Best Finance Data API Products in 2026

Polygon.io offers streaming realtime data for stocks/equities, ETFs, Indecies and Forex/Currencies including crypto currencies. Our Real-Time Stock Data APIs help you build the future on fintech.

Key Polygon.io features:

Comprehensive Data Coverage Real-time Data Developer-friendly API Historical Data Access

The smarter way to buy, sell, and close real estate transactions.

Key Anyone.com features:

AI Agent Marketplace Easy Agent Creation Monetization Opportunities Diverse Use Cases

Visit website paid

Alpha Vantage offers free APIs in JSON and CSV formats for realtime and historical stock and forex data, digital/crypto currency data and over 50 technical indicators.

Key Alpha Vantage features:

Free Tier Comprehensive Data Ease of Use Real-time and Historical Data

Access all stocks discounted cash flow statements, market price, stock markets news, and learn more about Financial Modeling. Learn M&A, LBO, DCF, Comps, and Financial Statement Modeling thought concrete examples.

Key Financial Modeling Prep features:

Comprehensive Data User-Friendly Interface API Availability Affordability

The simplest and most effective way to access both realtime and historical stock, forex, cryptocurrency data, and over 100 technical indicators.

Key Twelve Data features:

Comprehensive Data Coverage Affordable Pricing Ease of Use High Scalability

Open Source

Finage is a next-generation market data feeds provider. We are providing 60.000+ financial data feeds in real-time and historical via APIs and WebSockets such as; Global Stock, Forex, Cryptocurrency, ETFs, Indices, and financial statements, and more.

Key Finage features:

Comprehensive Market Data User-Friendly API Global Coverage Scalability

freemium $49.0 / Monthly

Financial market data on-demand. Xignite financial Web services help build smarter websites and applications in minutes with zero up-front investment.

Key Xignite features:

Comprehensive Data Coverage Ease of Integration Scalability Reliable Data Delivery

Simple REST API for commission-free stock trading.

Key Alpaca Trading API features:

Commission-Free Trading API-First Platform Paper Trading Integration with Popular Platforms

Open Source

The first stock brokerage API company.

Key tradier features:

Low Commissions API Access Partner Network Customizable Trading Platform

Stock Market and Financial Data API.

Key FinancialData.net features:

Comprehensive Data Coverage User-Friendly Interface Customizable Data Feeds API Access

Open Source freemium

The reliable, enterprise API that powers IEX. Free for everyone.

Key IEX Developer Platform features:

Comprehensive Data Free Access Real-Time Updates Clear Documentation

Quandl is a platform for financial, economic, and alternative data, serving investment professionals.

Key Quandl features:

Comprehensive Data Data Accessibility User-Friendly Interface Quality of Data

Free fundamentals API for developers: income statements, balance sheets, cash flow statements, and key ratios with historical coverage.

Key Finqual.app features:

User-Friendly Interface Comprehensive Financial Tools Customization Options Data Security

freemium

The stock market API powered by SQL.

freemium $14.99 / Monthly