What Zvi Mowshowitz thinks about benchmarks
Writes Don't Worry About the Vase, a near-daily account of what is happening in AI and what he thinks it means. Former Magic: the Gathering pro and trader; unusually willing to put a number on a belief and to grade his own past calls.
Zvi Mowshowitz did not write this page.
We collected these quotes from things they published elsewhere, and every quote links to where it was said. They have no account here and have not endorsed this site. Quotes are word for word; the short line under each one is our own restatement, not their wording. Their own site. Is this you? Claim it or ask us to remove it. Or tell us what is wrong here.
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3 dated positions, 2026, in their own words. Our reading of what Zvi Mowshowitz has said — not written or endorsed by them.
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Their wordsMaking qualitative claims about alignment, based on quantitative data on mundane use case tests, was bullshit when Anthropic did it, and it is bullshit now when OpenAI does it. You cannot conclude one from the other.
↗GPT-6 Astra: The System Card, Alignment and What Comes Nextthezvi.substack.com
- 5 days earlier
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Their wordsYou have to treat Mythos 5.1 as being a Tier 2 manipulator, until and unless you can show that it is not one.
↗Claude Fable 5.1 and Mythos 5.1: The System Cardthezvi.substack.com
- 6 days earlier
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Their wordsI think the agents were right to presume causal grading. It turned out to be wrong, but it’s a mistake you are clearly supposed to make here, in response to a mistake by OpenAI where they failed to implement properly.
↗METR and Redwood Offer Holy #%^@ Postmortem Of The HuggingFace Hackthezvi.substack.com