Polymarket International vs Seer: scale or flexibility? (2026)

Polymarket International and Seer both let users trade positions on real-world outcomes, but they serve different priorities. Polymarket International is built around a broad selection of markets spanning politics, sports, crypto, esports, finance, technology and other topics. It displays outcome prices as percentages and shows volume on featured markets, helping users assess implied odds and activity.

Seer puts more emphasis on market creation and on-chain market structure. Users can create markets and choose from categorical, multi-categorical, scalar and multi-scalar formats. Its listed TVL is much smaller: about $322,532 versus about $316.4 million for Polymarket International. TVL is not a promise of depth on every market, but the difference signals that Seer is the smaller option. Choose Polymarket International for breadth and scale; choose Seer if custom markets and its token design matter more to you.

Neither platform publishes a complete fee schedule. Polymarket International does not publish trading, deposit or withdrawal costs. Its referral program describes a share of fees for referrals, but does not state what users pay. On-chain actions may also involve Polygon network costs; amounts are not published by the project.

Seer does not publish trading, market-creation or liquidity-provider fees. Trades and other on-chain actions on Gnosis or Ethereum also require gas, and the cost varies with the network and its congestion. The project does not give fee figures. Check the interface and official documentation for current costs before placing a trade or creating a market. Since fees cannot be compared from published schedules, neither platform can be called the cheaper choice on this information alone.

Polymarket International has two audits listed, but the auditors and audit findings are not named. That count is not a guarantee against contract flaws or losses. Seer has no audits listed, so its smart-contract risk is not independently documented through a listed audit. Both platforms carry risks beyond the contracts themselves.

Resolution is an important distinction. On Seer, Reality.eth answers can be challenged, with disputes settled by Kleros; unclear wording can lead to contested or delayed outcomes. Polymarket International also exposes users to the risk that a market's resolution rules or outcome determination may not match their expectations. Neither publishes KYC details in the information presented here, and licensing or regional access can matter. Prediction markets may be restricted or regulated where you live. Use either only if you are 18 or older and have checked local laws, and do not stake money you cannot afford to lose.

Polymarket International is the more straightforward fit for users who want a large menu of existing markets. Its probability-style prices provide a quick view of the market's implied odds, while visible volume and market news offer context. Its navigation also lists Combos and Perps alongside standard prediction markets. Those features do not remove the need to check spreads: thin markets can have wide spreads, and long-dated positions can tie up funds.

Seer offers a different kind of flexibility. Market creators can set rules and choose among four market formats, and ERC1155 outcome positions are wrapped into ERC20 tokens for trading and DeFi use. Its non-custodial design means users retain control of their wallets, but it does not remove smart-contract, gas or resolution risk. Its smaller listed TVL may also mean thinner order depth. If you prefer a ready-made range of active markets, Polymarket International is likely the easier fit; Seer is more compelling for market creation and composability.

Choose Polymarket International if you want the broader selection and substantially higher listed TVL. Its markets cover more topics, and probability-style prices and visible volume help users compare opportunities. Its main drawbacks are unpublished fees and KYC details, variable access rules, and outcome-resolution risk. Two audits are listed, but their names and findings are not published.

Choose Seer if creating markets, using multiple market formats or interacting across Gnosis and Ethereum matters more than scale. Its Conditional Tokens framework and ERC20-wrapped positions support trading and DeFi integration, but the listed TVL is far lower and no audits are listed. Its Reality.eth and Kleros process can also make resolution more complex. Neither platform publishes enough fee information to identify a cheaper option, and neither should be used without checking local rules. Both are gambling-related products for adults 18 and older; only risk what you can afford to lose.