Compare

Polymarket vs ProphetX

The world's deepest all-topic prediction market against America's sports-native exchange. Different jobs, and most traders end up with both.

Polymarket US · Deposit $10 get a $25 Trading Bonus!

21+ · T&Cs apply

18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.

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Illustration: An unlabeled globe and unmarked basketball beside a window facing the Los Angeles Pacific coast.

Quick answer

Use Polymarket for politics, news and culture contracts and the smallest deposit for a welcome credit — $25 on a $10 deposit with code VENICE, 18+. Use ProphetX for sports on any device — iPhone, Android or web — with $75 in credit for a $50 qualifying trade, 21+, in 49 states plus D.C. Both are CFTC-regulated order books where you trade against other traders and can sell out before an event settles.

Polymarket US · Deposit $10 get a $25 Trading Bonus!

VENICE

Claim on Polymarket US (opens in a new tab)

18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.

Last checked October 21, 2026

 PolymarketProphetX
Welcome offerDeposit $10, get $25 — code VENICETrade $50, get $75 — code VENICE
Market focusPolitics, news, sports, crypto, cultureBuilt around sports: games, futures, player contracts
DevicesPolymarket US appiOS, Android and web
Coverage49 states + DC49 states + DC (not Nevada)
Minimum age18+18 (or the local age of majority if higher); we recommend 21+
Liquidity strengthDeepest global books on politics and newsConcentrated entirely in sports
RegulationCFTC-regulated exchange and clearing organizationCFTC Designated Contract Market and Derivatives Clearing Organization
Who sets the priceOther traders (order book)Other traders (order book)
Exit before settlementYes — sell any position anytimeYes — sell any position anytime

Best for everything else

Polymarket · $10 → $25

How to claim Polymarket promo details →

Best for sports on any device

ProphetX · Trade $50, Get $75

Claim on ProphetX (opens in a new tab)ProphetX promo details →

Also compare ProphetX vs Kalshi and Kalshi vs Polymarket.

18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.

21+ Only. New users only. Restrictions and eligibility requirements apply — ProphetX is not available in Nevada. ProphetX is a CFTC-regulated Designated Contract Market and Derivatives Clearing Organization; it is not a sportsbook. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider whether it is appropriate for you in light of your personal financial circumstances. See prophetx.co for full terms and conditions.

Frequently asked questions

Polymarket or ProphetX — which is better?
It depends on what you trade and what you trade on. Polymarket is the deepest prediction market in the world across politics, news and culture, and its US product is 18+. ProphetX is built around sports, works on iPhone, Android and web, and is 21+. Sports-first traders should start with ProphetX.
Which welcome offer is worth more?
ProphetX's is larger in dollars — $75 for a $50 qualifying trade with code VENICE, against Polymarket's $25 in credit for a $10 deposit. Polymarket's takes less to unlock; ProphetX's works on any device. Both are new-user only, so you can claim each once.
Can I use Polymarket and ProphetX together?
Yes, and it is the strongest two-account setup for a sports trader who also follows politics. Polymarket covers everything outside sports; ProphetX gives you a dedicated sports order book on whatever device you actually own.
Does ProphetX have politics markets?
ProphetX is built around sports — game contracts, futures and player markets; it has also certified election contracts with the CFTC (September 2, 2026). Check the app for other markets. For the 2026 California governor race or Fed decisions, see Polymarket or Kalshi.
Are both available in California?
Yes. Polymarket US and ProphetX both accept eligible Californians; Polymarket's minimum age is 18 and ProphetX's is 18 or the local age of majority; we recommend 21+. Both use code VENICE.