Kalshi vs Sleeper: 2026 Comparison for California
Open Kalshi first. Kalshi is a CFTC-regulated exchange that accepts California residents and covers sports, politics, economics, culture and weather; courts are still deciding how state law applies to its sports contracts. Sleeper is a fantasy and pick'em app, not a CFTC-regulated exchange, so check the Sleeper app for what it offers in California. Last checked October 3, 2026.
Kalshi · Trade $25 and Get $25!
CAPREDICTSClaim (opens in a new tab)21+ · T&Cs apply
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.
On this page · 6
Kalshi for most California traders, or ProphetX if you only trade sports. Sleeper is a fantasy and pick'em app, not a CFTC-regulated exchange.
- #1, broadest CFTC market coverage. Trade $25 and get $25 with code CAPREDICTS. Best for politics and the widest US event-contract mix.
- A fantasy and pick'em sports app, not a CFTC-regulated exchange. For sports event contracts in California, use ProphetX.
Kalshi · Trade $25 and Get $25!
CAPREDICTS
Claim on Kalshi (opens in a new tab)
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.
Last checked October 27, 2026
Legality in California
Kalshi is a CFTC-regulated exchange that accepts California residents (Kalshi's minimum age is 18; we recommend 21+). Sleeper runs fantasy and pick'em games under different rules, so check the Sleeper app for what is available in California. Courts are still deciding whether state gambling law can apply to sports event contracts; the 9th Circuit, whose rulings cover California, sided with Nevada against Kalshi at the preliminary stage in August 2026.
Markets and coverage
Kalshi covers sports, politics, economics, culture, crypto, and weather: the broadest coverage in the US market. Sleeper focuses on sports (NFL, NBA, MLB, NHL, soccer) through fantasy and pick'em games, not exchange-traded contracts. If you only trade sports and want a CFTC-licensed exchange, ProphetX is the sports-first option. If you want politics or Fed markets, Kalshi delivers.
Pricing & fees
Kalshi charges modest per-contract fees disclosed at order entry, typically competitive with traditional futures exchanges, with no built-in house margin like a sportsbook. Sleeper is a fantasy and pick'em app, not an exchange, so check the Sleeper app for its costs and terms.
User experience
Kalshi's interface is finance-forward: markets organized by category, clean order flow, feels like a trading app. Sleeper's interface is social-forward. Your fantasy leagues and group chats live in the same app as your picks. The right answer depends on whether you want focus or community.
Who should use which
Use Kalshi if: you want broad market coverage, you're not already on Sleeper for fantasy, or you want a more focused trading experience. Use ProphetX if: you only trade sports and want a CFTC-licensed exchange with peer-to-peer pricing. Sleeper is a fantasy and pick'em app, not a CFTC-regulated exchange; check the Sleeper app for what it offers in California.
How we rank
The ranking comes from the scorecard on our methodology page. Each platform is scored on five things:
- Regulation and California availability (25%): who regulates the platform and whether California residents can open an account.
- Fees and order fills (25%): trading, deposit and withdrawal fees, and how our test orders were filled.
- Market range and liquidity (20%): how many markets are live and how much trading there is on the main contracts.
- Deposits and withdrawals (15%): which payment methods work and how long the money takes to arrive.
- App quality and support (15%): app stability, the website, and how support answered a test request.
The sign-up offer is shown for each platform but is not part of the score.
Tested by Catie Di Stefano, who opens an account, deposits our own money, places trades and withdraws. The full process is on our methodology page.
We earn a commission when you open an account through the links on this page. That is how this site is funded. See our affiliate disclosure.
When each platform was last checked
Check the facts yourself
- CFTC list of designated contract markets (opens in a new tab)
The federal regulator's own list of exchanges allowed to offer event contracts.
- California Attorney General: gambling in California (opens in a new tab)
The state's own summary of what counts as legal gambling in California.
- Commodity Exchange Act (7 U.S.C. § 1 et seq.) (opens in a new tab)
The federal law these exchanges operate under. Courts are still deciding how far it overrides state gambling law.
Fees, state lists and offer terms come from each operator's own fee schedule and terms, which we read during testing.
Sources & further reading
Every figure and legal claim on this page traces back to a primary source. These are the ones we checked, open them and verify us.
- Kalshi. Official site (opens in a new tab)
The exchange's own contract rulebooks and market listings.
- Sleeper. Official site
Contest rules and state eligibility.
- CFTC: Commodity Futures Trading Commission (opens in a new tab)
The federal regulator that authorizes and supervises every event-contract exchange we cover.
- CFTC designated contract markets registry (opens in a new tab)
Official list of registered exchanges, where we verify a platform's DCM status.
- National Council on Problem Gambling (opens in a new tab)
Free, confidential help and self-assessment tools (1-800-522-4700).
Next steps
Check each platform's review for how it is regulated and whether it accepts California residents before you open an account.
Kalshi
US-regulated (CFTC) exchange with a wide range of markets.
Sign up at Kalshi (opens in a new tab)Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.
ProphetX
Your sports prediction market. Same moments, bigger payouts. Available in 49 states plus D.C.
Trade $50, Earn $75! · code CAPREDICTS
Sign up at ProphetX (opens in a new tab)New users only. T&Cs apply. ProphetX's minimum age is 18 (or the local age of majority if higher); we recommend 21+. Not available in Nevada. Trading involves risk.
Frequently asked questions
Is Kalshi or Sleeper legal in California?
Kalshi is a CFTC-regulated exchange that accepts California residents (Kalshi's minimum age is 18; we recommend 21+). Sleeper runs fantasy and pick'em games under different rules, so check the Sleeper app for what is available in California.
Which has more markets, Kalshi or Sleeper?
Kalshi. It covers sports, politics, economics, culture, and macro. Sleeper focuses primarily on sports.
Can I trade fantasy on Kalshi?
No. Kalshi is a prediction market exclusively. Sleeper is a fantasy and pick'em app, not a CFTC-regulated exchange.
Which is better for NBA playoff trading?
Kalshi lists NBA playoff markets on a CFTC-regulated exchange, and ProphetX is the sports-first exchange alternative. Sleeper covers the NBA through fantasy and pick'em games, not exchange trading.
Do I need to pick one?
No. Many California traders hold two exchange accounts: Kalshi for breadth, ProphetX for sports-only trading. Sleeper is a fantasy and pick'em app, not a CFTC-regulated exchange.
Which is cheaper?
They are not directly comparable. Kalshi charges a disclosed per-contract fee with no built-in house margin; Sleeper is a fantasy and pick'em app, so check the Sleeper app for its costs. Actual costs depend on market and trade size.
Already have Kalshi? Add a second app
- OG: Trade $25 Get $50 in Rewards! (New users only) (code
CAPREDICTS) · 42 states + D.C. Claim on OG (opens in a new tab)
Paid partnership with OG. Terms and conditions apply. Trading derivatives involves risk and may not be appropriate for all. Availability subject to jurisdictional limitations. For more information, visit: OG.com. - ProphetX: Trade $50, Earn $75! (code
CAPREDICTS) · 49 states + D.C. Claim on ProphetX (opens in a new tab)
New users only. T&Cs apply. ProphetX's minimum age is 18 (or the local age of majority if higher); we recommend 21+. Not available in Nevada. Trading involves risk.
21+ · T&Cs apply · Terms
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.