Databento vs IEX Cloud (Discontinued)
Head-to-head market data API comparison. Updated 2026-05-23.
Overall winner: Databento — wins 4 of 7 comparison axes.
Side-by-Side Comparison
| Feature | Databento | IEX Cloud (Discontinued) |
|---|---|---|
| API Quality | 5/5 ✓ | 3/5 |
| Doc Quality | 5/5 ✓ | 3/5 |
| Data Latency | tick | second |
| SDK Languages | 6 languages ✓ | 5 languages |
| Free Tier | Yes ✓ | No |
| Affiliate Program | No | No |
| Asset Coverage Breadth | 5 asset classes | 5 asset classes |
| Asset Coverage | US Equities, US Futures, US Options, Crypto, FX | US Equities, US Options, Crypto, Forex, Commodities |
| Historical Depth | 2004–present (varies by dataset) | Service discontinued |
| Starting Price | From $0 | N/A |
| Rate Limits | No hard rate limits on historical; live feed by subscription tier | Service discontinued |
Databento: Best For
- Quant researchers
- HFT developers
- Backtesting engines
- Academic research
Not Ideal For
- Retail traders needing cheap real-time quotes
- Non-technical users
IEX Cloud (Discontinued): Best For
- Historical reference only
Not Ideal For
- Any new project — service is shut down
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