TRADINGDATACOMPARE
LIVE · 2026-05-27

OANDA VS Polygon.io (now Massive)

Head-to-head market data API comparison.
UPDATED 2026-05-24 · 7 axes scored

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

Quick Decision

▶ PICK OANDA IF DATA-API
  • Forex algo traders
  • FX backtesting (deep history)
  • CFD automation
  • EA developers
▶ PICK POLYGON.IO (NOW MASSIVE) IF DATA-API
  • Algo traders
  • Fintech app developers
  • Options traders
  • Crypto quants

Side-by-Side Matrix

METRIC OANDA POLYGON.IO (NOW MASSIVE)
API Quality 4/5 4/5
Doc Quality 4/5 4/5
Data Latency tick tick
SDK Languages 3 languages 5 languages
Free Tier Yes Yes
Affiliate Program Yes No
Asset Coverage Breadth 4 classes 5 classes
Asset Coverage
Forex · CFDs · Commodities · Indices
US Equities · US Options · Forex · Crypto · Global Indices
Historical Depth 2001–present (FX tick and candle) 2003–present (equities)
Starting Price $0 $0/mo
Rate Limits 120 req/sec on REST; no stated limit on streaming Free: 5/min; Starter: 15/min; Developer+: unlimited

Asset Class Coverage

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

ASSET CLASS OANDA POLYGON.IO (NOW MASSIVE)
CFDs ✓ Covered
Commodities ✓ Covered
Crypto ✓ Covered
Forex ✓ Covered ✓ Covered
Global Indices ✓ Covered
Indices ✓ Covered
US Equities ✓ Covered
US Options ✓ Covered
TOTAL CLASSES 4 5
Only OANDA
CFDs · Commodities · Indices
Only Polygon.io (now Massive)
US Equities · US Options · Crypto · Global Indices
Shared · 1
Forex

Pricing Tier Map

Full tier ladder side-by-side · names and prices as published by each provider · 2 vs 4 tiers.

OANDA · 2 TIERS FREE TIER
01
Practice Account $0
Full API access on demo account
02
Live Account Spread-based
Live trading + full historical data API
▲ Free Tier · Free practice/demo account with full API access
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 OANDA POLYGON.IO (NOW MASSIVE)
API Types REST · WebSocket REST · WebSocket · SDK
SDK Languages Python · Java · JavaScript Python · JavaScript · Go · Kotlin · Swift
Data Formats JSON JSON
Rate Limits 120 req/sec on REST; no stated limit on streaming Free: 5/min; Starter: 15/min; Developer+: unlimited
Latency Class tick tick

Fit Profile

OANDA · PROFILE DATA-API

Best For

  • Forex algo traders
  • FX backtesting (deep history)
  • CFD automation
  • EA developers

Not Ideal For

  • Equities data
  • Crypto beyond CFDs
  • Non-FX asset classes

Full OANDA 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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