply ↗

Unofficial Hacker News client; not affiliated with Y Combinator.