MRCR v2 C

AI benchmark · Long Context

Tier
C why
Snapshot

What is MRCR v2?

MRCR v2 (Multi-Round Coreference Resolution version 2) is an enhanced version of the synthetic long-context reasoning task. It extends the original MRCR framework with improved evaluation criteria and additional complexity for testing models' ability to maintain attention and reasoning across extended contexts.

Tier C

C

Niche: a handful of models scored, or built by an RL vendor.

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.

  • 3 models scored
  • fewer than 5 models scored
  • in curated RL directories (2 pts)
How we got to tier C
  1. Adoption: 3 models scored; fewer than 5 models scored. Tier D.
  2. Not yet read on X.
  3. In curated RL directories: 2 points, a floor of C. Raised to C.
  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.