What are the best free alternatives to Twelve Data?

Top alternatives to Twelve Data include SiftingIO, Alpha Vantage, Finnhub. All of these endpoints belong to the finance category.

Are these Twelve Data alternatives free to use?

Yes, all featured alternative APIs offer verified free developer tiers or zero-authentication public endpoints on FreeAPI.

How can I test these alternative APIs?

You can test each alternative service interactively using ready-to-run cURL, Fetch, and Python snippets directly on FreeAPI.

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Top Twelve Data Alternatives & Similar APIs (2026)

Looking for alternatives to Twelve Data? Compare 8 verified free and public APIs in the finance category with rate limits, auth methods, and ready-to-use snippets.

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Alternatives Feature Comparison

8 Options

API Service	Auth Type	Rate Limit	CORS	Action
SiftingIO	Free Key	10,000 req/month (Free Tier)	HTTPS • CORS	Explore
Alpha Vantage	Free Key	5 req/min	HTTPS • CORS	Explore
Finnhub	Free Key	60 req/min	HTTPS • CORS	Explore
Yahoo Finance	Free Key	Variable	HTTPS • CORS	Explore
Polygon.io	Free Key	5 req/min	HTTPS • CORS	Explore
Tiingo	Free Key	500 req/hour	HTTPS • CORS	Explore
Marketstack	Free Key	100 req/month	HTTPS • CORS	Explore
Frankfurter	No Key (Zero-Auth)	Unlimited	HTTPS • CORS	Explore

Detailed Breakdown of Twelve Data Alternatives

GET

SiftingIO

Real-time and historical market data for US stocks, forex, crypto and commodities via REST and WebSocket. 25+ years of OHLCV history, watchlists and portfolio analytics.

Finans ve BorsaAPI KeyCORS10,000 req/month (Free Tier)

GET

Alpha Vantage

Real-time and historical stock market quotes, forex, and crypto time series

Finans ve BorsaAPI KeyCORS5 req/min

GET

Finnhub

Institutional-grade real-time market data, company fundamentals, and earnings

Finans ve BorsaAPI KeyCORS60 req/min

GET

Yahoo Finance

Global stock quotes, market data, currency rates, and financial news

Finans ve BorsaAPI KeyCORSVariable

GET

Polygon.io

Real-time and historical financial market data API for US stocks, options, forex, and crypto.

Finans ve BorsaAPI KeyCORS5 req/min

GET

Tiingo

Clean stock, crypto, and forex market data feeds and financial news

Finans ve BorsaAPI KeyCORS500 req/hour

GET

Marketstack

Global stock market ticker quotes, historical data, and index tracking

Finans ve BorsaAPI KeyCORS100 req/month

GET

Frankfurter

Open-source currency exchange rate API tracking the European Central Bank

Finans ve BorsaNo AuthCORSUnlimited

Choosing the Best Alternative to Twelve Data

Which alternative is quickest to start?

Alternatives labeled "Zero-Auth" do not require registration or API keys. You can swap your endpoint URL and test in minutes without creating provider accounts.

Are these alternatives free for production?

All listed alternatives offer legitimate free tiers or open data licenses. Review the specific rate limits on each API detail page to ensure your traffic stays within quota.