Start with the decision that matters most

Ask whether you want to:

  1. trade real money on event contracts;
  2. practice market-style forecasting without cash exposure; or
  3. submit forecasts and build a measured accuracy record without trading at all.

Those are different activities. A platform can be excellent for one and unsuitable for another.

Alternatives at a glance

ProductProduct typeMoney modelWho it may suitMain limitation to check
Polymarket USSeparate US-regulated event-contract exchangeFiat/USD accountEligible US users who want the Polymarket brand without the international crypto productSeparate account, support, catalogue, fees, and documentation
KalshiUS-regulated event-contract exchange with international access in many eligible countriesPayment methods vary by region, including traditional and some crypto routesUsers who prefer an identity-verified exchange and region-appropriate fundingCountry eligibility, current fee schedule, and market-specific rules
PredictItReal-money prediction market with a strong political focusCash account and share tradingUsers primarily interested in political questions and a relatively simple share modelTrading limitations and platform fees
ManifoldSocial, user-created prediction marketPlay-money Mana that cannot be converted to cashPeople who want varied questions, community markets, or low-stakes practiceCreator-led resolution and no cash redemption of Mana
MetaculusForecasting platform and aggregation engine, not a trading marketNo money is staked on ordinary forecasts; scores and some tournamentsUsers who want to improve calibration and track forecast qualityNo tradable position or routine cash payout from a correct forecast

Availability, funding, and features can change. Check the official source for the product at the time you intend to use it.

1. Polymarket US

Polymarket US is not a mode inside Polymarket.com. It is a separate fiat-based, US-regulated exchange built for US residents, with its own app, accounts, support, funding, fees, and market catalogue.

It may be the most natural option for a US user who specifically wants Polymarket but cannot use Polymarket.com International. It should still be evaluated as a separate product. A tutorial about Polygon, pUSD, international geographic restrictions, or UMA does not automatically describe the US app.

Consider it if: you are an eligible US resident and want a USD-based Polymarket product.

Check first: supported device, current market availability, identity requirements, funding and withdrawal rules, and current fees.

2. Kalshi

Kalshi is a US-regulated exchange for event contracts. Its current help center says the platform is accessible from many countries, subject to identity verification, the Member Agreement, and geographic restrictions. Payment options differ by region.

Kalshi is the closest broad functional comparison because it also lets participants trade event outcomes and sell before settlement. It is not simply “Polymarket without crypto.” The contract catalogue, rules, determination sources, fees, account model, and interface are its own.

Consider it if: you want a real-money event-contract exchange, prefer identity-verified access, and have a supported funding route.

Check first: location eligibility, current contract catalogue, fee schedule, market rules, source agency, and available withdrawal method.

Read the detailed Polymarket vs Kalshi comparison before comparing a percentage from one platform with a percentage from the other.

3. PredictIt

PredictIt uses shares priced from 1 to 99 cents. Its official guide says users can buy YES or NO, sell before a market closes, or hold a winning share for a $1 redemption.

The product is especially associated with political markets. That narrower focus can be useful for a person who wants a simpler political prediction-market experience rather than a broad crypto-based platform.

PredictIt's own guide also highlights trading limitations and fees. Review those details before assuming that a similar share price creates the same potential return as it would elsewhere.

Consider it if: political markets are your main interest and its current eligibility and limits suit you.

Check first: account eligibility, market-level position limits, withdrawal rules, and all current fees.

4. Manifold

Manifold is a social prediction market where users can create questions. It uses Mana, a play-money currency that the official FAQ says cannot be converted to cash. Users can begin without a purchase, although additional Mana may be available through product features.

The user-created model supports personal, community, entertainment, technology, and unconventional questions that a regulated real-money exchange may never list. It also changes the resolution model: creators generally resolve their own markets, with moderation in exceptional cases.

Consider it if: you want to practice market thinking, create a question, or participate in community forecasts without staking ordinary cash on each trade.

Check first: who created the market, the creator's reputation, the resolution wording, and whether you are comfortable with creator-led resolution.

5. Metaculus

Metaculus is a forecasting platform and aggregation engine, not a prediction market. Users submit probabilities, can update them as evidence changes, and receive scores measuring forecast performance. Ordinary forecasts do not require buying shares or staking money.

Metaculus is a better alternative when the real objective is to improve calibration, reason in public, follow science or policy questions, or build a forecasting record. Some tournaments can have prizes, but that is different from receiving a market payout whenever an individual forecast is correct.

Consider it if: learning, forecast accuracy, and long-horizon questions matter more than trading.

Check first: question close and resolution dates, scoring rules, tournament-specific terms, and how ambiguous outcomes are handled.

A practical decision tree

Do you want to risk real money?

No: Choose Manifold for a market-like social game or Metaculus for scored forecasting.

Yes: Continue to the next question.

Are you a US resident specifically looking for Polymarket?

Yes: Evaluate Polymarket US as a separate product. Compare its current catalogue, fees, and funding with Kalshi and PredictIt.

No: Check whether Polymarket.com International and Kalshi each permit access from your location.

Do you want broad event-contract trading or mainly politics?

Broad event contracts: Compare Polymarket International, Polymarket US where applicable, and Kalshi.

Primarily politics: Include PredictIt, then compare its limits, fees, and exact market rules with the other eligible products.

Do you want to create your own question?

Yes: Manifold is the most relevant product in this shortlist.

No: A centrally listed exchange or forecasting platform may provide more consistent question design.

What to compare beyond the headline price

Two products can show 60% for questions that are not actually equivalent. Before comparing:

  • read the exact market wording;
  • compare deadlines and time zones;
  • identify the official resolution source;
  • check cancellation, void, or ambiguous-outcome rules;
  • use the executable bid or ask, not only a displayed probability;
  • include fees, spread, and funding costs;
  • confirm position limits; and
  • confirm that you can withdraw through a supported route.

A one-cent price difference is meaningless if one contract resolves using a different source or cutoff.

Limitations of this comparison

This page is a product-selection guide, not a ranking based on personal account testing. Market catalogues, fees, access, prize programs, and payment methods change. Eligibility is not legal advice. Verify each product through its own current terms and help center.

Focused answers

Frequently asked questions

What is the closest alternative to Polymarket?

For broad real-money event contracts, Kalshi is the closest comparison in this list. For a US resident who specifically wants Polymarket, Polymarket US is the separate same-brand product.

Is there a free alternative to Polymarket?

Manifold offers a play-money prediction-market experience, while Metaculus lets users submit scored forecasts without buying shares. They serve different purposes.

Which alternative does not require crypto?

Polymarket US, Kalshi, and PredictIt have non-crypto account or funding models, subject to location and current methods. Manifold and Metaculus do not require a crypto deposit for ordinary participation.

Can I use Kalshi outside the United States?

Kalshi's current help center says it is accessible in many countries, with restrictions and identity verification. Supported payment methods differ for international users. Check the current Member Agreement.

Do all alternatives resolve markets the same way?

No. Resolution can be handled by an oracle process, an exchange using a named source, a market creator with moderation, or platform administrators. Read the rules of the exact product and question.

Should I use several platforms to find the best odds?

Comparing can be informative, but only after confirming that the contracts are genuinely equivalent. Different wording, limits, liquidity, fees, or settlement sources can make an apparent price gap non-comparable.

Bottom line

Choose the activity before the platform

Choose a Polymarket alternative by the activity you actually want: regulated real-money event contracts, political markets, user-created play-money questions, or scored forecasting. The correct fit depends on eligibility, funding, rules, and resolution—not on a universal “best” label.

Primary references

Sources checked for this guide

  1. What is Polymarket US? — Polymarket US Documentation
  2. Signing Up as an Individual — Kalshi Help Center
  3. How to Trade on PredictIt — PredictIt
  4. Manifold FAQ — Manifold Documentation
  5. Metaculus FAQ — Metaculus

Sources were reviewed on August 2, 2026. Product rules, rates, availability, and interfaces can change; the linked first-party page controls when it differs from this summary.