Messier C
AI benchmark · Long-Horizon
- Publisher
- Andromede
- Domains
- Long-Horizon
- Tier
- C why
- Snapshot
Full listing name: Messier: A High-Resolution Corpus for Cross-Benchmark Agent Evaluation - https://arxiv.org/abs/2607.25891
What is Messier?
Messier: A High-Resolution Corpus for Cross-Benchmark Agent Evaluation (arXiv:2607.25891, 2026; self-reported EMNLP 2026 Main) - https://arxiv.org/abs/2607.25891
Tier 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.
- built by Andromede
- in curated RL directories (2 pts)
How we got to tier C
- Adoption: built by Andromede. Tier C.
- Not yet read on X.
- In curated RL directories: 2 points, a floor of C.
- 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.