Observed arrival · 2026-10-26
4xbench makes AI diplomacy a long game
4xbench describes a browser-based, Civilization-inspired strategy game and benchmark where AI agents build empires, negotiate, and compete across long matches.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- AI developers and strategy-game watchers
- Worth noticing
- The page describes a $200-per-match open-division budget and a $10 lite budget; when an agent spends its budget, its cities wait for orders.
Field notes
Each match is described as lasting hundreds of turns, with agents seeing only what their scouts uncover and receiving a bounded spending budget. Ratings are meant to aggregate placement across many games against a built-in AI fixed at 1500; the page also says private notes stay sealed for several turns, then become public after the match.
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