What is Context Windows, exactly?

Context Windows is an infrequently-updated Substack. It tries to give an impartial (but not unemotional) view of AI topics in the context of their histories and possible futures.

Disclosures

(Last updated on 27 February 2026)

The vast majority of my income comes from my salary at METR. My current policy is to divest from (and remain divested from) companies that my employer might plausibly evaluate or advise. I do have indirect exposure to technology companies through broad-based index funds and through <$25,000 worth of ASML stock. The only other notable non-salary compensation I have received over the last 4 years are small payments from the Horizon Institute for Public Service, IAPS, and METR for work trials, from BERI for reviewing MATS applications, and from the Forecasting Research Institute for participation in LEAP surveys.

Why subscribe?

Right now, the only benefit to subscribing is that you automatically hear about new stuff. But also, having subscribers is a great motivator for regularly putting out high-quality posts!

Stay up-to-date

Never miss an update—every new post is sent directly to your email inbox. For a spam-free, ad-free reading experience, plus audio and community features, get the Substack app.

Join the crew

Be part of a community of people who share your interests. Participate in the comments section, or support this work with a subscription.

To learn more about the tech platform that powers this publication, visit Substack.com.