Intrinio VS Polygon.io (now Massive)
Head-to-head market data API comparison.
UPDATED 2026-05-27 · 7 axes scored
WINNER · INTRINIO · 2/7 AXES
Quick Decision
▶ PICK INTRINIO IF DATA-API
- Funded startups
- Fintech apps needing SIP data
- Multi-language SDK requirements
- Institutional buyers
▶ PICK POLYGON.IO (NOW MASSIVE) IF DATA-API
- Algo traders
- Fintech app developers
- Options traders
- Crypto quants
Side-by-Side Matrix
| METRIC | INTRINIO | POLYGON.IO (NOW MASSIVE) |
|---|---|---|
| API Quality | 4/5 | 4/5 |
| Doc Quality | 4/5 | 4/5 |
| Data Latency | tick | tick |
| SDK Languages | 6 languages | 5 languages |
| Free Tier | Yes | Yes |
| Affiliate Program | No | No |
| Asset Coverage Breadth | 7 classes | 5 classes |
| Asset Coverage | US Equities · US Options · Global Indices · Mutual Funds · ETFs · Fundamentals · News | US Equities · US Options · Forex · Crypto · Global Indices |
| Historical Depth | Varies by product: EOD Stock Prices 50+ yrs, Fundamentals 15+ yrs, Estimates 20+ yrs, News up to 10 yrs | 2003–present (equities) |
| Starting Price | $0 | $0/mo |
| Rate Limits | Per-product (institutional SLA — contact sales) | Free: 5/min; Starter: 15/min; Developer+: unlimited |
Asset Class Coverage
Where the two providers overlap and where each has unique coverage.
| ASSET CLASS | INTRINIO | POLYGON.IO (NOW MASSIVE) |
|---|---|---|
| Crypto | — | ✓ Covered |
| ETFs | ✓ Covered | — |
| Forex | — | ✓ Covered |
| Fundamentals | ✓ Covered | — |
| Global Indices | ✓ Covered | ✓ Covered |
| Mutual Funds | ✓ Covered | — |
| News | ✓ Covered | — |
| US Equities | ✓ Covered | ✓ Covered |
| US Options | ✓ Covered | ✓ Covered |
| TOTAL CLASSES | 7 | 5 |
Only Intrinio
Mutual Funds · ETFs · Fundamentals · News
Only Polygon.io (now Massive)
Forex · Crypto
Shared · 3
US Equities · US Options · Global Indices
Pricing Tier Map
Full tier ladder side-by-side · names and prices as published by each provider · 6 vs 4 tiers.
INTRINIO · 6 TIERS FREE TIER
01
Free Trial $0
Time-limited trial on most products
02
EOD Stock Prices $3,100/year
50+ years of dividend & split-adjusted OHLC, 100% US exchanges
03
EquitiesEdge $1,250/mo
Real-time + historical equities bundle
04
OptionsEdge $1,250/mo
Options chains + Greeks
05
US Fundamentals $9,600/year
Standardized fundamentals data
06
Nasdaq Basic $9,000/year
Nasdaq Basic real-time
▲ Free Tier · Free trials available on most products; no permanent free tier
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 | INTRINIO | POLYGON.IO (NOW MASSIVE) |
|---|---|---|
| API Types | REST · WebSocket · SDK | REST · WebSocket · SDK |
| SDK Languages | Python · Ruby · JavaScript · Java · C# · PHP | Python · JavaScript · Go · Kotlin · Swift |
| Data Formats | JSON · CSV · Parquet | JSON |
| Rate Limits | Per-product (institutional SLA — contact sales) | Free: 5/min; Starter: 15/min; Developer+: unlimited |
| Latency Class | tick | tick |
Fit Profile
INTRINIO · PROFILE DATA-API
Best For
- Funded startups
- Fintech apps needing SIP data
- Multi-language SDK requirements
- Institutional buyers
Not Ideal For
- Indie devs
- Hobbyists
- Budget < $1k/mo
- Quick MVP prototyping
Full Intrinio 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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