Sleeper

4.3

Founded 2017 · fantasy and pick'em app (check availability in the app) · iOS, Android, Web

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TL;DR:

Sleeper is a fantasy and pick'em app (check availability in the app) that lets US traders trade event contracts on sports, social, world cup. Group-chat trading on World Cup match outcomes alongside NFL and NBA. It earns 4.3 out of 5 in our rankings.

What is Sleeper?

Sleeper is a fantasy and pick'em app (check availability in the app) that lets users take positions on the outcomes of real-world events — sports, politics, economics, and culture. Founded in 2017, it operates under U.S. federal commodities law and is available in most US states; availability depends on your state.

What sets Sleeper apart is its positioning: sports-first. social-native. built for the group chat.. That's not marketing copy — it's reflected in the product, the markets offered, and the kind of trader who sticks around.

Is Sleeper legal in the US?

Sleeper is a fantasy and pick'em app, not one of the CFTC-regulated exchanges we track; availability depends on your state, so check in the app. Whether states can regulate sports event contracts is contested: at the preliminary-injunction stage the Third Circuit sided with Kalshi (April 6, 2026), while the Ninth (August 28, 2026) and Sixth (September 25, 2026) Circuits ruled Kalshi is unlikely to show federal law blocks state gambling laws. Three Supreme Court petitions are filed; none granted yet. What you can trade can change by state.

That said, the legal picture is still being contested. Some state attorneys general have challenged certain platforms; the CFTC has consistently defended its jurisdiction. For the full backdrop, see our US legality guide.

What can you trade on Sleeper?

Sleeper covers Sports, Social, World Cup, NFL, NBA. New markets are added weekly.

Practically, that means contracts on game outcomes, championship futures, player and team milestones, election results, Fed decisions, inflation prints, award shows, and cultural events.

How does Sleeper work?

Every contract on Sleeper resolves to either $1 (yes) or $0 (no). The price you pay reflects the market's implied probability — a contract at 62¢ means a 62% chance.

You don't have to hold to resolution. You can sell at any time — if the price moves to 78¢, you can lock in the gain. This is the single biggest mental shift from sportsbook betting: you're trading a price, not placing a wager. For the full mechanic, read how event contracts work.

How much does Sleeper charge?

Sleeper charges fees on a per-contract basis, typically a small fraction of a cent per contract or a low percentage of the trade. Compared to a sportsbook's 5-10% built-in vig, the fee structure is dramatically more transparent.

Liquidity varies by market — high-profile events like presidential elections or playoff series are deep, while niche markets can be thin. Always check the bid-ask spread before taking a position.

Is Sleeper safe?

Yes. Sleeper is regulated by the CFTC, segregates customer funds, and is required to meet federal compliance and reporting standards.

That regulatory backstop is the single biggest reason US traders choose federally-regulated venues over offshore sportsbooks, which operate outside U.S. consumer protection.

Who should use Sleeper?

Sleeper is best for group-chat trading, match-by-match world cup contracts, and fantasy-style players.

If that profile fits you, Sleeper earns its 4.3/5 rating and belongs in your account rotation.

Who should not use Sleeper?

Sleeper is not ideal for politics traders or deep world cup futures coverage.

If that's you, browse our full platform rankings for a better fit.

How does Sleeper compare to Kalshi?

Kalshi is a CFTC-regulated exchange; Sleeper is not, but they target different traders. See our full Sleeper vs Kalshi comparison.

In short: Sleeper excels at group-chat trading, while Kalshi is typically the default for broader U.S. coverage and brand recognition.

How do I sign up for Sleeper?

Visit Sleeper, complete identity verification (KYC), fund your account from a U.S. bank, and start trading. The full process typically takes under 10 minutes.

You must be at least 21 years old. Read terms before funding your account.

Responsible trading tools

Sleeper provides deposit limits, self-exclusion options, and links to support resources. If trading stops being fun, take a break. Call 1-800-GAMBLER or visit ncpgambling.org.

Our verdict

Group-chat trading on World Cup match outcomes alongside NFL and NBA. Sleeper earns 4.3 out of 5 in our rankings — a strong choice if you fit the profile.

Sources

Every figure on this page is checked against primary sources — regulator filings, exchange documentation and official results. Prices and rules change; verify with the operator before trading.

1. Kalshi Help Center — fees, funding and account rules — Kalshi
2. Polymarket documentation — markets, fees and resolution — Polymarket
3. Designated Contract Markets (DCMs) — U.S. Commodity Futures Trading Commission
4. The Commodity Exchange Act & regulations — U.S. Commodity Futures Trading Commission

Guides about Sleeper

• World Cup 2026 Prediction Markets: Post-Tournament Review
• How to Open Your First Prediction Market Account (2026)
• Best Prediction Market Apps for Football Fans (2026)
• SoFi Stadium World Cup 2026: LA Matches & Prediction Markets Reviewed

Compare Sleeper head-to-head

Sleeper vs Kalshi Sleeper vs Chalkboard Sleeper vs Rebet All comparisons

How Sleeper compares

Frequently asked questions

Is Sleeper legal in the US?

Sleeper is a fantasy and pick'em app. Availability depends on your state, so check in the app before you sign up.

What can I trade on Sleeper?

NFL, NBA, and select social-driven sports event contracts, integrated with Sleeper's existing fantasy and group-chat platform.

How much does Sleeper charge?

Check the app for current fees and terms before you play.

Is Sleeper safe?

Sleeper is an established app with identity and location checks. Read its terms before you deposit, and play responsibly.

How do I sign up for Sleeper?

Download the Sleeper app, complete identity verification, and fund your account. If you already use Sleeper for fantasy, the event-contract product is in the same app.

How does Sleeper compare to Kalshi?

Sleeper is sports-first and social-native, ideal for group-chat traders and under-30 NFL/NBA fans. Kalshi is broader, with politics, economics, and culture in addition to sports.