PolyBet

Bet on anything.
Against anyone.

You write the bet. AI checks it can be settled. Escrow holds the funds. Once the terms of the bet have been reached the depositor who bet correctly gets paid.

“If the Knicks beat the Heat on Nov 12, I win.”
A stylized PolyBet bet slip with the agreed terms and a verified seal
  1. 1

    Write the terms

    Set the bet in USDC, the deadline, any odds and what decides the bet, in plain language. The terms must be clear. AI checks the outcome can ultimately be verified.

  2. 2

    Fund escrow

    Once the bet passes that check, the terms are locked and escrow opens. Each side deposits USDC under the agreed terms.

  3. 3

    Settle

    At the agreed date, or when a depositor claims the win, AI verifies the result against the terms in the PolyBet smart contract and determines if the bet is ready to be settled. If so, the PolyBet escrow automatically pays the winning depositor.

PolyBets on X

Propose a bet in any post. Tag @PolyBet and the terms appear in the replies.

  1. Propose

    Post your bet, or reply to someone's take with a challenge.

  2. Tag @PolyBet

    PolyBet replies with clear terms, a deadline, and the data source.

  3. Fund & settle

    Each side funds escrow from the reply. The winner is paid.

  • OpusPilled@OpusPilled · 2m

    Anthropic IPOs above 1.5 Trillion for sure no brainer.

    0xlink8@0xlink8 · 1m

    I bet you 50k it doesn't.

    OpusPilled@OpusPilled · 1m

    In @PolyBet set it up for $50,000 USDC

    PolyBet@PolyBet · 1m

    Replying to @OpusPilled and @0xlink8

    @OpusPilled challenges @0xlink8 to a $50,000 @PolyBet that Anthropic will IPO at a value greater than $1.5 trillion.

    $50,000 USDC PolyBet on if Anthropic IPO is >1.5T

    Escrow open

    Terms locked once funded:

    • ›Anthropic closes above $1.5 trillion on its IPO day.
  • Priya@priya_builds · 14m

    ETH is going above $3k before next year. Who wants to do a $10,000 PolyBet?!

    Leo@leo_onchain · 1m

    I'm in against. @PolyBet set it up.

    PolyBet@PolyBet · 1m

    Replying to @priya_builds and @leo_onchain

    $10,000 USDC PolyBet on if ETH closes above $3,000 by Dec 31

    Escrow open

    Terms locked once funded:

    • ›ETH daily close above $3,000
    • ›Resolution source is the Coinbase ETH-USD price feed; ETH must go over $3k by end of year

How PolyBet works

  1. 1

    You Write the Terms of the Bet

    You set the bet amount and define what determines the outcome. Terms must be clear, unambiguous, and verifiable using a data source you accept.

  2. 2

    Checked before money moves

    AI tests whether the outcome can actually be verified. If it can't, escrow doesn't open and nothing is deposited.

  3. 3

    Payout follows the terms

    Funds stay in escrow until the agreed date, or until a depositor who believes they've won claims the payout, which calls AI to verify the bet against the terms.

Create a bet

PolyBet@PolyBet
Private PolyBet · Escrow opened $100 funded

@MAGAmark, @web3dev believes the Democrats will win the House and the Senate and challenges you to a bet.

Do you want to bet the Democrats don't win the House and the Senate?

Bet $42.86 USDC that Democrats won't win the House and the Senate to win $100.00 USDC.

@web3dev bets $100.00 USDC that the Democrats will win the House and the Senate.

YES70%
Deposit
$100.00
To win
$42.86
Net after fee
+$38.57
NO30%

Your position

Deposit
$42.86
To win
$100.00
Net after fee
+$95.71
Total USDC deposits$142.86
PolyBet escrow fee (3%)−$4.29

Both sides deposit USDC into the PolyBet smart contract escrow. AI verifies the result against the agreed source, then the contract pays the winner the escrow balance minus the 3% fee.

Do you bet $42.86 that Democrats won't win the House and Senate?

Your total payout if Democrats don't win both the House and Senate

$138.57 USDC

Includes your $42.86 deposit back, plus $95.71 profit after the 3% fee.

Bet $42.86 USDC

  • Bets resolve when the terms are met

    Bets only settle when they are resolvable, and never before.

  • Claims checked by AI

    PolyBet checks which depositor won the bet when someone claims their winnings.

Funds in. One winner out.

Two depositors beside a blue vault with a circular vault door on the front and the PolyBet logo on its top and side.
Depositor
PolyBetescrowUSDC
Depositor
  1. Fund
  2. Lock
  3. Settle

3%PolyBet escrow feeFlat fee to facilitate the bet and pay out the winner.

Depositors fund
Escrow holds
Winner is paid

The PolyBet escrow contract automatically executes payouts according to the agreed-upon terms once the bet is resolved.

Be there at the start