SimpleBench B
AI benchmark · Reasoning
What is SimpleBench?
Multiple-choice benchmark of simple-looking reasoning questions designed so unspecialized humans outperform current frontier models.
Tier 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.
- 35 models scored
- in curated RL directories (1 pt)
On X · well regarded, moderate buzz, from 6 posts about SimpleBench in the last month
New Claude Opus 5.5 topping SimpleBench at 88.4% drew attention, with some fans but growing remarks that it is nearly saturated past human baseline.
How we got to tier B
- Adoption: 35 models scored. Tier B.
- On X: well regarded, moderate buzz. “New Claude Opus 5.5 topping SimpleBench at 88.4% drew attention, with some fans but growing remarks that it is nearly saturated past human baseline.” No move.
- In curated RL directories: 1 point, a floor of none.
- 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.