Ranked by trading volume, fees, market selection, and features. Based on real-time tracking of 600+ live markets. Updated March 31, 2026.
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| # | Platform | Best For | Fees | US Access | Score |
|---|---|---|---|---|---|
| 1 | Polymarket | Overall best, highest volume | Free | Limited | 23/25 |
| 2 | Kalshi | US traders, regulated | 7% on winnings | Yes | 21/25 |
| 3 | Robinhood PM | US mainstream, no crypto | 0% | Yes | 20/25 |
| 4 | FanDuel Predicts | US sports/politics traders | 3% on profits | Yes | 19/25 |
| 5 | Metaculus | Forecasting accuracy | Free | Yes | 17/25 |
| 6 | Manifold | Community markets | Free | Yes | 15/25 |
| 7 | Insight Prediction | US crypto alternative | Low | Yes | 14/25 |
Based on our real-time tracking of 600+ markets across these platforms, we rated each platform on five criteria scored 1–5. Each score reflects hands-on data — spread quality, resolution speed, account setup friction, and regulatory status — not just marketing claims.
| Platform | Volume (1–5) | Fees (1–5) | US Access (1–5) | Ease of Use (1–5) | Trust/Safety (1–5) | Total |
|---|---|---|---|---|---|---|
| Polymarket | 5 | 5 | 3 | 4 | 3 — no US reg | 23/25 |
| Kalshi | 4 | 3 | 5 | 4 | 5 — CFTC | 21/25 |
| Robinhood PM | 3 | 5 | 5 | 5 | 4 — CFTC via partner | 20/25 |
| FanDuel Predicts | 3 | 4 | 5 | 4 | 4 — CFTC + CME | 19/25 |
| Metaculus | 2 | 5 | 5 | 3 | 4 — no $ at risk | 17/25 |
| Manifold | 2 | 5 | 5 | 3 | 2 — play money | 15/25 |
| Insight Prediction | 2 | 3 | 4 | 3 | 2 — limited track record | 14/25 |
Volume scores reflect live order book depth. Fee scores reward lower costs — 5 = free/zero commission, 1 = 10%+ fee drag. US Access scores reflect full legal access without restrictions. Ease of Use scores account for onboarding friction, mobile support, and deposit methods. Trust/Safety scores reflect regulatory status, years of operation, and fund security.
Polymarket is the undisputed leader in prediction markets by every meaningful metric. With over $10 billion in cumulative trading volume and more than 800,000 unique wallets ever participating, it offers the deepest liquidity, tightest spreads, and most diverse market selection of any platform on this list. The CLOB (Central Limit Order Book) matching engine provides professional-grade execution, and zero trading fees make every dollar of edge count.
PredScope tracks Polymarket odds across 600+ live markets daily. Consistently, Polymarket prices are the first to move when news breaks — often minutes ahead of other platforms. That speed reflects genuine liquidity: when a market has millions of dollars on both sides, sophisticated traders correct mispricings instantly.
The platform covers politics, geopolitics, crypto, sports, entertainment, science, and AI — with new markets added daily. Elections markets in particular draw huge volume; during the 2024 US Presidential race, some Polymarket contracts exceeded $500M in single-market volume.
Best for: International traders, crypto-native users, and anyone who wants the widest market selection with the best prices. Read our complete Polymarket guide or the Polymarket Review 2026.
Kalshi is the only prediction market exchange that has been CFTC-regulated since 2020, making it the clear legal choice for US residents. With over $1 billion in cumulative volume, it's grown from a startup to a serious financial exchange — attracting institutional traders alongside retail users. Deposits via ACH bank transfer or debit card mean no crypto knowledge is required.
Kalshi's market selection focuses on the events that matter most for financial decisions: Fed interest rate decisions, CPI prints, hurricane landfalls, election outcomes, and Congressional bill passages. Many traders use Kalshi not purely to profit but to hedge real-world exposure — for example, buying "Yes" on a Fed rate hike if they have a variable-rate loan.
The fee structure charges approximately 7% on winning positions at settlement — there's no per-trade commission. On liquid markets with tight spreads, this is competitive. On illiquid markets with wide bid-ask, the effective cost is higher. PredScope's comparison tracker shows Kalshi prices typically lagging Polymarket by 1–3 percentage points on shared markets — the cost of the regulatory premium.
Best for: US residents who want legal certainty, fund protection, and USD-based trading on political and economic markets. Read our complete Kalshi guide.
Robinhood's entry into prediction markets in early 2026 is the biggest structural shift the industry has seen since Kalshi's CFTC approval. With over 23 million funded accounts already on the Robinhood platform, prediction markets are now one click away for a massive audience that has never touched a crypto wallet or heard of Polymarket.
The product is elegantly simple. Existing Robinhood users see prediction markets as a tab alongside stocks, ETFs, and crypto. Binary contracts on political, economic, and selected sports events are available. Contracts settle at $1.00 if the event occurs and $0.00 if it doesn't — the same structure as Kalshi. There are no commissions, and Robinhood earns on order flow, consistent with their core brokerage model.
The regulatory structure routes through a CFTC-designated contract market, giving trades legal standing for US participants. Market depth is still building as of March 2026, but spreads on flagship markets (election outcomes, Fed rate decisions) are already competitive with Kalshi. PredScope's cross-platform tracker will flag when Robinhood prices diverge materially from Polymarket, creating arbitrage-like opportunities.
Best for: US residents who already use Robinhood for stock trading and want to add prediction market exposure with zero friction. Read our full Robinhood Prediction Markets guide or see the Polymarket vs. Robinhood comparison.
FanDuel Predicts is the most high-profile prediction market launch of 2026, backed by FanDuel's brand reach (millions of existing sports bettors and fantasy players) and CME Group's regulatory and financial infrastructure. CME Group — the world's largest derivatives exchange — provides the exchange-level compliance framework, meaning FanDuel Predicts is built on institutional-grade plumbing from day one.
The platform targets a natural audience: US sports fans who already understand the concept of betting on outcomes. FanDuel Predicts extends that to political events, economic data releases, and entertainment — framed as "forecast markets" rather than gambling. The 3% fee on net profits is transparent and lower than Kalshi's typical 7%, making it competitive for high-frequency traders.
Market selection at launch includes US federal election races, Fed rate decisions, Super Bowl and playoff outcomes, major award shows, and select international events. FanDuel's existing user base of 12M+ active accounts gives FanDuel Predicts an unusually strong liquidity foundation for a new platform.
Best for: US sports fans and daily fantasy players who want to trade on broader event outcomes with a trusted brand and low fees. Read our full FanDuel Predicts review.
Metaculus is a forecasting platform rather than a traditional prediction market — there's no real money involved. Forecasters earn reputation points based on the accuracy of their probabilistic predictions, tracked over thousands of questions. This scoring system (using a Brier score variant) means your Metaculus track record is a genuine signal of forecasting skill.
With over 10,000 questions resolved and a community of more than 50,000 registered forecasters, Metaculus has built one of the most comprehensive public forecasting datasets in existence. Questions span AI timelines, geopolitical conflicts, scientific breakthroughs, economic indicators, and public health — often with multi-year resolution windows that no money-based market could sustain.
Metaculus is uniquely valuable as a training ground. Before deploying capital on Polymarket or Kalshi, spending time on Metaculus developing your calibration — understanding the difference between 70% and 85% confident — dramatically improves real-money performance. Several professional traders cite Metaculus as part of their research process.
Best for: Aspiring forecasters, researchers, policy analysts, and anyone who wants to build forecasting skill before risking real money.
Manifold stands out by letting anyone create a market on anything — no approval process, no moderation delay, no minimum volume requirement. It uses a dual system of play money (Mana) for most activity plus sweepstakes-style cash prizes, which keeps the platform accessible in all US states without triggering gambling regulations.
The community skews toward rationalists, tech workers, effective altruists, and prediction market enthusiasts. As a result, you'll find markets on AI capability timelines, startup funding rounds, scientific replication studies, and interpersonal bets that simply don't exist anywhere else. Manifold functions as a collective intelligence layer for communities — internal company prediction tournaments, research group forecasting, and personal accountability markets all live here.
Best for: Community engagement, niche topic forecasting, and anyone who wants to create their own markets without bureaucratic friction.
Insight Prediction targets the gap between Polymarket's depth and Kalshi's regulatory overhead — a crypto-native US-accessible platform with competitive fees and a political/economic market focus. It attracts traders who want crypto-based settlement without Polymarket's US access restrictions.
Liquidity is still developing, and the platform has a smaller track record than the others on this list. It's worth watching as the US prediction market landscape expands in 2026, but we'd recommend starting with Robinhood or Kalshi until Insight's volume matures.
Best for: US traders who want crypto-based prediction trading and don't mind thinner liquidity on some markets.
| Feature | Polymarket | Kalshi | Robinhood PM | FanDuel Predicts | Metaculus |
|---|---|---|---|---|---|
| Real Money | Yes (USDC) | Yes (USD) | Yes (USD) | Yes (USD) | No |
| Trading Fees | 0% | ~7% on wins | 0% | 3% on profits | N/A |
| US Full Access | No | Yes | Yes | Yes | Yes |
| KYC Required | Yes | Yes | Yes (Robinhood) | Yes | No |
| Mobile App | No | Yes | Yes | Yes | No |
| Regulation | None (US) | CFTC | CFTC (partner) | CFTC + CME | N/A |
| Deposit Method | Crypto (USDC) | ACH / Card | Existing account | ACH / Card | N/A |
| Launched | 2020 | 2020 | 2026 | 2026 | 2015 |
| Cumulative Volume | $10B+ | $1B+ | Growing | Growing | N/A (no $) |
Rather than a generic checklist, here are concrete user profiles based on the types of traders we hear from most often. Based on our real-time tracking of 600+ markets across these platforms, the right answer depends heavily on where you live, how comfortable you are with crypto, and what you want to trade.
Start with Robinhood Prediction Markets — zero friction, zero new accounts, zero crypto learning curve. Once you're comfortable with how binary contracts work, explore Kalshi for deeper market selection and FanDuel Predicts for sports overlap.
Start with: Robinhood PM → Kalshi → FanDuel Predicts
Kalshi is your primary platform — CFTC-regulated, deep political and economic market coverage, and competitive prices on major events. Open a FanDuel Predicts account as a secondary — the 3% fee is lower than Kalshi's 7% on winning positions, and you can compare prices before trading.
Primary: Kalshi — Secondary: FanDuel Predicts
Polymarket is the clear answer. $10B+ cumulative volume, 600+ active markets, zero fees, and the tightest spreads across every category. Set up a USDC wallet via Coinbase or Kraken and you're trading within 20 minutes.
Platform: Polymarket
FanDuel Predicts is built for you. FanDuel's interface is familiar, sports event markets are prominently featured, and the regulatory structure means your funds are protected. Treat prediction markets as a complement to your existing sports analysis — your domain knowledge is a genuine edge.
Platform: FanDuel Predicts
Spend 30–60 days on Metaculus and Manifold. Track your calibration on Metaculus — are your 70% calls right ~70% of the time? Once you can demonstrate consistent calibration over 50+ questions, you have a genuine edge to bring to Polymarket or Kalshi.
Start with: Metaculus → Manifold → Kalshi / Polymarket
Polymarket for real-money, high-stakes event probabilities. Metaculus for long-range scientific and technology questions with deep community commentary. Both are free to browse without an account.
Browse: Polymarket + Metaculus (PredScope aggregates both)
PredScope aggregates live odds from Polymarket and Kalshi — updated in real time across 600+ markets.
Browse Live Markets Compare PlatformsPredictIt was once the most popular US prediction market, operating under CFTC no-action relief via Victoria University of Wellington. It played a significant historical role — during the 2016 and 2020 elections it was cited routinely in major media as a source for political probabilities. At peak it had hundreds of thousands of users and offered the only legal real-money US election markets.
The CFTC ordered PredictIt to wind down in 2023 after concluding operations had exceeded the scope of the no-action relief. While PredictIt contested the ruling and some markets remain technically active, the platform is no longer accepting new deposits, not creating new markets, and is not recommended for new users.
What to use instead: Kalshi, Robinhood Prediction Markets, or FanDuel Predicts all offer legal US political market trading with better fees, better liquidity, and modern interfaces. Existing PredictIt traders should withdraw funds as markets resolve.
Polymarket is the most popular prediction market by trading volume, with over $10 billion in cumulative volume and 800,000+ unique wallets. It gained mainstream attention during the 2024 US Presidential election when it became a widely-cited source for election odds, and volume has continued growing into 2026.
It varies significantly. Polymarket charges zero trading fees — you only pay Polygon network gas (under $0.01 per trade). Robinhood Prediction Markets also charges zero commissions. FanDuel Predicts charges 3% on net profits. Kalshi charges approximately 7% on winning positions when markets resolve. PredictIt (legacy) charged 10% on profits plus 5% on withdrawals. Always factor fees into your expected value calculations before trading.
Legally, CFTC-regulated markets like Kalshi, Robinhood Prediction Markets, and FanDuel Predicts are classified as derivatives exchanges — not gambling. They are federal financial contracts. However, some states have their own definitions, and unregulated platforms like Polymarket occupy a grey area for US users. Read our detailed legal analysis.
For US beginners: Robinhood Prediction Markets if you have a Robinhood account, or Kalshi if you don't. For non-US beginners: start on Metaculus (free, no money at risk) to build calibration skills, then move to Polymarket. Avoid starting with high-fee platforms while you're still learning market dynamics.
Research consistently shows prediction markets outperform expert forecasters and polls when liquid. Polymarket's election markets have shown strong calibration: events priced at 70% occur roughly 70% of the time. Metaculus has published extensive accuracy data showing its community's Brier scores beat comparable expert panels. That said, thin markets on niche topics can be manipulated or mispriced — always check volume before relying on a market as a probability signal. Read our full accuracy analysis.
Yes, and sophisticated traders often do. PredScope's real-time cross-platform tracker lets you compare prices on the same event across Polymarket and Kalshi simultaneously. When Kalshi shows 62% and Polymarket shows 67% on the same event, there's potential for cross-platform arbitrage. Note that the mechanics (crypto vs. USD, different settlement timelines) make pure arbitrage complex — but price divergences are valuable signals even if you trade only one platform. See our arbitrage guide for details.
For US traders on CFTC-regulated platforms (Kalshi, Robinhood Prediction Markets, FanDuel Predicts), winnings are treated as Section 1256 contract gains — taxed at 60% long-term / 40% short-term capital gains rates regardless of how long you held. For Polymarket (crypto-based), each trade may constitute a taxable crypto disposal event. Consult a tax professional familiar with derivatives and crypto. Read our full tax guide.
Based on PredScope's real-time tracking of 600+ live markets, here are the key trends shaping the prediction market industry right now:
The prediction market industry hit $23.9 billion in monthly trading volume in March 2026 — a 1,107% increase year-over-year. Monthly active users reached 865,000, with 192 million transactions processed (a record). For context, the entire industry was under $2 billion/month just one year ago.
If you're new to prediction markets in 2026, start with one platform, not three. International users should go with Polymarket — zero fees, deepest liquidity, and the widest market selection. US users should start with Kalshi for regulatory peace of mind, then add Polymarket for crypto/global markets. Don't spread your capital across too many platforms — focus on learning one well before expanding.
The opportunity right now is significant: the industry is growing at 10x/year, new platforms are competing for users with sign-up bonuses and zero fees, and major events (World Cup, 2028 election cycle) are creating unprecedented liquidity. This is the best time to start.
Polymarket for international traders — zero fees, 600+ markets, deepest liquidity. Kalshi for US residents — CFTC-regulated, USD deposits, legal certainty.
Trade on Polymarket → Full Review