AlpacaFree tier
Options Data APIs
Developer trading API with commission-free multi-leg options, paper trading and market data.
From $99/moDetails →
IVolatility
Historical and real-time options, futures and volatility data via API, plus IVolLive analytics.
From $63/mo
Visit IVolatility ↗Opens the official siteBest for
Quants who need deep historical volatility data
Notable features
- Historical options data
- Options APIs
- IVolLive analysis and backtest tools
- IVolAI
- Cloud VS Code workspace
Pricing notes
API Builder $63/mo billed annually; Quant $159; higher tiers listed.
Alternatives to IVolatility
Massive (formerly Polygon.io)Free tier
Options Data APIs
Market data APIs for options, stocks and more; polygon.io now redirects here.
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optionsDXFree tier
Options Data APIs
Historical options data downloads, including SPX chains, for backtesting.
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ThetaDataFree tier
Options Data APIs
Real-time and historical options, stock and index data with tick-level NBBO quotes.
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FlashAlphaFree tier
Volatility & GEX Tools
Options analytics API for GEX, DEX, vanna, charm, vol surfaces and max pain, with an MCP server.
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gexbotFree tier
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Live options analytics: GEX by OI and volume, classified levels and orderflow, with platform integrations.
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