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
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