Alpaca VS Tradier
Head-to-head market data API comparison.
UPDATED 2026-05-27 · 7 axes scored
Quick Decision
▶ PICK ALPACA IF DATA-API
- Retail algo traders
- Python quants
- Paper trading bots
- US equity automation
▶ PICK TRADIER IF DATA-API
- US options traders
- Retail algo traders
- Commission-free trading bots
- Options analytics apps
▼ Skip both if
- International markets
Side-by-Side Matrix
| METRIC | ALPACA | TRADIER |
|---|---|---|
| API Quality | 4/5 | 4/5 |
| Doc Quality | 4/5 | 4/5 |
| Data Latency | second | second |
| SDK Languages | 4 languages | 3 languages |
| Free Tier | Yes | Yes |
| Affiliate Program | No | Yes |
| Asset Coverage Breadth | 3 classes | 5 classes |
| Asset Coverage | US Equities · US Options · Crypto | US Equities · US Options · ETFs · Futures · Micro Futures |
| Historical Depth | 7+ years (minute bars); limited tick | 10+ years (daily OHLCV); 1-min intraday on paid |
| Starting Price | $0/mo | $0/mo |
| Rate Limits | Free: 200 req/min; Algo Trader Plus: up to 10,000 req/min | Generous; no published hard limits on Developer plan |
Asset Class Coverage
Where the two providers overlap and where each has unique coverage.
| ASSET CLASS | ALPACA | TRADIER |
|---|---|---|
| Crypto | ✓ Covered | — |
| ETFs | — | ✓ Covered |
| Futures | — | ✓ Covered |
| Micro Futures | — | ✓ Covered |
| US Equities | ✓ Covered | ✓ Covered |
| US Options | ✓ Covered | ✓ Covered |
| TOTAL CLASSES | 3 | 5 |
Only Alpaca
Crypto
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 · 2 vs 3 tiers.
ALPACA · 2 TIERS FREE TIER
01
Free $0/mo
Real-time IEX data + paper trading
02
Algo Trader Plus $99/mo
SIP real-time data + unlimited API calls
▲ Free Tier · Free tier: real-time IEX feed, unlimited historical (15-min delay on SIP)
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 | ALPACA | TRADIER |
|---|---|---|
| API Types | REST · WebSocket · SDK | REST · WebSocket |
| SDK Languages | Python · JavaScript · Go · C# | Python · JavaScript · Ruby |
| Data Formats | JSON | JSON · XML |
| Rate Limits | Free: 200 req/min; Algo Trader Plus: up to 10,000 req/min | Generous; no published hard limits on Developer plan |
| Latency Class | second | second |
Fit Profile
ALPACA · PROFILE DATA-API
Best For
- Retail algo traders
- Python quants
- Paper trading bots
- US equity automation
Not Ideal For
- International markets
- Deep historical tick data
- Options analytics
Full Alpaca 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.
Alpaca vs DatabentoTradier vs DatabentoAlpaca vs Polygon.io (now Massive)Tradier vs Polygon.io (now Massive)Alpaca vs IEX Cloud (Discontinued)Tradier vs IEX Cloud (Discontinued)Alpaca vs FinnhubTradier vs FinnhubAlpaca vs Alpha VantageTradier vs Alpha VantageAlpaca vs Twelve DataTradier vs Twelve DataAlpaca vs EODHD (EOD Historical Data)Tradier vs EODHD (EOD Historical Data)Alpaca vs FinazonTradier vs Finazon