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Claude Opus 5.5

1806 points · 1134 comments · km144

  1. sznio · · focus · HN ↗
    I'm more excited by the Haiku 5.5 announcement buried in this post. I'm wondering if we will finally get a decently capable fast model.
    1. system2 · · focus · HN ↗
      All I care about is the token price for the API. Haiku cannot get close to GLM or Mimo.
    2. lanyard-textile · · focus · HN ↗
      Agreed. They've been so quiet about it, and retirement for Haiku 4.5 is right around the forner.
    3. ygouzerh · · focus · HN ↗
      What are you using Haiku for?
    4. booty · · focus · HN ↗
      If you're able to use the OpenAI ecosystem, Luna's price/performance is really good. Almost like "they messed up and accidentally made it too good" good.
      1. NorwegianDude · · focus · HN ↗
        OpenAI didn't mess up. The model would have been 100 % pointless and obsolete without the large price cuts it got, because of the cheap Chinese models.

        The open models are getting closer and closer, and because they're open, people are not forced to pay the silly markup that is often over 1000x the cost to serve the model.

    5. enraged_camel · · focus · HN ↗
      We use Haiku 4.5 inside our product. It continues to be absurdly capable for converting natural language to structured JSON based on a set of fairly complex business rules.
      1. anthonypasq · · focus · HN ↗
        bro why. its literally the most overpriced model in existence right now. i could name about 10 models off the top of my head that would be better and cheaper
        1. enraged_camel · · focus · HN ↗
          We tried Luna and it scored way lower in our evals. Muse also. We haven't had a chance to test others.
          1. Game_Ender · · focus · HN ↗
            How much time were you able to put into tuning your prompts? And was it worse on all fronts (cost, latency, accuracy) or just some?
    6. copperx · · focus · HN ↗
      Why are you excited about it? Deepseek is everything Haiku wishes to be and more.
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