METR Task-Completion Time Horizons 1.1 B

AI benchmark · Agentic

Publisher
Public Leaderboard
Tier
B why
Snapshot

What is METR Task-Completion Time Horizons 1.1?

METR Task-Completion Time Horizons estimates the human task-duration horizon at which AI agents have a given chance of completing long tasks, reporting p50 and p80 horizon lengths over METR-Horizon-v1.1 results.

Tier B

B

Established: 15 or more models scored, or curated RL directories rate it.

How much stands behind a tier: usage, who backs it, a confirmed line from its own site or paper, and a clear read on X. High with three of the four, medium with two, low otherwise.

  • 25 models scored
  • in curated RL directories (1 pt)
How we got to tier B
  1. Adoption: 25 models scored. Tier B.
  2. Not yet read on X.
  3. In curated RL directories: 1 point, a floor of none.
  4. Not yet confirmed by a line from its own site or paper.

A clear view on X moves a tier one step up or down; most entries don't move. How tiers work.

Not on the map yet: no line from its own site or paper places it in a domain.

Next: browse all benchmarks. Entry from the RL Research daily scrape of public sources, 2026-10-11 snapshot.