IEX Cloud (Discontinued) VS Tradier
Head-to-head market data API comparison.
UPDATED 2026-05-24 · 7 axes scored
WINNER · TRADIER · 3/7 AXES
Quick Decision
▶ PICK IEX CLOUD (DISCONTINUED) IF DATA-API
- Historical reference only
▶ PICK TRADIER IF DATA-API
- US options traders
- Retail algo traders
- Commission-free trading bots
- Options analytics apps
Side-by-Side Matrix
| METRIC | IEX CLOUD (DISCONTINUED) | TRADIER |
|---|---|---|
| API Quality | 3/5 | 4/5 |
| Doc Quality | 3/5 | 4/5 |
| Data Latency | second | second |
| SDK Languages | 5 languages | 3 languages |
| Free Tier | No | Yes |
| Affiliate Program | No | Yes |
| Asset Coverage Breadth | 5 classes | 5 classes |
| Asset Coverage | US Equities · US Options · Crypto · Forex · Commodities | US Equities · US Options · ETFs · Futures · Micro Futures |
| Historical Depth | Service discontinued | 10+ years (daily OHLCV); 1-min intraday on paid |
| Starting Price | N/A | $0/mo |
| Rate Limits | Service discontinued | Generous; no published hard limits on Developer plan |
Asset Class Coverage
Where the two providers overlap and where each has unique coverage.
| ASSET CLASS | IEX CLOUD (DISCONTINUED) | TRADIER |
|---|---|---|
| Commodities | ✓ Covered | — |
| Crypto | ✓ Covered | — |
| ETFs | — | ✓ Covered |
| Forex | ✓ Covered | — |
| Futures | — | ✓ Covered |
| Micro Futures | — | ✓ Covered |
| US Equities | ✓ Covered | ✓ Covered |
| US Options | ✓ Covered | ✓ Covered |
| TOTAL CLASSES | 5 | 5 |
Only IEX Cloud (Discontinued)
Crypto · Forex · Commodities
Only Tradier
ETFs · Futures · Micro Futures
Shared · 2
US Equities · US Options
Pricing Tier Map
Full tier ladder side-by-side · names and prices as published by each provider · 1 vs 3 tiers.
IEX CLOUD (DISCONTINUED) · 1 TIERS
01
Discontinued N/A
IEX Cloud shut down on August 31, 2024
TRADIER · 3 TIERS FREE TIER
01
Lite $0/mo
$0.35/trade stocks & options; $0.75/contract micro futures; no desktop app
02
Pro $10/mo
Commission-free stocks & equity/ETF options; $0.35 index options; $0.35/contract micro futures; full platform access
03
Pro Plus $35/mo
Commission-free stocks & equity/ETF options; $0.10 index options; $0.25/contract micro futures; full platform access
▲ Free Tier · Free sandbox: full API access on paper trading account
Technical Stack Fit
SDK languages and data formats determine integration cost for your existing codebase.
| DIMENSION | IEX CLOUD (DISCONTINUED) | TRADIER |
|---|---|---|
| API Types | REST · WebSocket · SDK | REST · WebSocket |
| SDK Languages | Python · JavaScript · Java · Go · Ruby | Python · JavaScript · Ruby |
| Data Formats | JSON | JSON · XML |
| Rate Limits | Service discontinued | Generous; no published hard limits on Developer plan |
| Latency Class | second | second |
Fit Profile
IEX CLOUD (DISCONTINUED) · PROFILE DATA-API
Best For
- Historical reference only
Not Ideal For
- Any new project — service is shut down
Full IEX Cloud (Discontinued) Review
TRADIER · PROFILE DATA-API
Best For
- US options traders
- Retail algo traders
- Commission-free trading bots
- Options analytics apps
Not Ideal For
- International markets
- Crypto
- Non-US exchanges
Full Tradier Review
Adjacent Comparisons
Related matchups — same category first, then cross-category for context.
IEX Cloud (Discontinued) vs DatabentoTradier vs DatabentoIEX Cloud (Discontinued) vs Polygon.io (now Massive)Tradier vs Polygon.io (now Massive)IEX Cloud (Discontinued) vs AlpacaTradier vs AlpacaIEX Cloud (Discontinued) vs FinnhubTradier vs FinnhubIEX Cloud (Discontinued) vs Alpha VantageTradier vs Alpha VantageIEX Cloud (Discontinued) vs Twelve DataTradier vs Twelve DataIEX Cloud (Discontinued) vs EODHD (EOD Historical Data)Tradier vs EODHD (EOD Historical Data)IEX Cloud (Discontinued) vs FinazonTradier vs Finazon