Polymarket US adds shorter crypto windows to venue comparison
Both venues list 15-minute windows on the same four coins, and Polymarket US also lists 5-minute and hourly windows, publishing the price to beat for each one. Prices on the comparison board refresh every 15 seconds.
Polymarket US lists 5-minute crypto Up or Down windows for Bitcoin, Ether, Solana and XRP that Kalshi does not offer, according to Prediction Markets Picks. The distinction gives the two venues different coverage at the shortest interval in the comparison.
Shared coins, different time windows
Both venues list 15-minute windows on the same four coins, according to the comparison published Nov 7, 2026 · 2:00 PM ET. That provides a common interval for readers comparing their offerings.
Polymarket US also lists hourly windows alongside its 5-minute and 15-minute contracts. It publishes the price to beat for each window, making that reference available for the individual contract.
Refresh timing matters
Prices displayed on the comparison board refresh every 15 seconds, according to Prediction Markets Picks. That update cadence is separate from the duration of the contracts: a board refresh does not mark the start or end of a trading window.
What it means for prediction markets
- Availability differs by interval: The reported 5-minute windows on Bitcoin, Ether, Solana and XRP are available on Polymarket US but not Kalshi.
- The shared comparison is 15 minutes: Both venues offer that duration across all four coins.
- Reference levels and timestamps matter: Polymarket US publishes each window’s price to beat, while comparison-board prices update every 15 seconds.
Sources & attribution
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