Financial Modeling Prep VS Polygon.io (now Massive)
Head-to-head market data API comparison.
UPDATED 2026-05-24 · 7 axes scored
Quick Decision
▶ PICK FINANCIAL MODELING PREP IF DATA-API
- Fundamentals research
- Budget-conscious devs
- Multi-asset portfolio apps
- DCF / valuation tools
- 13F institutional tracking
▶ PICK POLYGON.IO (NOW MASSIVE) IF DATA-API
- Algo traders
- Fintech app developers
- Options traders
- Crypto quants
Side-by-Side Matrix
| METRIC | FINANCIAL MODELING PREP | POLYGON.IO (NOW MASSIVE) |
|---|---|---|
| API Quality | 4/5 | 4/5 |
| Doc Quality | 4/5 | 4/5 |
| Data Latency | minute | tick |
| SDK Languages | 2 languages | 5 languages |
| Free Tier | Yes | Yes |
| Affiliate Program | No | No |
| Asset Coverage Breadth | 9 classes | 5 classes |
| Asset Coverage | US Equities · Global Equities · ETFs · Mutual Funds · Global Indices · Forex · Crypto · Commodities · Macroeconomic | US Equities · US Options · Forex · Crypto · Global Indices |
| Historical Depth | 5 years (free/Starter) to 30+ years (Premium+); 1-min intraday on Ultimate | 2003–present (equities) |
| Starting Price | $0/mo | $0/mo |
| Rate Limits | Free: 250/day; Starter: 300/min; Premium: 750/min; Ultimate: 3,000/min | Free: 5/min; Starter: 15/min; Developer+: unlimited |
Asset Class Coverage
Where the two providers overlap and where each has unique coverage.
| ASSET CLASS | FINANCIAL MODELING PREP | POLYGON.IO (NOW MASSIVE) |
|---|---|---|
| Commodities | ✓ Covered | — |
| Crypto | ✓ Covered | ✓ Covered |
| ETFs | ✓ Covered | — |
| Forex | ✓ Covered | ✓ Covered |
| Global Equities | ✓ Covered | — |
| Global Indices | ✓ Covered | ✓ Covered |
| Macroeconomic | ✓ Covered | — |
| Mutual Funds | ✓ Covered | — |
| US Equities | ✓ Covered | ✓ Covered |
| US Options | — | ✓ Covered |
| TOTAL CLASSES | 9 | 5 |
Only Financial Modeling Prep
Global Equities · ETFs · Mutual Funds · Commodities · Macroeconomic
Only Polygon.io (now Massive)
US Options
Shared · 4
US Equities · Global Indices · Forex · Crypto
Pricing Tier Map
Full tier ladder side-by-side · names and prices as published by each provider · 4 vs 4 tiers.
FINANCIAL MODELING PREP · 4 TIERS FREE TIER
01
Free $0/mo
250 calls/day, EOD only, 5-year history
02
Starter $22/mo
300 calls/min, US coverage, 5-year history, annual fundamentals
03
Premium $59/mo
750 calls/min, UK+Canada added, 30-year history, intraday, technicals
04
Ultimate $149/mo
3,000 calls/min, global coverage, 1-min intraday, 13F, transcripts, 150GB
▲ Free Tier · 250 calls/day, EOD only, 5-year history, 150+ endpoints
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 | FINANCIAL MODELING PREP | POLYGON.IO (NOW MASSIVE) |
|---|---|---|
| API Types | REST · SDK | REST · WebSocket · SDK |
| SDK Languages | Python (community) · JavaScript (community) | Python · JavaScript · Go · Kotlin · Swift |
| Data Formats | JSON | JSON |
| Rate Limits | Free: 250/day; Starter: 300/min; Premium: 750/min; Ultimate: 3,000/min | Free: 5/min; Starter: 15/min; Developer+: unlimited |
| Latency Class | minute | tick |
Fit Profile
FINANCIAL MODELING PREP · PROFILE DATA-API
Best For
- Fundamentals research
- Budget-conscious devs
- Multi-asset portfolio apps
- DCF / valuation tools
- 13F institutional tracking
Not Ideal For
- Real-time HFT
- Tick-level order book
- Sub-second latency requirements
Full Financial Modeling Prep 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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