TRADINGDATACOMPARE
LIVE · 2026-05-27

Best for
Real-Time Market Data.

Applications requiring the lowest latency real-time streaming market data via WebSocket.

Ranked · Top 5

#1
Databento TOP PICK FREE TIER

Institutional-grade tick data with pay-as-you-go pricing

FROM From $0 API REST · WebSocket · SDK SDK Python · Rust · C++
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#2

Real-time and historical stock, options, forex, and crypto data — rebranded to Massive in 2026

FROM $0/mo API REST · WebSocket · SDK SDK Python · JavaScript · Go
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#3
Alpaca FREE TIER

Commission-free broker API with built-in market data

FROM $0/mo API REST · WebSocket · SDK SDK Python · JavaScript · Go
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#4
Finnhub FREE TIER

Free real-time stock API with news, sentiment, and fundamentals

FROM $0/mo API REST · WebSocket SDK Python · JavaScript · Go
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#5
Finazon FREE TIER

Modular market data marketplace — pay only for the feeds you need

FROM From $5/mo API REST · WebSocket SDK Python · Java · C#
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Cross-Reference

Databento vs Polygon.io (now Massive) Databento vs Alpaca Polygon.io (now Massive) vs Alpaca Polygon.io (now Massive) vs Finnhub Alpaca vs Finnhub Alpaca vs Finazon Finnhub vs Finazon

Other Use Cases

Best for Algo TradingBest for Crypto TradingBest for Forex TradingBest for BacktestingBest for Quant ResearchBest for Fintech App DevelopmentBest for BeginnersBest for Options TradingBest for Global EquitiesBest for Python DevelopersBest for JavaScript / Node.js DevelopersBest for Deep Historical DataBest for WebSocket StreamingBest for Free Tier OnlyBest for Budget Under $30/moBest for Institutional / EnterpriseBest for Active TradersBest for Options Trading (Brokers)Best for Global Multi-Asset BrokersBest for Brokers with API AccessBest for Prop Firms for BeginnersBest for Prop Firms for ForexBest for 1-Step Prop Firm ChallengesBest for Highest Prop Firm Profit Splits