Create your group
Gather your crew. Public groups are open to everyone; private ones require an invite. Your group, your rules.
Social prediction markets
Your group chat already makes predictions. Now make them count.
“I bet Jake won’t finish that 5K.” “No way Sarah fails the bar.” We make predictions every day — but nobody keeps score. Mashi turns your group’s hot takes into real markets with real accountability.
Traditional prediction markets feel disconnected
They’re built for elections and stock prices. Not for whether your roommate will actually clean the kitchen. Mashi is built for the predictions you already make.
Post a prediction
“Will @Jake finish a 5K by June?” Tag friends, set a deadline, pick an umpire. The market is live.
Settle the score
The umpire resolves the market. Winners get paid out. The leaderboard updates. No more “I told you so” without proof.
See it in action
Active markets
Will Jake actually run that 5K?
HOT73% Yes27% No
$245 volume
Does Sarah pass the bar exam?
88% Yes12% No
$510 volume
Will Marcus cook dinner this Friday?
34% Yes66% No
$120 volume
Friend activity
M
Maya bet YES on Will Jake run that 5K?
$25 · 2m ago
J
Jordan bet NO on Marcus cooking Friday?
$40 · 8m ago
A
Alex created Does Sarah pass the bar?
1h ago
S
Sam resolved YES Will it rain Saturday?
3h ago
Leaderboard
1Maya L.
+$1432Jordan P.
+$873Sam K.
$-244Alex M.
$-64Net P/L across all resolved markets
Winners Losers
Stop arguing. Start betting.
Every group chat is full of predictions. Mashi gives you a scoreboard, a leaderboard, and the receipts to prove who really knows what they’re talking about.