Metaculus

Metaculus is a reputation-based forecasting platform, not a paid-entry prediction market. It is operated by Metaculus, Inc., a public-benefit corporation, and has been running since 2015. players submit probability estimates on carefully structured questions and earn points based on how accurate their predictions are compared to the community and to ground truth. There is no real-money trading and no orderbook. Some tournaments do pay prize-redemption opportunities to top performers, but the day-to-day product is a forecasting track record system.

Overview

Metaculus exists because serious forecasting research needed a platform where questions could be rigorously specified, resolved by trusted moderators, and scored over long time horizons. It is used by academic researchers, government forecasting programs (including IARPA-adjacent work), AI safety organizations, and individual superforecasters who want calibrated track records.

Market Coverage

Questions span geopolitics, AI and machine learning progress, biosecurity and pandemics, climate and environment, space exploration, economics, and technology milestones. Questions are curated and must pass an editorial and community review process before going live — this is the opposite of Manifold's anyone-can-create model. The tradeoff is quality over quantity.

Pricing & Fees

Free to use. No account fees, no transaction fees. Metaculus is funded by grants, tournament sponsorships, and research contracts. There is nothing to buy and nothing to sell.

Banking

None. players do not deposit money, do not withdraw money, and do not post collateral. Accounts are free and email-based. No KYC.

Ongoing Promos / Liquidity Programs

Metaculus runs regular tournaments with prize-redemption opportunities pools funded by sponsors — historically including Open Philanthropy, the Future of Life Institute, Bridgewater Associates, and Astral Codex Ten. The 2026 Bridgewater x Metaculus competition and the ACX 2026 Prediction Contest are active examples. Tournament prizes are distributed to the top forecasters measured by a calibration-aware scoring rule. This is prize-redemption — but it is earned through demonstrated skill in sponsored contests, not by trading against other players for profit.

Regulatory Reality

Metaculus does not fall under CFTC or SEC jurisdiction because there are no contracts, no orderbook, no counterparties, and no real-money trading in the day-to-day product. players submit forecasts, which are information, not instruments. Tournament prize pools are structured as skill-contest awards, which is the same legal category as chess tournaments and hackathons. US residents can use Metaculus legally without restriction, regardless of state. No KYC, no geo-blocking, no problem.

Player Experience

The Metaculus interface is clean and information-dense. Each question page shows the full distribution of community predictions over time, the resolution criteria, comments, and the player's own prediction history. Scoring is based on calibration and resolution relative to the community, and your track record is public. This is a genuinely useful tool for anyone who wants to quantify how good they are at forecasting.

Metaculus also runs FutureEval, an AI forecasting benchmark that tracks how well large language models predict real-world outcomes. Developers can enter AI systems in bot tournaments for substantial prize-redemption opportunities.

The Bottom Line

Metaculus is the gold standard for serious, calibration-focused forecasting practice in the US. It is not a way to make money day-to-day — points are reputation, not dollars. If you want prize-redemption exposure, you need Kalshi, Polymarket, or FanDuel Predicts. If you want to become a measurably better forecaster, build a public track record, and compete in high-quality tournaments with sponsor-funded prize-redemption opportunities, Metaculus has no real peer. It is also the only platform on this list that genuinely contributes to forecasting research literature.

Compare Metaculus as a gambling platform option with availability, licensing, bonus, payment, and account details reviewed where public evidence is available.

Overview

It is active in BonusBell review coverage and is tied to Metaculus Inc, with public-facing operations associated with San Francisco, CA. Metaculus is currently categorized by BonusBell under prediction and mapped to 51 eligible states/districts in the live jurisdiction model. Available review data shows players can expect Science, Technology, AI, Geopolitics, Economics. Distinct hooks currently tracked by BonusBell include Academic/research forecasting; reputation-based; no real money.

Bonuses and rewards

Metaculus currently advertises Free (reputation-based). That line is useful as a quick hook, but players usually need more context around playthrough, expiry, qualifying wager size, and whether the offer is actually the best reason to sign up. No verified VIP ladder is attached to this platform record right now, so long-term loyalty value could be treated as unverified until stronger sourcing is attached.

Banking and claim flow

Banking details are still uneven in available review data, which is a meaningful caution flag for anyone comparing operators primarily on redemption speed or cashier flexibility. Even when available review data does not expose every term, players still need this section because actual value depends on how easy it is to fund, verify, and cash out, not just on promotional copy.

Availability and regulatory reality

Metaculus sits inside the social or sweepstakes bucket and is currently modeled as available across 51 states/districts. For this category, the most important reader question is whether the free and redeemable currency mechanics, jurisdiction restrictions, and redemption process are explained clearly enough before someone spends time or money. The current license note reads: None (Academic Exemption).

Player experience

Metaculus presents a more complete operating profile because BonusBell can already identify deposit methods such as other, withdrawal options like other. Current review signals put it at 4.7 rating with a 8.7/100 trust score. Those are only as strong as the source data behind them, so the rest of this review should be read as the evidence layer behind the headline number.

The bottom line

For sweepstakes and social players, the more honest question is whether Metaculus adds a genuinely better free-to-paid progression, redemption path, or game mix than the already-established category leaders. Metaculus is best judged on the full operating picture: product quality, regional access, banking clarity, bonus terms, and whether the evidence in the review is strong enough to trust. Until every major field has clear evidence, this review could be treated as a reference, not financial or legal advice.