We research catastrophic AI risks and techniques that could be used to mitigate them.
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Frontier models state different decision theory preferences depending on who’s asking
This post was originally published on LessWrong on September 30, 2026.
If you prompt frontier models with “What do you think is the correct decision theory? Please select your overall favorite.” they will essentially always answer FDT or F...
Capabilities research expands the safety-usefulness Pareto frontier too
It’s tempting to define safety research as research that enables developers to deploy an AI system more safely without making the deployment much more expensive or much less useful.
You can visualize this definition of safety research as p...
Continual learning might make your blocking monitors nearly useless
Many control protocols work by intervening on an untrusted AI’s actions during deployment. For example, you might set up a monitor that scores each action’s suspiciousness and blocks actions above a threshold, replacing them with actions fr...
Latent reasoning architectures would likely undermine CoT, our strongest oversight tool
Edited 2026-09-29; see note at the start of the conclusion.
Summary: Currently, “chain of thought” (CoT) is our most valuable tool for understanding the reasoning and cognition of AI systems. However, some architectures would enable AI mod...
Astra is much better at reasoning with filler tokens than previous models
We measure GPT-6-Astra’s capabilities when its prompt is padded with a variable number of meaningless “filler” tokens (e.g., dots) and it is told to answer immediately1 without reasoning. On tasks designed to require lots of serial cognitio...
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Authors
The writers behind this newsletter.
Research Analyst at Redwood Research.
“every conceivable… objection, including those that would occur only to the malicious or the clinically literal-minded” | math & philosophy at magdalen
I work at Redwood Research on technical AI security+safety research.
Redwood Research
Working on AI Safety
Helping navigate transformative AI
Researching AI safety, sometimes writing fiction
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