Nasdaq Data Link VS Polygon.io (now Massive)
Head-to-head market data API comparison.
UPDATED 2026-05-27 · 7 axes scored
Quick Decision
▶ PICK NASDAQ DATA LINK IF DATA-API
- Quant researchers
- Alternative data buyers
- Macro/fundamental analysts
- Academic researchers
▶ PICK POLYGON.IO (NOW MASSIVE) IF DATA-API
- Algo traders
- Fintech app developers
- Options traders
- Crypto quants
Side-by-Side Matrix
| METRIC | NASDAQ DATA LINK | POLYGON.IO (NOW MASSIVE) |
|---|---|---|
| API Quality | 3/5 | 4/5 |
| Doc Quality | 4/5 | 4/5 |
| Data Latency | daily | tick |
| SDK Languages | 5 languages | 5 languages |
| Free Tier | Yes | Yes |
| Affiliate Program | No | No |
| Asset Coverage Breadth | 6 classes | 5 classes |
| Asset Coverage | US Equities · Global Equities · Futures · Forex · Commodities · Alternative Data | US Equities · US Options · Forex · Crypto · Global Indices |
| Historical Depth | 50+ years on select datasets; varies widely | 2003–present (equities) |
| Starting Price | $0/mo | $0/mo |
| Rate Limits | Anonymous: 20 calls/10min, 50/day; Free w/ API key: 300/10s, 2,000/10min, 50,000/day; Premium: higher limits per dataset | Free: 5/min; Starter: 15/min; Developer+: unlimited |
Asset Class Coverage
Where the two providers overlap and where each has unique coverage.
| ASSET CLASS | NASDAQ DATA LINK | POLYGON.IO (NOW MASSIVE) |
|---|---|---|
| Alternative Data | ✓ Covered | — |
| Commodities | ✓ Covered | — |
| Crypto | — | ✓ Covered |
| Forex | ✓ Covered | ✓ Covered |
| Futures | ✓ Covered | — |
| Global Equities | ✓ Covered | — |
| Global Indices | — | ✓ Covered |
| US Equities | ✓ Covered | ✓ Covered |
| US Options | — | ✓ Covered |
| TOTAL CLASSES | 6 | 5 |
Only Nasdaq Data Link
Global Equities · Futures · Commodities · Alternative Data
Only Polygon.io (now Massive)
US Options · Crypto · Global Indices
Shared · 2
US Equities · Forex
Pricing Tier Map
Full tier ladder side-by-side · names and prices as published by each provider · 2 vs 4 tiers.
NASDAQ DATA LINK · 2 TIERS FREE TIER
01
Free $0/mo
Open datasets, limited premium access
02
Premium Custom
Institutional datasets, alternative data, bulk downloads
▲ Free Tier · Free: select open datasets; core financial data free with registration
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 | NASDAQ DATA LINK | POLYGON.IO (NOW MASSIVE) |
|---|---|---|
| API Types | REST · SDK | REST · WebSocket · SDK |
| SDK Languages | Python · R · JavaScript · Ruby · Excel | Python · JavaScript · Go · Kotlin · Swift |
| Data Formats | JSON · CSV · Excel | JSON |
| Rate Limits | Anonymous: 20 calls/10min, 50/day; Free w/ API key: 300/10s, 2,000/10min, 50,000/day; Premium: higher limits per dataset | Free: 5/min; Starter: 15/min; Developer+: unlimited |
| Latency Class | daily | tick |
Fit Profile
NASDAQ DATA LINK · PROFILE DATA-API
Best For
- Quant researchers
- Alternative data buyers
- Macro/fundamental analysts
- Academic researchers
Not Ideal For
- Real-time trading systems
- Tick data / HFT
- Crypto
- Intraday strategies
Full Nasdaq Data Link 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
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Related matchups — same category first, then cross-category for context.
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