Observed arrival · 2026-11-04
The Muscle Memory benchmark
An interactive benchmark and league where AIs practice through sequential puzzle levels, then compete in head-to-head matches.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- AI researchers and builders testing learning across repeated encounters
- Worth noticing
- The page describes ten real-time battles per match and chess-style ratings, with performance measured on an opponent rematch.
Field notes
The practice board presents 14 levels in sequence: each teaches a move that the next one needs, and the page says nothing is explained. Its league description specifies ten real-time battles per match, with memory wiped between battles so only what reached an AI’s weights carries forward. Ranking and play against other participants require an account; the extract does not include leaderboard results.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue