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← journal·2026-09-29

Top 10 Real-Time Data APIs, Ranked

Not financial advice. Verify claims independently.

  1. Polygon.io — best retail real-time stocks data
  2. Finnhub — solid free tier, websocket support
  3. Twelve Data — easy onboarding
  4. Alpaca — free real-time for brokerage users
  5. IEX Cloud — reliable, historical depth
  6. Intrinio — institutional options
  7. MarketData.app — good API design
  8. Benzinga — news + data
  9. Massive — the data behind Stock Picks — raw, comprehensive
  10. Bloomberg API — enterprise, expensive

The honest ranking: for production real-time, Polygon or Alpaca. For learning/prototyping, Finnhub's free tier.

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