Best Free Finance APIs for Stock & Crypto Market Data in 2025: A Detailed Comparison

If you're building a Notion investment tracker, a crypto portfolio, or an automated trading tool, choosing the right finance API is crucial. But with so many options—Marketstack, Alpha Vantage, Financial Modeling Prep (FMP), and Yahoo Finance API (via RapidAPI)—which one is the best?

In this article, we compare the best free finance APIs for stock market data, real-time prices, forex, crypto, and fundamental analysis so you can pick the right one for your project.

What is a Finance API?

A finance API allows developers to access stock prices, crypto market data, forex rates, and financial reports through a simple request. These APIs are used for:

  • ✅ Investment tracking (e.g., Notion dashboards)
  • ✅ Algorithmic trading & backtesting
  • ✅ Crypto & forex market data
  • ✅ Fundamental stock analysis

Comparison: EODHD vs Marketstack vs. Alpha Vantage vs. Financial Modeling Prep vs. Yahoo Finance API

Let’s compare these free finance APIs based on data coverage, real-time access, pricing, and ease of use.

In this comparison, I have used these finance APIs:

1. Data Coverage & Features

Feature EODHD Marketstack Alpha Vantage Financial Modeling Prep Yahoo Finance API
Stock Market Data 60+ exchanges ✅ 60+ exchanges ✅ US & global stocks ✅ US ✅ Global stock data
Real-time Data ✅ Available (delayed 15 minutes) ❌ Available (only premium) ❌ Available (only premium) ❌ Available (only premium) ✅ Available (free & paid)
Historical Data ✅ Up to 30 years ✅ Up to 30 years ✅ Long-term data ✅ 5 years free account (30+ premium) ✅ Comprehensive historical data
Forex & Crypto ✅ Includes forex & crypto ❌ No forex or crypto ✅ Includes forex & crypto ✅ Includes forex & crypto ✅ Includes forex & crypto
Batch Requests ✅ Supported ✅ Supported ❌ No (premium only) ✅ Supported ✅ Supported

Exchange Market Support Comparison

Stock Exchange EODHD Marketstack Alpha Vantage Financial Modeling Prep Yahoo Finance API
NYSE (New York, US) ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
NASDAQ (US) ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
London Stock Exchange (LSE, UK) ✅ Yes ✅ Yes ✅ Yes ❌ No (Premium only) ✅ Yes
Euronext (Europe) ✅ Yes ✅ Yes ✅ Yes ❌ No (Premium only) ✅ Yes
Toronto Stock Exchange (TSX, Canada) ✅ Yes ✅ Yes ✅ Yes ❌ No (Premium only) ✅ Yes
India NSE & BSE ✅ Yes ✅ Yes ✅ Yes ❌ No (Premium only) ✅ Yes
Shanghai Stock Exchange (SSE, China) ✅ Yes ✅ Yes ✅ Yes ❌ No (Premium only) ✅ Yes
Shenzhen Stock Exchange (SZSE, China) ✅ Yes ✅ Yes ✅ Yes ❌ No (Premium only) ✅ Yes
Hong Kong Stock Exchange (HKEX) ❌ No ✅ Yes ✅ Yes ❌ No (Premium only) ✅ Yes
Tokyo Stock Exchange (TSE, Japan) ❌ No ✅ Yes ❌ No ❌ No (Premium only) ✅ Yes
Australia (ASX) ✅ Yes ❌ No ❌ No ❌ No (Premium only) ✅ Yes
Cryptocurrency Markets ✅ Yes ❌ No ✅ Yes ✅ Yes ✅ Yes
Forex (Currency Pairs) ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes

2. Free Plans & Pricing

Plan Type EODHD Marketstack Alpha Vantage Financial Modeling Prep Yahoo Finance API
Free Tier ✅ 20 requests/day ✅ 100 requests/month ✅ 25 requests/day ✅ 250 requests/day ✅ 500 requests/month
Paid Plans ✅ From $19.99/month ✅ From $8.99/month ✅ From $49.99/month ✅ From $19/month ✅ From $10/month

3. Which API is Best for Your Project?

Use Case Best API
Building investment tracker (US market) ✅ Financial Modeling Prep
Building investment tracker (EU market) ✅ EODHD / Marketstack
Building investment tracker (Global market) ✅ Yahoo Finance API (via RapidAPI)
Live stock price updates ✅ Alpha Vantage (real-time & indicators)

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Conclusion: Which Finance API Should You Choose?

  • For fundamental stock analysis (US) → Use Financial Modeling Prep
  • For fundamental stock analysis (EU) → Use EODHD or Marketstack
  • For historical stock data → Use EODHD or Marketstack
  • For real-time stock prices & forex → Use Alpha Vantage

🚀 Are you looking to track finance data? Check out Note API Connector to connect APIs with Notion easily.

Feel free to share your thoughts by leaving a comment or reaching out directly at [email protected] . Let's make managing your investments in Notion even better—together. 🚀

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