My Results from Researching Stock Market APIs

1 month ago 5

Did some research and testing out a few API here is what I found.

Feature Polygon Nasdaq Finnhub Prixe.io FMP

Free Tier	5 requests per min	2 requests per min	60 requests per min	60 requests per min	250 requests per day
Personal Use Paid Tier	$29/month	$15/month	$3000/month	$6/month	$19/month
Paid Tier Limits	Unlimited API calls w/ 15 min delay	500 requests per min	900 requests per min	600 requests per min	300 requests per min
Real-time Data	No	Yes	Yes	Yes	Yes
Historical Stock Data	Yes (5-year limit)	Yes	Yes	Yes	Yes (5-year limit)
WebSocket Support	Yes	No	Yes	Yes	Yes
Avg Response Time	58 ms	36 ms	100 ms	220 ms	94 ms