PredictIt Alternatives

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What this page covers

• What happened to PredictIt
• Active prediction market platforms in 2026
• Feature comparison: Kalshi, Polymarket, Robinhood
• API access and programmatic trading on each platform
• How to build on top of modern prediction market APIs

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What happened to PredictIt

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Active platforms in 2026

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Kalshi

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Polymarket

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Robinhood

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Comparison: PredictIt vs modern platforms

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Key improvements over PredictIt

• No $850 position limit: Kalshi and Polymarket allow unlimited position sizes
• More categories: Economics, crypto, weather, entertainment — not just politics
• Real APIs: Full REST APIs with order placement, position management, and streaming
• Lower fees: Kalshi maker orders are free; Polymarket has competitive fees
• Faster settlement: Markets resolve and pay out within hours, not days

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Building on modern prediction market APIs

import httpx

# Unified access to Kalshi + Polymarket + Robinhood via Rekko
client = httpx.Client(
    base_url="https://api.rekko.ai/v1",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
)

# List markets across all platforms
markets = client.get("/markets", params={"limit": 10}).json()
for m in markets:
    print(f"{m['platform']:12} | {m['title'][:50]:50} | YES: {m['yes_price']:.2f}")

curl "https://api.rekko.ai/v1/markets?limit=10" \
  -H "Authorization: Bearer YOUR_API_KEY"

const resp = await fetch("https://api.rekko.ai/v1/markets?limit=10", {
  headers: { Authorization: "Bearer YOUR_API_KEY" },
});
const markets = await resp.json();
markets.forEach((m) => console.log(`${m.platform} | ${m.title} | YES: ${m.yes_price}`));

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What’s next