Finnhub API vs Yahoo Finance API

Two free Finance APIs compared on access, reliability and developer ratings, using data from our daily health checks.

The verdict

Choose Finnhub API for its data: Real-Time RESTful APIs and Websocket for Stocks, Currencies, and Crypto.
Choose Yahoo Finance API if you want to call it from browser JavaScript.

	Finnhub API	Yahoo Finance API
What it does	Real-Time RESTful APIs and Websocket for Stocks, Currencies, and Crypto.	Real time low latency Yahoo Finance API for stock market, crypto currencies, and currency exchange.
Provider	Finnhub	yahoofinanceapi.com
API key	Required	Required
HTTPS	Yes	Yes
CORS (browser calls)	Unknown	Yes
Status today	Online · 797 ms	Last check failed
Uptime (30 days)	Up	Down
Developer rating	Not rated yet	Not rated yet
Price	Free / free tier	Free / free tier

Real-Time RESTful APIs and Websocket for Stocks, Currencies, and Crypto.

Finnhub - Free APIs for realtime stock, forex, and cryptocurrency. Company fundamentals, Economic data, and Alternative data.

Strengths

Real time low latency Yahoo Finance API for stock market, crypto currencies, and currency exchange.

Strengths

Prototyping or a tutorial? Pick the one that needs no API key (neither does, so compare their free tiers).
Calling from a web page? You need CORS. Otherwise route requests through your own server or a serverless function.
Going to production? Favour HTTPS, a strong uptime record and a provider with clear rate limits and terms. Check each API's docs before you commit.
Still unsure? Both are free to try: send one request to each and compare the data you get back.

Both require authentication (apiKey and apiKey).

Yahoo Finance API supports CORS, so front-end JavaScript can call it directly. Call the other from a server.