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Claude Opus 5.5

1806 points · 1134 comments · km144

  1. throwaway2027 · · focus · HN ↗
    After yesterday outage is the new Opus 5.5 load-bearing?
    1. handfuloflight · · focus · HN ↗
      It's worth stating why, and depends what seams you're pulling at this sitting.
    2. cronin101 · · focus · HN ↗
      It certainly _seams_ that way
    3. staticman2 · · focus · HN ↗
      I'm gonna be straight with you—I don't have the evidence to say whether or not it's load bearing.
    4. rich_sasha · · focus · HN ↗
      Your instinct is basically right, and the research backs it up.
      1. Retr0id · · focus · HN ↗
        Your instinct is half wrong and half right, and it's the right half that bites.
    5. aoeusnth1 · · focus · HN ↗
      You were right to call that out, and the evidence makes a stronger case than you are stating.
    6. fghorow · · focus · HN ↗
      "Danger Will Robinson!"
      1. esafak · · focus · HN ↗
        Wrong century, brother.
        1. fghorow · · focus · HN ↗
          I know. I know. I grew up in the '60s. Feel free to unfollow me (or whatever it is that one does on HN).
          1. esafak · · focus · HN ↗
            It's all in jest. I apologies for any hard feelings.
        2. outworlder · · focus · HN ↗
          Not really, the newest Lost in Space reboot is only a few years old(last season ended in 2021)
    7. ThouYS · · focus · HN ↗
      You're right to bring this up - and this is where it gets interesting
    8. danw1979 · · focus · HN ↗
      Good point — but I’ll gently push back on that. It’s not an outage, it’s a service degradation.
    9. hmokiguess · · focus · HN ↗
      You're right, this changes everything, and here's why it matters.
    10. RGS1811 · · focus · HN ↗
      This question is real.
    11. carlos-menezes · · focus · HN ↗
      One thing worth flagging here: 5.5 appears to be a load-bearing seam in the numbering system.
    12. sailfast · · focus · HN ↗
      Let me verify before I come back to you with an answer that is incorrect.
    13. lgessler · · focus · HN ↗
      I should find information about the user's concern instead of just assuming.

      The user is right. The outage is a real concern, and the issue is worse than we realized. Requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 encountered elevated error rates. Worth stating plainly: these are not just models — they are load bearing rungs on the software development tooling ladder, and a blocker on this level makes the outage really bite.

      One decision that is yours to make, not mine: should an email be drafted to Anthropic support? This issue has teeth, and a canonical handoff can land us where the main gate is no longer breaking silently.

      1. jaapz · · focus · HN ↗
        This made me shiver
        1. lgessler · · focus · HN ↗
          I'm gonna miss Opus 5. Every model has had its quirks ("You're absolutely right!"), but Opus 5 was serving up chicken fried tokens like none other. I hope its weights will be preserved in case we ever need a bite of the old recipe sometime after all the humans are gone.
          1. aenis · · focus · HN ↗
            Agree. I spent so much time with it that it infected my own command of English. I hope something new comes and bears the load.
    14. loopmonster · · focus · HN ↗
      That's the sharpest point anyone has made in this thread so far, and it reframes the entire conversation.
    15. bibimsz · · focus · HN ↗
      One pushback: there is no Opus 5.5. You might have meant Opus 5.1, the latest Opus model available.
    16. tda · · focus · HN ↗

      [dead]

    17. Retr0id · · focus · HN ↗
      Your premise is half right, and the half that's right is better than you think.
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