My name is Heorhii. I analyze emerging cryptofinancial primitives and I enjoy breaking down systems that seem simple on the surface but hide deep engineering choices. Prediction markets are one of those systems. Over the last two years this sector evolved into a serious financial layer with billions in weekly flow.
Prediction markets have evolved from niche crypto experiments into a full-fledged financial microsector with billions in weekly trading volume. What once looked like a curiosity now resembles a new class of probabilistic derivatives infrastructure.
Today three platforms define the core of this ecosystem:
Polymarket, Kalshi, and Opinion. Combined weekly volume across these three platforms already exceeds 2 billion USD, and sector TVL surpasses 300 million USD.
1. The three key players:
• Polymarket: the dominant onchain prediction market
• Kalshi: the regulated institutional exchange
• Opinion: the new high-volume onchain entrant targeting Asian flow
2. Polymarket
Polymarket | The World's Largest Prediction Market
Trending polymarkets. Polymarket is the world's largest prediction market. Trade on the world's most highly-debated topics like crypto, politics, sports, current events, and more.
2.1. Founder. Polymarket was founded by Shayne Coplan, who entered crypto at 17, worked across early Ethereum and Multicoin-related circles, and later became convinced prediction markets are the strongest antidote to misinformation.
2.2. Metrics:
• Total trading volume: 23+ billion USD
• Peak daily volume: ~300M USD during US elections
• Open interest: ~229M USD
• Total liquidity across ecosystem tools: 550M+ USD
Polymarket remains the cultural and liquidity leader of the industry.
2.3 Technical Architecture
Settlement layer. Polymarket operates on Arbitrum Nova, enabling:
• extremely low transaction fees
• high throughput
• rapid market settlement
• scalable multi-market structure
AMM model. Polymarket uses a binary constant-product CPMM design:
P(YES) = YES_liquidity / (YES_liquidity + NO_liquidity)
This gives continuous liquidity and predictable slippage.
Orderflow ecosystem. Dominated by:
• high-frequency bots
• systematic MM strategies
• retail directional flow
Bots constitute more than half of daily volume.
Oracle system. Powered by UMA’s Optimistic Oracle, enabling:
• fast resolution
• rare disputes
• decentralized arbitration
Custody. Fully noncustodial. Trades settle via user-owned wallets.
API. Polymarket offers REST + Websocket feeds and supports third-party terminals like Sharpe Terminal, Betmoar and PolyTrader Pro.
3. Kalshi
3.1. Founding and regulatory context. Kalshi was founded by Luana Lopes and Tarek Mansour, both MIT graduates with strong math and economics backgrounds. Tarek worked at Goldman Sachs before launching the platform.
Key milestones:
• 2020 — becomes the first CFTC-approved event contract exchange
• 2025 — wins a landmark case vs CFTC, confirming political markets are legal in the US
3.2. Metrics:
• Total volume: 16+ billion USD
• Stable monthly volume: 200M+ USD
• Open interest: 305M USD
Kalshi is the institutional, regulated pillar of prediction markets.
3.3. Regulatory and Technical Architecture
Regulatory profile:
• strict KYC/AML
• full US compliance
• banned jurisdictions include Russia, Belarus, Ukraine, Poland
• all contracts require CFTC approval
Kalshi is the only prediction market with institutional-grade regulatory clarity.
Market engine. A centralized orderbook exchange using:
• microsecond matching
• FIX API support
• professional-grade market makers
• USD clearing
• full margin and portfolio risk engine
This mirrors legacy financial exchanges such as CME or Nasdaq.
Oracle and settlement. Kalshi uses centralized, regulator-approved resolution authorities with legally enforceable outcomes.
4. Opinion
OPINION Homepage
Trade Tomorrow Now
4.1. Origin and positioning. Opinion is the most opaque major platform in the sector.
Team identities are not disclosed. Many community analysts speculate a connection to CZ or Binance’s extended ecosystem due to its early visibility on Binance Square.
The platform originally operated in invite-only mode, targeting high-velocity Asian liquidity.
4.2. Metrics:
• Total volume: 3+ billion USD
• Peak daily volume: ~600M USD (Nov 4, 2025)
• Open interest: 33M USD (KuCoin Research)
Opinion is the second-largest onchain platform by volume, but remains far behind Polymarket in brand strength and overall market breadth.
4.3. Technical Architecture
Settlement layer. Likely on an EVM L2 with:
• ultra-low fees
• very high TPS
• rapid internal settlement mechanisms
Liquidity design. Opinion appears to use a hybrid system:
• thin internal orderbook for fast price discovery
• fallback CPMM-style liquidity to ensure continuous trading
Oracle design. Semi-centralized resolution controlled by the platform.
Very fast settlement, minimal dispute mechanics.
Custody model. Semi-custodial smart contracts comparable to BSC-style dApps.
API layer. Minimal public documentation increases suspicion that priority is given to private quant traders.
5. Comparative overview:
Feature | Polymarket | Kalshi | Opinion |
|---|---|---|---|
Core architecture | Onchain AMM | Centralized orderbook | Hybrid OB + AMM |
Regulation | None | Fully CFTC regulated | None |
Custody | Noncustodial | Custodial USD | Semi-custodial |
Oracle | UMA Optimistic | Centralized authority | Internal |
Market creation | Very fast | Slow (CFTC approval) | Extremely fast |
Speed | High | Institutional-grade | Very high |
Volume | Highest | Stable high | Rapid-growing |
6. Revenue Models
Polymarket. Officially no trading fees. Actual revenue likely derives from:
• spread design
• market creation incentives
• liquidity routing
• future premium features
• and (upcoming) token utilities
Kalshi. Revenue from trading commissions.
Estimated Q1–Q2 2025 revenue: ~15.2M USD in 3 months.
Opinion. DefiLlama reports: 18M USD in cumulative revenue.
Prediction Markets (Kalshi, Polymarket, Opinion, Limitless, Myriad)
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7. Strategic directions for the leading platforms. Prediction markets are maturing, and each major platform is now moving along a distinct strategic arc. Their next steps will define how the sector evolves over the coming years.
7.1. Polymarket’s dual-track expansion. Polymarket is simultaneously scaling its global onchain product while building a compliant US presence. The onchain version continues to prioritize speed, liquidity depth and cultural reach, with new markets appearing almost instantly as news moves. Parallel to this, the QCX acquisition lays the groundwork for long-term regulated operations in the United States.
A future token will introduce incentives for traders, analysts and builders, turning Polymarket into a full ecosystem rather than a single trading venue.
7.2. Kalshi’s institutional growth path. Kalshi is consolidating itself as the institutional standard for event contracts. Its roadmap revolves around expanding the set of CFTC-approved markets, strengthening API integrations with professional trading tools and attracting liquidity providers who prefer legal certainty. The platform’s clear regulatory position makes it the most predictable environment for large-scale financial entities.
7.3. Opinion’s velocity strategy. Opinion focuses on rapid execution and market responsiveness. New contracts appear almost as soon as trends form, and the platform’s infrastructure is optimized for fast settlement and high-frequency activity. With a user base concentrated in Asia and a deliberately opaque internal structure, Opinion is positioned to absorb speculative flow that seeks speed more than compliance.
8. Social Reputation as a new earning layer. In prediction markets, your presence on X/Twitter is becoming a practical way to earn. Platforms now use badges to identify reliable contributors and reward them through future incentives or token distributions. Below is a short and clear breakdown of how this works.
8.1. What Badges mean. Badges signal three things:
you are recognized by the platform
your activity brings value (trading, content or tools)
you are more likely to qualify for future rewards (airdrop, token, early access)
8.2. Polymarket badges. There are four major badges:
• Polymarket (team)
• Polymarket Traders
• Polymarket Builders
• PolyBaddies
Key statement from CMO: “Airdrop is for those who contributed collective intelligence.” Badges and consistent contribution are expected to heavily influence allocation.
8.3. Kalshi badges. Kalshi offers:
• team badge
• ecosystem contributor badge
Applications are open through the builder program.
8.4. How to realistically earn. There are three strategic avenues.
1. Trading + Activity. Active traders on Polymarket, Kalshi and Opinion are likely to receive future token or promotional allocations. Estimated earnings:
• active trader: 5k–15k USD+
• multi-platform user: even more, especially with arbitrage
2. X/Twitter Creator Strategy. Small accounts (<1000 followers) are already receiving badges. Consistency and high-quality commentary are more important than size.
3. Builders. The most profitable path long term. Examples:
• analytics dashboards
• liquidity bots
• volatility scanners
• Telegram/Discord agents
• price-movement alerts
Builder programs:
• https://builders.polymarket.com
• https://kalshi.com/builders
Build on Polymarket
Build apps, bots, and tools on Polymarket. Explore resources, apply for the program, and track top builders by volume.
9. KYC, Politics and the question of privilege
Polymarket global:
• no KYC
• non-US only
• CFTC forced them to block US users in 2022
Polymarket US (QCX):
• regulated
• invite-only beta
• long-term plan for US legal operation
Kalshi:
• strict KYC
• full US regulatory oversight
• all users are verified
Political angle. Because 1789 Capital is politically aligned and ICE has deep US regulatory ties, Polymarket likely benefits from political influence.
But regulatory environments can shift rapidly, especially around election cycles.
10. Final summary:
Polymarket. The cultural and liquidity leader. Confirmed token, strong institutional investors, powerful onchain ecosystem.
Kalshi. The regulated institutional backbone of US prediction markets. High trust, professional-grade architecture, and large open interest.
Opinion. A fast-scaling, semi-anonymous Asian liquidity magnet. High daily volumes despite minimal transparency.
Final thoughts. Prediction markets are no longer the fringe curiosity they once were. With billions in monthly flow, institutional investors entering the field, and the emergence of both fully regulated and fully onchain models, this sector is transforming into a new layer of global financial infrastructure.
Polymarket, Kalshi and Opinion each represent a different path forward.
Polymarket proves that onchain markets can scale to mainstream attention, media integration and cultural impact. Kalshi shows that prediction markets can fit neatly within the strictest US regulatory frameworks and still attract large volumes and high-confidence capital. Opinion demonstrates how aggressively a new entrant can capture liquidity when speed, incentives and distribution lines up.
What becomes clear is that prediction markets are evolving from speculative entertainment into a powerful form of probabilistic price discovery. They synthesize information, sentiment and data faster than traditional financial instruments, and in many cases offer a more accurate reflection of real-world expectations than polls, analysts or media.
The next cycle will likely be defined not only by incentives or airdrops, but by which platforms can bridge three worlds at once:
• the regulatory clarity required for institutions
• the open liquidity and transparency of onchain systems
• and the community-driven intelligence that makes prediction markets valuable in the first place
For traders, builders and analysts, this is one of the most asymmetric opportunity surfaces in crypto and fintech today.
The rails are still forming, the leaders are still solidifying, and the value networks around prediction markets are only beginning to emerge.
It is rare to watch a new market primitive crystallize in real time.
Prediction markets are becoming one of those moments.
Prepared by Colliseum