TRADINGDATACOMPARE
LIVE · 2026-05-27

EODHD (EOD Historical Data) VS Polygon.io (now Massive)

Head-to-head market data API comparison.
UPDATED 2026-05-27 · 7 axes scored

WINNER · POLYGON.IO (NOW MASSIVE) · 2/7 AXES

Quick Decision

▶ PICK EODHD (EOD HISTORICAL DATA) IF DATA-API
  • Fundamental analysts
  • Global backtesting
  • Multi-exchange coverage
  • Value/quant researchers
▶ PICK POLYGON.IO (NOW MASSIVE) IF DATA-API
  • Algo traders
  • Fintech app developers
  • Options traders
  • Crypto quants

Side-by-Side Matrix

METRIC EODHD (EOD HISTORICAL DATA) POLYGON.IO (NOW MASSIVE)
API Quality 4/5 4/5
Doc Quality 3/5 4/5
Data Latency minute tick
SDK Languages 4 languages 5 languages
Free Tier Yes Yes
Affiliate Program Yes No
Asset Coverage Breadth 7 classes 5 classes
Asset Coverage
Global Equities · US Equities · Forex · Crypto · ETFs · Indices · Bonds
US Equities · US Options · Forex · Crypto · Global Indices
Historical Depth US stocks from 1972 (daily); intraday 1-min from 2004; tick from 2008 2003–present (equities)
Starting Price $0/mo $0/mo
Rate Limits 100,000 req/day and 1,000 req/min on paid plans Free: 5/min; Starter: 15/min; Developer+: unlimited

Asset Class Coverage

Where the two providers overlap and where each has unique coverage.

ASSET CLASS EODHD (EOD HISTORICAL DATA) POLYGON.IO (NOW MASSIVE)
Bonds ✓ Covered
Crypto ✓ Covered ✓ Covered
ETFs ✓ Covered
Forex ✓ Covered ✓ Covered
Global Equities ✓ Covered
Global Indices ✓ Covered
Indices ✓ Covered
US Equities ✓ Covered ✓ Covered
US Options ✓ Covered
TOTAL CLASSES 7 5
Only EODHD (EOD Historical Data)
Global Equities · ETFs · Indices · Bonds
Only Polygon.io (now Massive)
US Options · Global Indices
Shared · 3
US Equities · Forex · Crypto

Pricing Tier Map

Full tier ladder side-by-side · names and prices as published by each provider · 5 vs 4 tiers.

EODHD (EOD HISTORICAL DATA) · 5 TIERS FREE TIER
01
Free $0/mo
20 API calls/day, personal use, limited data
02
EOD All World $19.99/mo
EOD + splits/dividends, 100k req/day, 1k req/min ($199/yr)
03
All World Extended (EOD+Intraday) $29.99/mo
Adds 1-min intraday data on top of EOD ($299.90/yr)
04
Fundamentals Data Feed $59.99/mo
Stock/ETF/mutual fund fundamentals, 100k req/day ($599.90/yr)
05
ALL-IN-ONE Package $99.99/mo
EOD + Fundamentals + Calendar + Bonds bundle ($999.90/yr)
▲ Free Tier · Free plan: 20 API calls/day, limited endpoints, personal use
POLYGON.IO (NOW MASSIVE) · 4 TIERS FREE TIER
01
Stocks Basic $0/mo
EOD data, 5 calls/min
02
Stocks Starter $29/mo
15-min delayed data
03
Stocks Developer $79/mo
15-min delayed data, unlimited calls
04
Stocks Advanced $199/mo
Real-time data, WebSocket, full history
▲ Free Tier · Free tier (Stocks Basic): 5 API calls/min, EOD data only, no real-time

Technical Stack Fit

SDK languages and data formats determine integration cost for your existing codebase.

DIMENSION EODHD (EOD HISTORICAL DATA) POLYGON.IO (NOW MASSIVE)
API Types REST · WebSocket REST · WebSocket · SDK
SDK Languages Python · JavaScript · R · PHP Python · JavaScript · Go · Kotlin · Swift
Data Formats JSON · CSV JSON
Rate Limits 100,000 req/day and 1,000 req/min on paid plans Free: 5/min; Starter: 15/min; Developer+: unlimited
Latency Class minute tick

Fit Profile

EODHD (EOD HISTORICAL DATA) · PROFILE DATA-API

Best For

  • Fundamental analysts
  • Global backtesting
  • Multi-exchange coverage
  • Value/quant researchers

Not Ideal For

  • US tick data / HFT
  • Real-time streaming on budget plans
  • Crypto depth

Full EODHD (EOD Historical Data) Review
POLYGON.IO (NOW MASSIVE) · PROFILE DATA-API

Best For

  • Algo traders
  • Fintech app developers
  • Options traders
  • Crypto quants

Not Ideal For

  • Tick-level HFT (DBZ format not available)
  • Institutional order book depth

Full Polygon.io (now Massive) Review

Adjacent Comparisons

Related matchups — same category first, then cross-category for context.

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