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[Linkpost] “METR have released Time Horizons 1.1” by Sean Herrington

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This is a link post.

I just found out that METR released an updated version of their time horizons work with extra tasks and different evaluation infrastructure. This was released on 29th Jan and I think has been overshadowed by the Moltbook stuff.

Main points:

  • Similar overall trend since 2021
  • 50% time horizon doubling time went from 165 days with 1.0 to 131 days with 1.1 over the period since 2023
  • The top model, Claude 4.5 Opus, has gone from a 4h49 time horizon to 5h20

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First published:

February 3rd, 2026

Source:

https://www.lesswrong.com/posts/PoXPfSBZXHCRNJhtR/metr-have-released-time-horizons-1-1

Linkpost URL:
https://metr.org/blog/2026-1-29-time-horizon-1-1/

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Narrated by TYPE III AUDIO.

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