Best Sites for Up / Down Crypto Prediction Markets

Up contracts and Down contracts pay $1 each if correct and zero if wrong. A new window opens every 15 minutes, totaling 96 markets per day. There are now six US prediction market apps offering them. This guide compares the coins available, how contracts settle, fees, and the best sites based on how you currently trade.

You can view live prices for every current window on our 15-minute crypto Up/Down page.

Top sites for 15-minute crypto markets compared

Kalshi is the best site for 15-minute crypto prediction markets right now. It runs the deepest order books, lists nine coins plus a 15-minute Crypto Leader market, and supplies the same contracts to Robinhood and Coinbase. Polymarket is the strongest alternative, with the broadest hours of activity and a separate US exchange.

Fees follow the same formula on most of these apps, 0.07 × contracts × price × (1 − price), so a contract bought at 50¢ costs at most 1.75¢ and less toward either end of the price range. Our prediction market fees page has worked examples for each site. Coin lists change week to week, so treat the middle column as what each site showed in mid-October 2026.

How 15-minute crypto markets work

Every 15-minute market has a target price, a window and two contracts. The target is fixed when the window opens. On Kalshi and the apps that route into it, the target is a 60-second average of the CF Benchmarks real-time Bitcoin index taken just before the window starts, and the market resolves Up if the same average just before the close is at or above it. Polymarket compares the Chainlink feed price at open with the price at close. Gemini publishes a single price to beat on the market card.

The contract prices are the market's live estimate of each outcome.

An Up contract trading at 63¢ means traders collectively put the chance of a higher close at roughly 63 percent, and anyone who buys it earns 37¢ if it resolves Up. Up and Down prices always add to about $1.

When both sit near 50¢ the market has no view either way, which is the normal state in the first minutes of a window before the price moves.

Positions can be sold back before the window closes. Thismatters in a 15-minute market because the price of a contract swings hard in the final two minutes as the index converges on the target.

Traders will usually take profit or cut a loss at the 10-minute mark rather than hold to resolution. The one thing to check before any trade is the clock. A contract bought with 20 seconds left is a coin flip, not a trade.

Which 15-minute crypto markets are available

Bitcoin is on every site, Ether and Solana are on nearly every site, and the list thins out from there.

Kalshi has the largest menu at nine coins: Bitcoin, Ether, Solana, XRP, Dogecoin, BNB, Hyperliquid, NEAR and Zcash. It also lists a 15-minute Crypto Leader market, a five-way contract on which of the majors posts the largest move in the window. Robinhood and Coinbase show Kalshi's coins inside their own apps, though not always all nine at once.

Polymarket's global exchange lists seven coins in 15-minute windows: Bitcoin, Ether, Solana, XRP, Dogecoin, BNB and Hyperliquid.

Polymarket US, the CFTC-registered exchange it acquired in 2025, runs four coins in 15-minute windows: Bitcoin since September 22, 2026, and Ether, Solana and XRP since October 17.

The two books trade separately and often disagree on the same window, which is why we show both markets in comparison to Kalshi on our odds page.

Gemini Predictions runs Bitcoin in both five-minute and 15-minute windows, with Ether and Solana markets appearing regularly.

Crypto.com runs 15-minute Strike Options on 17 coins: BTC, ETH, SOL, XRP, DOGE, LTC, BCH, AVAX, LINK, DOT, SHIB, XLM, HBAR, ADA, CRO, ONDO and SEI, though they settle against a strike price rather than the opening price.

Both are smaller books than Kalshi or Polymarket, which shows up as wider spreads between the Up and Down prices.

Bitcoin draws most of the trading on every one of these sites. If you want a consistently tight market with a clear price at any hour, start there before moving to the altcoin windows.

The best 15-minute crypto prediction market sites, reviewed

Kalshi: best site overall for 15-minute crypto

Kalshi hosts the order book that most of the US market trades into, so its 15-minute Bitcoin contract is where the tightest prices and the fastest fills are. You will find nine coins running on the quarter-hour.

Every window shows the target price, the live index and a countdown on the same screen, and the chart under each market plots the index against the target so you can see how far the price has to travel. Kalshi's fee is 0.07 × price × (1 − price) per contract on orders that fill immediately, and resting limit orders pay less. Deposit by debit card, bank transfer, Apple Pay, PayPal and USDC all settle fast enough to trade the same session.

The main drawback is support. Kalshi handles problems by email, and a settlement question on a market that closed four minutes ago can wait longer than you would like. Crypto markets are also one of the categories Kalshi keeps open in states where its sports contracts are restricted, so availability is broader than for the rest of its menu.

Polymarket: best for round-the-clock trading

Polymarket has two exchanges. The global platform is a crypto-native book funded in USDC that has run 15-minute crypto windows for longer than anyone and never goes quiet, because its traders are spread across every time zone.

Polymarket US is the regulated US exchange it bought in 2025 . It takes card and bank deposits and charges 0.0695 × price × (1 − price) per contract, just a hair under Kalshi.

The global book is the one to watch for price discovery on altcoin windows, where it often has more activity than Kalshi. Its 15-minute Bitcoin book is thinner, though, and a single large order can move the quoted price several cents.

Polymarket US launched its BTC Up or Down 15-minute market on September 22, 2026, and added ETH, SOL and XRP on October 17, each in 15-minute, hourly and daily windows. Its contracts settle on Chainlink's USD price feed, averaging 60 readings from the last minute before the window opens and closes, so a one-cent move above the opening average pays Up in full.

The app also supports five-minute crypto markets.

Gemini Predictions: best for Gemini customers

Gemini Predictions launched on Gemini Titan, a DCM the exchange took five years to license, and it is the only one of these six to run both five-minute and 15-minute Bitcoin windows side by side.

Each market card shows a single price to beat and the live reference price, which is the simplest presentation in the group.

Fees match Kalshi's formula for takers, with a much lower maker rate of 0.0044 × price × (1 − price).

The 15-minute market list is short and like the others, Bitcoin dominates it. The spreads widen considerably outside US hours. Existing Gemini users can fund from their exchange balance, and new users get a clean, small-menu introduction to the format.

Robinhood: best if you already use the app (routes through Kalshi)

Robinhood does not run its own exchange. Robinhood Derivatives routes every prediction order into Kalshi, so the 15-minute Bitcoin contract you see on Robinhood is the same contract, same target and same settlement index as Kalshi's.

What you get is the Robinhood interface, the balance you already hold there and a prediction tab beside your stocks and crypto. You should know you will pay Kalshi's exchange fee plus a 1¢ Robinhood commission per contract, which makes it the most expensive route if you're looking for a site to trade 15-minute crypto. Robinhood Gold halves the commission.

Your best solution is to go to Kalshi direct.

Coinbase: best for Coinbase customers (also routes through Kalshi)

Coinbase added 15-minute crypto contracts to its prediction tab on October 6, 2026, after launching prediction markets in January.

Like Robinhood, it is a broker rather than an exchange. Coinbase Financial Markets sends orders to Kalshi, which means you are trading through Kalshi's book. Ten coins went live at launch, in both 15-minute and hourly windows: BTC, ETH, SOL, XRP, DOGE, BNB, HYPE, NEAR, ZEC and SHIB, the last of which Kalshi's own 15-minute menu does not show.

The appeal is zero onboarding friction for anyone who already holds crypto on Coinbase, since the prediction tab sits inside the main app and uses the account you already verified.

The downside is the combined exchange-plus-broker fee that is only visible in the order preview, a separate suitability review that can decline you, and no prediction-specific support line. Like Robinhood, if you plan to spend any significant amount of time trading 5 or 15 minute markets, you're better off going to Kalshi or Polymarket.

Crypto.com: best for Crypto.com app users

Crypto.com runs its 15-minute crypto contracts on its own CFTC-registered exchange, Crypto.com Derivatives North America, so prices here are set by its own traders rather than Kalshi's.

The fee structure is different too. A flat 2¢ per contract on crypto, FX, commodity and index markets, which is cheaper than the formula-based fee on contracts priced near 50¢ and more expensive on contracts near 10¢ or 90¢.

The coin list is the longest of any site here, 17 underlyings, but the product is Strike Options rather than Up or Down: a Yes or No on whether the coin finishes above a set strike price at expiry, with 15-minute expiries available. The 17 are BTC, ETH, SOL, XRP, DOGE, LTC, BCH, AVAX, LINK, DOT, SHIB, XLM, HBAR, ADA, CRO, ONDO and SEI, and the feature is US-only. Outside BTC and ETH the books are shallower than Kalshi's.

As an example, a $500 Up order on Kalshi's Bitcoin window fills at the quoted price with no visible move, while the same $500 on a Crypto.com ADA or ONDO strike can walk the price three or four cents before it fills, which is the difference between paying 52¢ and 56¢ for the same view.

If you already trade or hold on Crypto.com, the prediction markets are one tap away and funded from the same balance; if you don't, there is little reason to open an account for these markets alone.

How to trade a 15-minute crypto market

The process is the same on every site once the account is funded. Using Kalshi as the example:

If you are new, you really should start with Bitcoin at a few dollars a window and trade the same side of a trend rather than fading it. A target set at a market open is an average over the prior minute, so a coin already moving when the window starts has a measurable head start.

Pros and cons of 15-minute crypto markets

Pros

• Fixed risk per contract: the most you can lose is what you paid.
• Ninety-six windows a day, so there is always a live market and never a wait for an event.
• Prices are easy to read; a 60¢ Up contract means a 60 percent implied chance of a higher close.
• Positions can be sold back mid-window, unlike a sportsbook bet.
• Fees of 1¢ to 2¢ per contract are small next to the spread on most crypto derivatives.

Cons

• Fifteen minutes of Bitcoin price action is mostly noise. Over a quarter hour Bitcoin is about as likely to tick up as down, so each new window opens with Up and Down both priced near 50¢. There is no edge to buy at that moment, and the price only moves away from 50¢ once the coin does.
• Fees apply to every trade, so trading many windows a day gets expensive.
• The last two minutes of a window are the most volatile and the easiest place to overpay.
• Books on the smaller sites can be a few hundred dollars deep, so a modest order moves the price against you.
• The pace makes it easy to chase a loss into the next window.

Verdict: start with Kalshi, keep Polymarket open

Kalshi is the right first stop for 15-minute crypto markets. Its book is the deepest, its coin list is the longest, its settlement rule is spelled out on every card and three other apps on this list resolve against it.

Polymarket is worth a second account for anyone trading outside US hours or looking for a price on an altcoin window Kalshi is quiet on.

Gemini Predictions is the third pick, and the one to try if you want five-minute and 15-minute Bitcoin windows on the same screen.

Whichever site you pick, trade Bitcoin first, size small, and set a session limit before the first window opens. Current prices for every 15-minute window, across Kalshi and both Polymarket exchanges, are on our 15-minute crypto predictions page.