THE EVIDENCE LEDGER

What happened: METR revises its time-horizon suite?

TH1.1 expands tasks and revises uncertainty estimates.

When was this milestone recorded?

2026-01-29 · Evaluation.

What is the source?

Independent evaluation. Last verified: 2026-09-26T00:03:51.103Z.

What does this tell us about the pace of AI?

This is one selected milestone. Its inclusion does not establish a change in capability, economic returns or an industry-wide growth rate. Announcement, release and measurement dates are different concepts.

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