The main alternatives to Polymarket are Kalshi (a CFTC-regulated US exchange that has opened to many other countries), Polymarket's own US exchange, brokers that give access to regulated event contracts such as Robinhood, licensed betting exchanges such as Betfair and Smarkets, smaller crypto prediction markets, and play-money forecasting sites. Which is an alternative for you depends on where you live and what you want: depth, regulation, custody or no money at all. Checked on 8 November 2026; Nimb maps Polymarket only and has no affiliate relationship with any venue.
What are the best Polymarket alternatives?
| If you want | Consider | Trade-off |
|---|---|---|
| A regulated US venue | Kalshi, Polymarket US, broker access (Robinhood, Interactive Brokers) | Identity checks; some states contest sport |
| Dollar account, not crypto | Kalshi, Polymarket US, brokers | The venue holds your money |
| UK access | Betfair Exchange, Smarkets | Betting licences; markets framed as bets |
| Self-custody, like Polymarket | Smaller crypto venues | Thinner markets, more contract and resolution risk |
| No money at risk | Manifold, Metaculus | No real-money prices |
| Just the prices | Read Polymarket on Nimb, or Kalshi's site | Nothing to trade |
Each in more detail: best prediction markets · crypto prediction markets · Polymarket vs Kalshi · Polymarket vs Robinhood.
Are there sites like Polymarket that let you create markets?
Play-money sites such as Manifold let users create questions. Polymarket and Kalshi list markets themselves. Can you create a market on Polymarket?
What are the alternatives to Kalshi?
For US users: Polymarket US, broker access to other CFTC-regulated exchanges, and PredictIt for politics. Outside the US: Polymarket's international platform where allowed, betting exchanges in the UK. Kalshi's strengths are its regulation and coverage of economic data, rates and weather; Polymarket's are its depth on world events and open data.
Why might the same question have different prices?
Different traders, different fees and different rules: a question on one venue rarely matches another's wording, deadline and resolution source exactly. A gap between venues is a reading in itself, not free money: moving money between them takes time and costs fees. Polymarket arbitrage.
Frequently asked questions
What is the closest alternative to Polymarket?
Kalshi, for a regulated exchange with many of the same kinds of questions; smaller crypto venues, for the self-custody model.
What can I use instead of Polymarket in the US?
Polymarket US, Kalshi and broker access to regulated event contracts, subject to your state.
What can I use instead of Polymarket in the UK?
Licensed betting exchanges such as Betfair Exchange and Smarkets. Polymarket's international platform is close-only in the UK.
Last reviewed 8 November 2026 · Data from Polymarket · Not financial advice · Nimb is not affiliated with Polymarket.