IEX Cloud (Discontinued) VS Marketstack
Head-to-head market data API comparison.
UPDATED 2026-05-24 · 7 axes scored
WINNER · MARKETSTACK · 3/7 AXES
Quick Decision
▶ PICK IEX CLOUD (DISCONTINUED) IF DATA-API
- Historical reference only
▶ PICK MARKETSTACK IF DATA-API
- Web app developers
- Simple stock charts
- Basic portfolio apps
- Budget-conscious indie devs
Side-by-Side Matrix
| METRIC | IEX CLOUD (DISCONTINUED) | MARKETSTACK |
|---|---|---|
| API Quality | 3/5 | 3/5 |
| Doc Quality | 3/5 | 4/5 |
| Data Latency | second | minute |
| SDK Languages | 5 languages | 1 languages |
| Free Tier | No | Yes |
| Affiliate Program | No | Yes |
| Asset Coverage Breadth | 5 classes | 6 classes |
| Asset Coverage | US Equities · US Options · Crypto · Forex · Commodities | US Equities · Global Equities · ETFs · Global Indices · Bonds · Commodities |
| Historical Depth | Service discontinued | 30+ years (annual EOD); intraday on Professional+ |
| Starting Price | N/A | $0/mo |
| Rate Limits | Service discontinued | Free: 100/mo; Basic: 10k/mo; Pro: 100k/mo; Business: 500k/mo |
Asset Class Coverage
Where the two providers overlap and where each has unique coverage.
| ASSET CLASS | IEX CLOUD (DISCONTINUED) | MARKETSTACK |
|---|---|---|
| Bonds | — | ✓ Covered |
| Commodities | ✓ Covered | ✓ Covered |
| Crypto | ✓ Covered | — |
| ETFs | — | ✓ Covered |
| Forex | ✓ Covered | — |
| Global Equities | — | ✓ Covered |
| Global Indices | — | ✓ Covered |
| US Equities | ✓ Covered | ✓ Covered |
| US Options | ✓ Covered | — |
| TOTAL CLASSES | 5 | 6 |
Only IEX Cloud (Discontinued)
US Options · Crypto · Forex
Only Marketstack
Global Equities · ETFs · Global Indices · Bonds
Shared · 2
US Equities · Commodities
Pricing Tier Map
Full tier ladder side-by-side · names and prices as published by each provider · 1 vs 5 tiers.
IEX CLOUD (DISCONTINUED) · 1 TIERS
01
Discontinued N/A
IEX Cloud shut down on August 31, 2024
MARKETSTACK · 5 TIERS FREE TIER
01
Free $0/mo
100 req/mo, EOD only, 1-year history
02
Basic $9.99/mo
10,000 req/mo, intraday access, all asset types
03
Professional $49.99/mo
100,000 req/mo, real-time updates (sub-15min), commodities
04
Business $149.99/mo
500,000 req/mo, priority support
05
Enterprise Custom
Higher limits + SLA
▲ Free Tier · 100 requests/mo, EOD only, 1-year history
Technical Stack Fit
SDK languages and data formats determine integration cost for your existing codebase.
| DIMENSION | IEX CLOUD (DISCONTINUED) | MARKETSTACK |
|---|---|---|
| API Types | REST · WebSocket · SDK | REST |
| SDK Languages | Python · JavaScript · Java · Go · Ruby | REST-only (community Python wrappers exist) |
| Data Formats | JSON | JSON |
| Rate Limits | Service discontinued | Free: 100/mo; Basic: 10k/mo; Pro: 100k/mo; Business: 500k/mo |
| Latency Class | second | minute |
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
MARKETSTACK · PROFILE DATA-API
Best For
- Web app developers
- Simple stock charts
- Basic portfolio apps
- Budget-conscious indie devs
Not Ideal For
- Real-time HFT
- Tick-level analysis
- Options/futures traders
- Native SDK lovers
Full Marketstack Review
Adjacent Comparisons
Related matchups — same category first, then cross-category for context.
IEX Cloud (Discontinued) vs DatabentoMarketstack vs DatabentoIEX Cloud (Discontinued) vs Polygon.io (now Massive)Marketstack vs Polygon.io (now Massive)IEX Cloud (Discontinued) vs AlpacaMarketstack vs AlpacaIEX Cloud (Discontinued) vs FinnhubMarketstack vs FinnhubIEX Cloud (Discontinued) vs Alpha VantageMarketstack vs Alpha VantageIEX Cloud (Discontinued) vs Twelve DataMarketstack vs Twelve DataIEX Cloud (Discontinued) vs EODHD (EOD Historical Data)Marketstack vs EODHD (EOD Historical Data)IEX Cloud (Discontinued) vs FinazonMarketstack vs Finazon