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Data as of (UTC+8)No stock prices · Not investment adviceEvery fact links to its source · unconfirmed items say To verify

Head-to-head · Alpha Vantage 5/5 · Massive 5/5 fields confirmed on vendor pages

Alpha Vantage vs Massive

Facts only, from each vendor's own pages. Which fits depends on your markets and whether you need to display data publicly.

FieldAlpha Vantagealphavantage.co · checked Massive (formerly Polygon.io)massive.com · checked
Pricing
Pricevendor-listed entry planFrom USD 49.99/month1From USD 49.99/month (premium tiers listed up to USD 249.99/month; higher-volume tiers also listed)Stocks Starter USD 29/month2Stocks Starter USD 29/month; Developer USD 79; Advanced USD 199 (individual use)Better: lowest
Free tieras described by the vendorFree API key; standard limit 25 requests per day3Stocks Basic USD 0: 5 API calls/minute, 2 years of history, end-of-day data4
Rights
Display / redistributionpublic display / redistributionLicence is for personal, non-commercial use unless agreed in writing; letting others access the data as part of a commercial activity counts as commercial use5Individual plans are labelled 'Individual use'; business use falls under separate business terms6
Coverage and tools
Asia / China coverageChina and Asia exchangesDocumentation shows sample tickers for Shanghai (.SHH) and Shenzhen (.SHZ)7Stock plans cover US stocks only8
Agent / MCP supportofficial MCP serverYes: official remote MCP server (mcp.alphavantage.co)9Yes: hosted MCP server at mcp.massive.com (OAuth)10

"Better: lowest" marks the lower listed monthly entry price, shown only when both prices are confirmed on the vendor's own pricing page, both are monthly USD prices and both list the vendor's own entry plan. It is not a rating. A single API page is indexed only when at least 4 of 5 fields are confirmed on the vendor's own pages, and price, free tier and display rights are among them. A head-to-head comparison needs all 5 fields confirmed for both APIs.

  1. Alpha Vantage, price: alphavantage.co/premium · checked
  2. Massive, price: massive.com/pricing · checked
  3. Alpha Vantage, free tier: alphavantage.co/premium · checked
  4. Massive, free tier: massive.com/pricing · checked
  5. Alpha Vantage, display / redistribution: alphavantage.co/terms_of_service · checked
  6. Massive, display / redistribution: massive.com/terms · checked
  7. Alpha Vantage, asia / china coverage: alphavantage.co/documentation · checked
  8. Massive, asia / china coverage: massive.com/pricing · checked
  9. Alpha Vantage, agent / mcp support: mcp.alphavantage.co · checked
  10. Massive, agent / mcp support: massive.com/docs/ai-tools/quickstart · checked