Research Papers

The Bank of England is testing a kill switch it can't describe yet

The Guardrails

The Bank of England is testing a kill switch it can't describe yet

Two stories about control today: the Bank of England admits it is running out of time to get ahead of AI agents that trade on their own, and a new paper finds that the hand-written playbook you give an agent can actively make it worse. Bank of England Deputy Governor Sarah Breeden said Monday that financial regulators are running out of time to tackle the risk of autonomous AI agents causing a market meltdown — and that the central bank is exploring kill switch tests it does not yet know how…

Harvey's gross margin hit minus 50% — so it stopped renting frontier AI

The Arena

Harvey's gross margin hit minus 50% — so it stopped renting frontier AI

Two arguments about frontier AI landed the same afternoon: customers finally showing what the invoices do to a business, and a lab building a panel it says can challenge its research — just not slow it down. Harvey's gross margin fell from about 50% at the start of this year to minus 50% by June, and only turned positive again after it released Tenet, its own model built on Moonshot's Kimi K3, according to a Bloomberg report.

Bristol researchers: medicine already handles AI's black boxes

The Frontier

Bristol researchers: medicine already handles AI's black boxes

Two Bristol philosophers argue the medical AI field is optimizing the wrong thing about black boxes. Pharma ran into the same wall decades ago and built a process that works without ever explaining the mechanism. Emanuele Ratti and Lena Zuchowski, both at the University of Bristol, argue in a paper accepted by Studies in the History and Philosophy of Science that machine learning should stop treating explainability as the gate to trust and instead certify models the way medicine certifies…

Kev's open Jev alternative now trains on Qwen3.5 for about $95

The Frontier

Kev's open Jev alternative now trains on Qwen3.5 for about $95

The decision-model category Jev created a week ago now has a full open implementation, a cost figure that undercuts every "frontier model" story this month — and a benchmark table that still puts Jev on top. Jared Palmer ported Kev, his open decision-model family, onto Qwen3.5 bases and published the 0.8B, 4B and 9B checkpoints under Apache 2.0 — and the experiment log shows the whole Qwen3.5 effort cost about $95 of rented H100 time, plus three cents of Jev API calls.

Altis Labs raises $25M to make an AI scan read a trial endpoint

The Arena

Altis Labs raises $25M to make an AI scan read a trial endpoint

A cancer-trial startup wants its model's reading of a CT scan to be the number a drug is judged by — and Apple's Siri home hub is already in employees' hands. Altis Labs raised $25 million to make an AI reading of a CT scan the thing a cancer trial is measured against. The round, announced September 17 and co-led by OrbiMed and Qiming Venture Partners USA, funds a company whose product is not a drug and not a chatbot: IPRO, a model that reads routine CT scans taken during oncology trials and…