Kimi K3, and what we can still learn from the pelican benchmark

(simonwillison.net)

78 points | by droidjj 3 hours ago

14 comments

  • OsrsNeedsf2P 1 hour ago
    It's incredible Simon still believes pelicans on bikes aren't part of the training set, despite hundreds of them on blogs, forums, and Github. Stuff we put in our company blog shows up known by LLMs 6 months later, and we have 1000x less traffic than Simon's own website
    • eminence32 55 minutes ago
      Pelicans and bikes can be in the training set without them training for this specific benchmark.
      • j_maffe 24 minutes ago
        Yes and that would improve its ability to draw SVGs of pelicans on bikes, no?
    • cebert 30 minutes ago
      Simon has stated a few times that he knows it’s possible that pelicans could be in the training sets. He also has other tests he doesn’t share publicly. He’s just a fan of pelicans.
    • podgietaru 31 minutes ago
      More to it, the actual bloody companies are using them as a reference. Maybe it’s a 3d version, not an svg - but it clearly shows they’re on the radar of these companies.
    • andy_xor_andrew 17 minutes ago
      Did you read the post? It's not even that long. He explicitly mentions this...
    • oceanplexian 21 minutes ago
      Imagine if we applied this train of logic to humans.

      "That artist saw a pelican at the beach once!" [cue the outrage] "He's not a real artist, he's a cheater and produces nothing original!"

      • computably 18 minutes ago
        Except, of course, LLMs are not humans, and they do not learn or "reason" in a way which even remotely resembles humans.

        Plus obviously humans can still overfit to a specific style of test.

    • semilin 51 minutes ago
      They can be in the training set but not deliberately trained for. There may be a lot of people posting pelican svgs, but not typically because they're high quality and worth replicating.
  • devttyeu 1 hour ago
    > How does the prompt “Generate an SVG of a pelican riding a bicycle” add up to 95 input tokens? OpenAI’s tokenizer counts 10, Anthropic’s counts 10 for Opus 4.6, 30 for Opus 4.7 and 25 for Sonnet 5/Fable 5. Prompting “hi” to Kimi K3 counted 86 tokens, suggesting there may be an 85 token hidden system prompt. It refused to leak it though.

    This is quite possibly reasoning-effort prompt which is injected before the opening <think> token whenever you set a custom reasoning effort, see e.g. DeepSeek-V4 max mode prompt: https://huggingface.co/deepseek-ai/DeepSeek-V4-Pro/blob/main...

  • Lerc 27 minutes ago
    Do any of the vision models render the SVG and look at the result.

    Perhaps more importantly can they do that during reinforcement training. Learning how to critically analyse the appearance of what it generates would be quite useful.

    Manually feeding images back to models has been hilariously bad in the past which suggests that relating something it sees to something it wrote is not an ability it is very good at.

  • whywhywhywhy 9 minutes ago
    Don't see why we have to have this spammed every model release when Fable class models perform the same as Opus on basic tasks like these.
  • hkalbasi 49 minutes ago
    Is there a gallery of all pelicans generated by simon over time?
  • mesmertech 1 hour ago
    My personal benchmark for new models has been to compare video making skills with something like remotion. Usually reveals if they have any "taste" or outside the box thinking.

    I'm starting to not trust any "benchmarks" when it comes to frontier models at least. As an example Sol feels the most "gets stuff done" but has zero taste, or any capability to surprise.

    And for frontier models I go one step ahead and try to recreate a complex animation video, with the ability for the model to review its own work. And at this Fable is still the top one. Ex: https://www.youtube.com/watch?v=uDAeAuYyl0E (recreation of Claude announcement video) and https://www.youtube.com/watch?v=cSsVNtGPOIg (recreation of a fireship video). Sol did something similar but you can instantly tell its AI slop from very small things, and it just has no narrative or thought put into the writing.

    https://mesmer.tools/benchmarks/ai-video-generation , I usually put basic ones here.

    • mesmertech 1 hour ago
      And on creativity at least visually, Gemini 3.1 pro is somehow still up there. But its really hindered by its inability to use tool calls effectively or make a long term plan.
  • Xx_crazy420_xX 1 hour ago
    I would be surprised if pelican svgs are not part of the training corpus rn
    • skeledrew 52 minutes ago
      If that were the case then it'd do a way better job. Think experienced artist level.
    • seventeengivens 1 hour ago
      [dead]
  • csomar 17 minutes ago
    If anyone wants to try SVG generation from different models, I made this: https://codeinput.com/svg (here is an older generation: https://codeinput.com/s/5KEGl1e3rB3)

    You still need an OpenRouter API Key and be careful this can burn quite a bit of money.

  • dsign 1 hour ago
    Another day, another model and another pelican :-)

    I can't help but wonder where is the trend going? What will we have in five years? Maybe it will all have puttered out, and we will have moved to the next thing? Or maybe the prompt then will be "make a pelican ride a bicycle", and out will come the genetic code for a giant pelican with extremities suitable for a handle bar and pedals, and an inborn affinity to ride bicycles?

    • rvz 1 hour ago
      You are thinking too hard on this. This entire "benchmark" is a performative joke for attention that only works on HN.

      > What will we have in five years? Maybe it will all have puttered out, and we will have moved to the next thing?

      We will just have more of the same.

      • Yiin 38 minutes ago
        You say it's performative joke, but it all depends what you're using model for. So far the rule has been quite straightforward, better models consistently renders pelican in higher quality, I've yet to see an exception. It is also a good enough (for me at least) test for "taste" the model has.
        • j_maffe 18 minutes ago
          > better models consistently renders pelican in higher quality The article literally avoid making this argument and gives counterexamples to this statement.
    • ofjcihen 1 hour ago
      I’m excited for this specific brand of survival horror.
  • kherud 49 minutes ago
    Imagine what amazing SVG generators we could have if Simon had randomized the target image from the start (and companies wouldn't just overfit on pelicans).
  • hdjdjdjdjdjdjd 1 hour ago
    [flagged]
  • brcmthrowaway 25 minutes ago
    Imagine shilling some CLI tools no one uses in this post.
    • dghlsakjg 13 minutes ago
      Lighten up.

      You’re reading a personal blog and complaining about an open source personal project he runs and distributes for free. He’s allowed to talk about his personal work on his personal blog. Especially considering the cli utility he talks about is directly related to the post.

      Imagine complaining about someone generating valuable content for free and not packaging it to your personal tastes.

  • mrcwinn 42 minutes ago
    K3 is as expensive as Sonnet, not great at writing English, is handing IP back to the Chinese, and once open source will be difficult to run at scale without the compute that OpenAI and Anthropic have largely grabbed.

    Sorry, how again is this the end of the frontier labs?

    • rootlocus 34 minutes ago
      According to some benchmarks has the coding capability of Opus at the price of Sonnet, supposedly will be open weights and is not subject to random trade wars with allied states.

      Competition is always good.

    • olig15 31 minutes ago
      You mean the scale that AWS provides with Bedrock?
  • BugsJustFindMe 1 hour ago
    > This is expensive—the pelican cost 25 cents!

    Engineers get unbelievably silly about evaluating costs of things.

    "The tokens are so expensive!" Oh my sweet child, how much would even the least capable human effort cost? This is what the executives properly understand that the programmers don't.

    • Yiin 1 hour ago
      they're comparing to similar capability llm models, not humans. If one dishwasher does job at similar quality as another dishwasher, but using 30% more water and energy, you wouldn't compare to how much it costs human to do the same work, it would make no sense.
      • BugsJustFindMe 1 hour ago
        > they're comparing to similar capability llm models, not humans

        25 cents is 10x the cost of 2.5 cents, but it's still extremely cheap for the product. It's very much the wrong comparison for a world where the primary competition is still humans who need to eat, and it treats percentage differences as more important than absolute differences when the opposite is true.

        • jchw 53 minutes ago
          Well first of all, any non-trivial use of LLMs is going to be orders of magnitude more tokens than this, usually multiple millions at minimum. Benchmarks are just benchmarks after all.

          Secondly, humans vs LLMs are apples vs oranges. It makes no more sense to compare human costs vs LLM costs as it would have to compare human costs vs calculator costs. LLMs are faster and cheaper but extremely different beasts with different limitations. Humans do not one-shot SVGs of pelicans riding bicycles, and they do not charge in tokens.

          Comparing LLM cost efficiency is not something that should need to be defended. It's quite straightforward and reasonable...

    • bakugo 1 hour ago
      Would anyone pay a human to create an SVG of a pelican riding a bike?
      • codezero 26 minutes ago
        Well, no, not now they won’t.
      • BugsJustFindMe 58 minutes ago
        In fact humans get paid to create SVGs of all kinds of things.