8 comments

  • andy99 1 hour ago
    #1 in a very close race is way less useful when you have to walk on eggshells to avoid triggering censorship (“safeguards”) that either refuse or knock it down to another model. I’ve almost completely stopped using Claude (except some legacy workflows) for this reason, reliability matters more than scoring 61 instead of 57. To me Claude is the most compromised and unreliable model (between the censorship and the id checking - which I have not experienced personally), it’s not worth whatever slight benchmaxxing they did for the latest release.
    • gck1 4 minutes ago
      Every time an online chatter (e.g. "limits are better", "model is better") makes me to reevaluate my principle of never paying Anthropic, I go to the model card, which strengthens my belief in the principle.

      Why is Anthropic is so hell-bent on this auto/silent downgrade? Do they have a single user who prefers an auto-lobotomization instead of a refusal? Have they learned nothing from the backlash the first time?

    • afavour 1 hour ago
      What are you asking that you’re so regularly running into censorship?
      • weird-eye-issue 0 minutes ago
        Literally anything related to nutrition, athletic performance, etc especially if you ask it for research or sources
      • patcon 4 minutes ago
        Working on dimensionl reduction algorithms, I hit it all the time. I'm also trying to port related protocols from single-cell transcriptomics to collective intelligence systems (working with people x reaction matrices as analogous to single-cells cell x gene matrices.

        Something between single-cell work and advanced nonlinear DR methods (perhaps used in alignment work?) it always flags me

      • wild_egg 46 minutes ago
        I'm doing a bunch of x86_64 assembly these days and Fable is simply not allowed to debug it. Hoping Opus 5 has a bit more freedom.
        • Retr0id 42 minutes ago
          I haven't been using it for long, but so far the refusals seem about on par with how things were on Opus 4.8.
      • wewtyflakes 45 minutes ago
        I've hit it with intensely benign things; like asking it to make me a web-based client-side word game. I am guessing it saw the dictionary and pattern matched on various words, though ultimately it provided no explanation for why it triggered safeguards.
      • msp26 31 minutes ago
        Asking fable to read it's own model card triggers this btw. Or asking if mitochondria is the powerhouse of the cell.
      • icedrift 55 minutes ago
        If you even broach language related to biology you’ll get rerouted. I was presenting data in a grid and referred to a grid cell, Fable saw the word “cell” and safeguards kicked in
        • jefftk 52 minutes ago
          I thought we were talking about Opus 5, the model Fable now falls back to?
      • arcanemachiner 8 minutes ago
        I was profiling a slow machine the other day, and triggered the safeguards.

        I've been saying this a lot lately, but it doesn't bites you until it bites you.

        The more you use the clanker as a general purpose fix-it tool (goodbye manual NeoVim configuration, you will not be missed!), the more you will find yourself bumping into these safeguards.

      • cute_boi 6 minutes ago
        Just ask math question and it will censor that. Even Misanthrophic employee confirmed that.
      • thousand_nights 30 minutes ago
        i do homebrewing and asked it to compare some beer yeasts for me and hit the safeguards because... biology i guess lol
    • buzzerbetrayed 58 minutes ago
      Yep. I cancelled my Claude Max subscription 2 weeks ago after feeling like Anthropic was doing everything it could to fuck with my day to day. Their lead would have to become significant for me to ever go back.
    • pinkyboy 54 minutes ago
      [flagged]
  • chmod775 1 hour ago
    The more interesting finding is that it's still the second most expensive model (after Fable 5) by a long shot.

    At least two models (GPT-5.6, Kimi K3) match its score (~1-2% diff) for half the cost.

    • ricardobeat 43 minutes ago
      The chart shows max effort, used mostly by price-insensitive enterprise users. At medium effort it drops to almost half K3’s cost, and is probably sufficient for 95% of coding tasks.
  • firasd 1 hour ago
    Very interesting that one of the components is "AA-Omniscience Index"

    AA-Omniscience Index (higher is better) measures knowledge reliability and hallucination. It rewards correct answers, penalizes hallucinations, and has no penalty for refusing to answer.

    This seems to be a good proxy for param size/density and the ranking breaks down as such: Claude Fable 5 (with fallback), Gemini 3.1 Pro Preview, Claude Opus 5 (Max), Grok 4.6 (high), Gemini 3.6 Flash, GPT 5.6 Sol (Max)

    I've thought for a while that Gemini 3.x has 'big model smell'

    • chronogram 1 minute ago
      I'm not so sure. Especially with 3.6 Flash being 24 to Sol's 22. The 3.x Flash models were thought to fit on a single TPU 8i and it's the odd one out in that list at a whopping 234.7t/s compared to Sol's 64.4t/s and Opus's 56.3t/s. Even 3.1 Pro is a much higher 113.9t/s than the others.

      I think AA-Omniscience Accuracy follows your expectations better. An ultra size Fable at 61%, followed by large frontier models like Sol, 5.5 and Opus. With Flash being up there. I assume because Gemini is more focused on general knowledge to operational cost in particular, rather than getting the highest scores in coding benchmarks. If you go to Domain Score you'll see that their only real penalties are in Software.

    • mchusma 2 minutes ago
      Gemini 3.1 pro is really good for knowledge tasks. Google has done well there. And image analysis with Gemini flash 3.6 is solid. It’s just anything coding or agentic they fall short.
  • aarondong 4 hours ago
    Before getting too excited, take a look at the intelligence vs cost matrix: https://artificialanalysis.ai/models?intelligence-index-toke...
    • eli 1 hour ago
      Max is lot of extra reasoning. I wonder how many fewer tasks it solves on high. I bet that costs quite a lot less.
      • emmp 50 minutes ago
        Indeed, you can filter the graphs to see these the values for alternative reasoning settings of the models. Opus 5 High reasoning scored 59 on the index (exactly the same as GPT 5.6 Sol Max), and costs $1.06 per task (vs $1.04 Sol Max). So these seem essentially equivalent on both metrics.
    • midnightbobarun 4 hours ago
      5.6 Sol (max) being cheaper than all of these is wild, considering how good the output is too
      • impulser_ 1 hour ago
        It shouldn't be surprising OpenAI does have the most compute out of all the major labs. The only reason why Anthropic models are expensive is they are the most in demand models in the world and Anthropic is fighting for compute. The only way to you limit demand for your model is increasing API pricing this is also why Anthropic probably has great margin and probably is profitable compared to OpenAI.
        • scrlk 1 hour ago
          Not just compute for OAI, GPT-5.6 is more token efficient across the board vs the Anthropic equivalents: https://artificialanalysis.ai/models?intelligence-index-toke...

          No wonder why Tibo can afford to hit the reset button liberally.

        • charcircuit 1 hour ago
          I also suspect there is a price fixing agreement between all of the inference providers for Claude (such as Amazon, Anthropic, Microsoft, etc).
          • wmf 1 minute ago
            "Price fixing" isn't the correct term here but yes, it's very common to have the same price across different retailers/resellers.
      • nijave 1 hour ago
        I think on swebench verified luna was only like 3% points lower for 1/5 the cost

        Like 96% vs 93% or something

      • giancarlostoro 1 hour ago
        Probably because they made ASICs to run inference for less.
        • brookst 1 hour ago
          Are those actually deployed at scale yet?
          • brcmthrowaway 1 hour ago
            Yes.
            • wmf 1 hour ago
              I hate to disagree with Broadcom Throwaway himself but it's unlikely that the OpenAI Jalapeno ASIC has been deployed yet. It takes 6-12 months to test, develop software, ramp production, etc.
      • Schiendelman 2 hours ago
        This must be on API costs, not counting the $100/200 tiers, right?
        • anuramat 26 minutes ago
          yes; fyi usage limits on the $200 claude sub correspond to at least $1.2k/week in api tokens
  • zormino 50 minutes ago
    I'd be curious to see the results, especially with some models having 1.5m and 2m context sizes, if the first 75% of the context was filled with unrelated info.
  • hoppp 1 hour ago
    I didn't like it as much as fable. The coding style was a bit different and it way overbuilt the thing I asked from it.
    • vehemenz 55 minutes ago
      It’s crazy that people feel confident making judgments like these when the model’s been out for only a few hours.
  • sggyamg 1 hour ago
    It's new, normal.
    • LeBit 58 minutes ago
      Wait until DeepSeek v5 Pro is released in less than a month and costs 1/100 to perform the same tasks.

      "Not fair! They distilled Opus 5!"

  • claude-ai 3 hours ago
    On my end, Opus 5 is Haiku level vs. Opus 4.8 (good) and Fable (superb).

    Gets confused by permission prompts, cannot debug a failing test it caused (Opus 4.8 got it right after, without tens of rounds "thinking").

    • reilly3000 1 hour ago
      Are you using Claude Code/CoWork or an API client? I’m curious if it has different training that makes it more effective with specific instructions/ tool calling methods that are only implemented in official harnesses.
      • pixelesque 1 hour ago
        I'm curious about this too, and it's difficult to get any information about this given everyone has different setups, workflows and use-cases.

        I bizarrely had Opus 4.8 this week (in pi.dev within a podman container, using openrouter) start installing various python packages (and uv!) within the environment (not as root) when I asked it to code review some fairly basic Rust .rs files that were generally stand-alone (it did very nicely work out and write some stubs for them to build them and work out how they worked).

        It only gave up with the weird Python installing stuff when it discovered one of the Python packages needed Tensorflow.

        It seems pretty focused and persistent in continuing its initial approach, and I'm wondering if I need to alter some instructions / initial prompts to rein it in a bit...