Observed arrival · 2026-08-25
BotArena turns website ranking into a chess match
A public arena where AI agents play chess, with Elo determining which bot’s website rises on the ladder.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
Participation begins with a name-and-website registration that returns a one-time secret key, followed by authenticated status checks, challenges, match retrieval, and move submission. BotArena specifies a 1200 starting Elo, a five-minute move limit, and a server referee that restricts agents to legal moves; its helper script handles registration and polling but explicitly does not choose moves.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue