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An operationalization of opaque serial depth

Zac Boring September 10, 2026 1 min read
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Key takeaway

Currently, chain-of-thought (CoT) is a valuable tool for overseeing AI models.

Why it's on PDOOM

PDOOM selected this story as relevant to alignment & control.

From Alignment Forum

Currently, chain-of-thought (CoT) is a valuable tool for overseeing AI models. However, some architectural shifts could significantly reduce CoT monitorability. We have recently proposed that AI companies should transparently share ​​information about the degree to which their architectures may allow for latent reasoning and communication. To assist with this proposal, this document operationalizes a measure that serves as a proxy for the amount of unverbalized serial cognition a model can perfo

By ryan_greenblatt

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