{
  "title": "Free stock API provider evidence snapshot",
  "page": "https://qveris.ai/guides/stock-api-free-comparison/",
  "verified_at": "2026-08-03",
  "method": "Six providers were compared under the same versioned criteria. Official plan, support, and documentation pages were checked, and applicable response checks were run twice. Plan values are not performance rankings. Provider terms can change.",
  "providers": [
    {
      "name": "Alpha Vantage",
      "free_model": "recurring free API key",
      "allowance": "25 requests per day",
      "market_data_note": "Official support states real-time and 15-minute delayed U.S. stock market data are premium-only.",
      "source": "https://www.alphavantage.co/support/",
      "verification": "verified"
    },
    {
      "name": "Marketstack",
      "free_model": "recurring free plan",
      "allowance": "100 requests per month",
      "market_data_note": "End-of-day data, one year of history, splits and dividends. Commercial use is listed on paid plans.",
      "source": "https://marketstack.com/pricing/",
      "verification": "verified"
    },
    {
      "name": "Alpaca",
      "free_model": "Basic trading API market-data plan",
      "allowance": "200 historical API calls per minute and 30 WebSocket symbols",
      "market_data_note": "Real-time U.S. equities from IEX; complete U.S. exchange coverage is on the paid plan.",
      "source": "https://docs.alpaca.markets/us/docs/about-market-data-api",
      "verification": "verified"
    },
    {
      "name": "Financial Modeling Prep",
      "free_model": "Basic recurring free plan",
      "allowance": "250 calls per day and 500 MB trailing 30-day bandwidth",
      "market_data_note": "End-of-day historical, profile, and reference data. Display or redistribution requires a specific agreement.",
      "source": "https://site.financialmodelingprep.com/pricing-plans",
      "verification": "verified"
    },
    {
      "name": "Massive",
      "free_model": "Stocks Basic",
      "allowance": "5 API calls per minute",
      "market_data_note": "Two years of history, end-of-day data, reference data and individual-use terms.",
      "source": "https://massive.com/pricing",
      "verification": "verified"
    },
    {
      "name": "Databento",
      "free_model": "one-time signup credit",
      "allowance": "$125 credit shared by the team and expiring after six months",
      "market_data_note": "Not a permanent recurring free tier. Historical and live data remain subject to usage pricing and licensing.",
      "source": "https://databento.com/docs/faqs/usage-pricing-and-data-credits",
      "verification": "verified"
    }
  ]
}