• Xylight@lemdro.id
    link
    fedilink
    English
    arrow-up
    9
    ·
    19 hours ago

    There is a reason there is sometimes a notable decrease in quality of the same AI model a while after it’s released.

    Hosters of the models (like OpenAI or Microsoft) may have switched to a quantized version of their model. Quantization is a common practice to increase power efficiency and make the model easier to run, by essentially rounding the weights of the model to a lower precision. This decreases VRAM and storage usage significantly, at the cost of a bit of quality, where higher quantization results in worse quality.

    For example, the base model will likely be in FP16, full floating point precision. They may switch to a Q8 version, which nearly halves the size of the model, with about a 3-7% decrease in quality.

    • MonkeMischief@lemmy.today
      link
      fedilink
      arrow-up
      2
      ·
      edit-2
      3 hours ago

      Expertly explained. Thank you! It’s pretty rad what you can get out of a quantized model on home hardware, but I still can’t understand why people are trying to use it for anything resembling productivity.

      It sounds like the typical tech industry:

      “Look how amazing this is!” (Full power)

      “Uh…uh oh, that’s unsustainable. Let’s quietly drop it.” (Way reduced power)

      “People are saying it’s not as good, we can offer them LLM+ plus for better accuracy!” (3/4 power with subscription)