Alpaca's Trading API is rate-limited to 200 requests/minute per account in 2026, and that cap is identical for paper and live accounts — verified on 2026-05-2512. The Market Data API is a separate limit that scales with your data subscription: the free Basic plan (IEX feed) allows 200 requests/minute, while Algo Trader Plus ($99/month, full SIP feed) raises it to 10,000 requests/minute3. The single most-missed detail is that these are two independent ceilings — upgrading market data to 10,000/min does not lift the trading lane off 200/min. Compare Alpaca's limits against other brokers in the Broker API Comparator.
TL;DR
- Trading API: 200 requests/minute per account (paper and live are the same)12.
- Market Data (Basic, free, IEX): 200 requests/minute3.
- Market Data (Algo Trader Plus, $99/mo, SIP): 10,000 requests/minute3.
- Trading and market-data limits are independent ceilings; the market-data upgrade does not raise the trading lane.
- Geographic availability: US accounts fully supported; non-US tax residents vary by country, with paper-trading-only fallback where live is unavailable4.
The two independent rate limits
| Surface | Limit | Notes |
|---|---|---|
| Trading API | 200 req/min per account | Same for paper and live12 |
| Market Data - Basic (free, IEX) | 200 req/min | IEX feed only3 |
| Market Data - Algo Trader Plus (SIP) | 10,000 req/min | $99/month, all US exchanges3 |
All values verified on 2026-05-25123. The trading and market-data limits are tracked separately. A high-frequency data poller on Algo Trader Plus gets 10,000 market-data calls/min but is still capped at 200 order-and-account calls/min on the trading lane.
Paper and live share the trading limit
A common assumption is that paper trading gets a looser (or tighter) rate limit than live. It does not: the 200 requests/minute trading cap applies identically to paper and live accounts12. This is deliberate — Alpaca's whole pitch is paper-to-live parity, where the same endpoints and the same constraints carry over unchanged when you flip the base URL. Code that respects the limit in paper will respect it in live.
Market data: free IEX versus paid SIP
The free Basic plan serves the IEX feed only, which is a single exchange and a small slice of consolidated US volume, at 200 requests/minute3. The paid Algo Trader Plus tier ($99/month) serves the full SIP consolidated tape across all US exchanges and raises the market-data limit to 10,000 requests/minute3. For the research-versus-execution implications of IEX coverage, see Alpaca IEX vs SIP Free Tier 2026.
Geographic availability
Alpaca fully supports US accounts. For non-US users, availability varies by country of tax residence: where the country is supported, live trading is available; where it is not, the account is limited to paper trading4. Canada is not explicitly listed as a confirmed live-trading country on the public availability page, so non-US operators (including Canadian residents) should confirm eligibility with Alpaca support before building against the live API4. Alpaca covers US equities, options, and crypto; it does not offer forex or non-US global markets4.
Handling the limit in practice
- Use WebSocket for streaming, REST for actions. Polling quotes over REST burns the limit fast; subscribe to the data stream and reserve REST calls for orders and account reads.
- Pace the trading lane to 200/min. Build a token-bucket throttle around order submission and account polling specifically; the data limit is a separate budget.
- A 429 is recoverable. Exceeding the limit returns HTTP 429; back off and retry. Silent drops are not the failure mode here.
Compare Alpaca's 200/min trading lane against IBKR's pacing model and Tradier's 60/min trade scope in the Broker API Comparator below.
Verified figures
The 200/min trading limit, the paper-live parity, the Basic IEX 200/min and Algo Trader Plus 10,000/min market-data limits, the $99/month Algo Trader Plus price, and the geographic-availability model were verified on 2026-05-25. Where a country's specific live-trading eligibility was not explicitly published, it is described rather than asserted.
Connects to
- Alpaca IEX vs SIP Free Tier 2026: the free-feed coverage question.
- Alpaca vs Interactive Brokers API 2026: the multi-asset head-to-head.
- Alpaca vs Tradier API 2026: the options-broker head-to-head.
- Broker API Comparator: side-by-side rate limits.
References
Footnotes
-
Alpaca Markets. "Is there a usage limit for the number of API calls?" (Trading API 200 req/min per account). alpaca.markets/support, verified 2026-05-25. https://alpaca.markets/support/usage-limit-api-calls ↩ ↩2 ↩3 ↩4 ↩5
-
Alpaca Community Forum. "200/min trading endpoint limit" (paper and live parity). verified 2026-05-25. https://forum.alpaca.markets/t/is-there-a-way-to-increase-the-200-min-api-call-limit-for-the-trading-endpoint/18110 ↩ ↩2 ↩3 ↩4 ↩5
-
Alpaca Markets. "About Market Data API" (Basic IEX 200 req/min free; Algo Trader Plus $99/mo, all US exchanges, 10,000 req/min). docs.alpaca.markets, verified 2026-05-25. https://docs.alpaca.markets/us/docs/about-market-data-api ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8
-
Alpaca Markets. "Countries Alpaca is available" / "Is Alpaca available outside the US?" verified 2026-05-25. https://alpaca.markets/support/countries-alpaca-is-available ↩ ↩2 ↩3 ↩4
Verified engine output
Show the recompute-verified inputs and outputs
| require_free_tier | 1 |
|---|---|
| max_auth_complexity | 2 |
| filters › require options | false |
|---|---|
| filters › require futures | false |
| filters › require crypto | false |
| filters › require mcp | false |
| filters › require free tier | true |
| filters › max auth complexity | 2 |
| results › row 1 › broker › id | alpaca |
| results › row 1 › broker › name | Alpaca |
| results › row 1 › broker › url | https://alpaca.markets/ |
| results › row 1 › broker › docs url | https://alpaca.markets/docs/ |
| results › row 1 › broker › auth | API Key + Secret |
| results › row 1 › broker › auth complexity | 1 |
| results › row 1 › broker › order types (10 items) | [...] |
| results › row 1 › broker › rate limits | 200 req/min (free), higher on paid tiers |
| results › row 1 › broker › market data › row 1 | IEX real-time (free) |
| results › row 1 › broker › market data › row 2 | Full SIP on Algo Trader Plus ($99/mo) |
| results › row 1 › broker › market data › row 3 | Historical bars + trades + quotes |
| results › row 1 › broker › mcp | official |
| results › row 1 › broker › mcp note | Official MCP V2, 61 actions, idempotent order submission |
| results › row 1 › broker › assets › stocks | true |
| results › row 1 › broker › assets › options | true |
| results › row 1 › broker › assets › futures | false |
| results › row 1 › broker › assets › crypto | true |
| results › row 1 › broker › assets › forex | false |
| results › row 1 › broker › assets › bonds | false |
| results › row 1 › broker › account minimum | 0 |
| results › row 1 › broker › commission | $0 (PFOF on equities) |
| results › row 1 › broker › good for | Solo AI operator, paper-to-live parity |
| results › row 1 › broker › has free tier | true |
| results › row 1 › broker › notes › row 1 | Free paper trading with same API surface as live |
| results › row 1 › broker › notes › row 2 | Options require Algo Trader Plus tier |
| results › row 1 › broker › notes › row 3 | Python/Go SDKs mature; rate-limit backoff documented |
| results › row 1 › score | 2 |
| results › row 1 › max score | 2 |
| results › row 1 › fits | true |
| results › row 2 › broker › id | tradier |
| results › row 2 › broker › name | Tradier |
| results › row 2 › broker › url | https://tradier.com/ |
| results › row 2 › broker › docs url | https://developer.tradier.com/ |
| results › row 2 › broker › auth | OAuth 2.0 |
| results › row 2 › broker › auth complexity | 3 |
| results › row 2 › broker › order types (8 items) | [...] |
| results › row 2 › broker › rate limits | 120 req/min market data, 60 req/min trading |
| results › row 2 › broker › market data › row 1 | Real-time equities + options (streaming) |
| results › row 2 › broker › market data › row 2 | Historical OHLC back ~5 years |
| results › row 2 › broker › market data › row 3 | No Level-2 depth |
| results › row 2 › broker › mcp | community |
| results › row 2 › broker › mcp note | Community MCP; idempotency is a manual patch |
| results › row 2 › broker › assets › stocks | true |
| results › row 2 › broker › assets › options | true |
| results › row 2 › broker › assets › futures | false |
| results › row 2 › broker › assets › crypto | false |
| results › row 2 › broker › assets › forex | false |
| results › row 2 › broker › assets › bonds | false |
| results › row 2 › broker › account minimum | 0 |
| results › row 2 › broker › commission | $0 equities (PFOF), $0.35/contract options Pro |
| results › row 2 › broker › good for | Options-first retail, multi-leg strategies |
| results › row 2 › broker › has free tier | true |
| results › row 2 › broker › notes › row 1 | Free sandbox with delayed data |
| results › row 2 › broker › notes › row 2 | Strong options chain + multi-leg order API |
| results › row 2 › broker › notes › row 3 | US-only account eligibility |
| results › row 2 › score | 1 |
| results › row 2 › max score | 2 |
| results › row 2 › fits | false |
| results › row 2 › fail reasons › row 1 | Auth ≤ 2 |
| results › row 3 › broker › id | schwab |
| results › row 3 › broker › name | Schwab |
| results › row 3 › broker › url | https://www.schwab.com/ |
| results › row 3 › broker › docs url | https://developer.schwab.com/ |
| results › row 3 › broker › auth | OAuth 2.0 (3-legged) |
| results › row 3 › broker › auth complexity | 4 |
| results › row 3 › broker › order types (9 items) | [...] |
| results › row 3 › broker › rate limits | 120 req/min per endpoint (published tier) |
| results › row 3 › broker › market data › row 1 | Real-time equities + options quotes |
| results › row 3 › broker › market data › row 2 | Historical bars (1m to daily) |
| results › row 3 › broker › market data › row 3 | No exchange depth via API |
| results › row 3 › broker › mcp | none |
| results › row 3 › broker › mcp note | No official or listed community MCP server |
| results › row 3 › broker › assets › stocks | true |
| results › row 3 › broker › assets › options | true |
| results › row 3 › broker › assets › futures | true |
| results › row 3 › broker › assets › crypto | false |
| results › row 3 › broker › assets › forex | true |
| results › row 3 › broker › assets › bonds | true |
| results › row 3 › broker › account minimum | 0 |
| results › row 3 › broker › commission | $0 equities, $0.65/contract options |
| results › row 3 › broker › good for | Established retail, post-TDA API migration |
| results › row 3 › broker › has free tier | true |
| results › row 3 › broker › notes › row 1 | API rebuilt after TD Ameritrade integration; still maturing |
| results › row 3 › broker › notes › row 2 | Requires individual developer registration and app review |
| results › row 3 › broker › notes › row 3 | Token refresh flow is finicky vs Alpaca/Tradier |
| results › row 3 › score | 1 |
| results › row 3 › max score | 2 |
| results › row 3 › fits | false |
| results › row 3 › fail reasons › row 1 | Auth ≤ 2 |
| results › row 4 › broker › id | robinhood |
| results › row 4 › broker › name | Robinhood |
| results › row 4 › broker › url | https://robinhood.com/ |
| results › row 4 › broker › docs url | https://docs.robinhood.com/ |
| results › row 4 › broker › auth | OAuth 2.0 (unofficial endpoints) |
| results › row 4 › broker › auth complexity | 4 |
| results › row 4 › broker › order types › row 1 | market |
| results › row 4 › broker › order types › row 2 | limit |
| results › row 4 › broker › order types › row 3 | stop |
| results › row 4 › broker › order types › row 4 | stop-limit |
| results › row 4 › broker › order types › row 5 | gtc |
| results › row 4 › broker › order types › row 6 | ioc |
| results › row 4 › broker › rate limits | Not publicly documented; low throughput |
| results › row 4 › broker › market data › row 1 | Delayed quotes in public tier |
| results › row 4 › broker › market data › row 2 | Limited historical depth |
| results › row 4 › broker › market data › row 3 | No public Level-2 |
| results › row 4 › broker › mcp | none |
| results › row 4 › broker › mcp note | No MCP; unofficial SDKs only |
| results › row 4 › broker › assets › stocks | true |
| results › row 4 › broker › assets › options | true |
| results › row 4 › broker › assets › futures | false |
| results › row 4 › broker › assets › crypto | true |
| results › row 4 › broker › assets › forex | false |
| results › row 4 › broker › assets › bonds | false |
| results › row 4 › broker › account minimum | 0 |
| results › row 4 › broker › commission | $0 (PFOF), $5/mo Gold for margin + extras |
| results › row 4 › broker › good for | Casual retail; not recommended for agents |
| results › row 4 › broker › has free tier | true |
| results › row 4 › broker › notes › row 1 | No officially supported public API in 2026 |
| results › row 4 › broker › notes › row 2 | Community SDKs break on auth changes without notice |
| results › row 4 › broker › notes › row 3 | Paper trading unavailable |
| results › row 4 › score | 1 |
| results › row 4 › max score | 2 |
| results › row 4 › fits | false |
| results › row 4 › fail reasons › row 1 | Auth ≤ 2 |
| results › row 5 › broker › id | ibkr |
| results › row 5 › broker › name | Interactive Brokers |
| results › row 5 › broker › url | https://www.interactivebrokers.com/ |
| results › row 5 › broker › docs url | https://www.interactivebrokers.com/en/trading/ib-api.php |
| results › row 5 › broker › auth | OAuth + TWS/IB Gateway |
| results › row 5 › broker › auth complexity | 5 |
| results › row 5 › broker › order types (10 items) | [...] |
| results › row 5 › broker › rate limits | ~50 msg/sec per connection; 50 orders/sec burst |
| results › row 5 › broker › market data › row 1 | Global equities via subscription bundles |
| results › row 5 › broker › market data › row 2 | Level-2 depth on most exchanges |
| results › row 5 › broker › market data › row 3 | Historical depth across asset classes |
| results › row 5 › broker › mcp | community |
| results › row 5 › broker › mcp note | Community CLI MCP; audit before production |
| results › row 5 › broker › assets › stocks | true |
| results › row 5 › broker › assets › options | true |
| results › row 5 › broker › assets › futures | true |
| results › row 5 › broker › assets › crypto | true |
| results › row 5 › broker › assets › forex | true |
| results › row 5 › broker › assets › bonds | true |
| results › row 5 › broker › account minimum | 0 |
| results › row 5 › broker › commission | Tiered per-share or fixed; ~$0.0035/sh tiered |
| results › row 5 › broker › good for | Multi-asset-class, international, scale |
| results › row 5 › broker › has free tier | false |
| results › row 5 › broker › notes › row 1 | Requires TWS or IB Gateway running locally |
| results › row 5 › broker › notes › row 2 | Idempotency via client-supplied orderId |
| results › row 5 › broker › notes › row 3 | Fully headless gateway is possible but under-documented |
| results › row 5 › score | 0 |
| results › row 5 › max score | 2 |
| results › row 5 › fits | false |
| results › row 5 › fail reasons › row 1 | Free tier |
| results › row 5 › fail reasons › row 2 | Auth ≤ 2 |
| fitting brokers › row 1 › broker › id | alpaca |
| fitting brokers › row 1 › broker › name | Alpaca |
| fitting brokers › row 1 › broker › url | https://alpaca.markets/ |
| fitting brokers › row 1 › broker › docs url | https://alpaca.markets/docs/ |
| fitting brokers › row 1 › broker › auth | API Key + Secret |
| fitting brokers › row 1 › broker › auth complexity | 1 |
| fitting brokers › row 1 › broker › order types (10 items) | [...] |
| fitting brokers › row 1 › broker › rate limits | 200 req/min (free), higher on paid tiers |
| fitting brokers › row 1 › broker › market data › row 1 | IEX real-time (free) |
| fitting brokers › row 1 › broker › market data › row 2 | Full SIP on Algo Trader Plus ($99/mo) |
| fitting brokers › row 1 › broker › market data › row 3 | Historical bars + trades + quotes |
| fitting brokers › row 1 › broker › mcp | official |
| fitting brokers › row 1 › broker › mcp note | Official MCP V2, 61 actions, idempotent order submission |
| fitting brokers › row 1 › broker › assets › stocks | true |
| fitting brokers › row 1 › broker › assets › options | true |
| fitting brokers › row 1 › broker › assets › futures | false |
| fitting brokers › row 1 › broker › assets › crypto | true |
| fitting brokers › row 1 › broker › assets › forex | false |
| fitting brokers › row 1 › broker › assets › bonds | false |
| fitting brokers › row 1 › broker › account minimum | 0 |
| fitting brokers › row 1 › broker › commission | $0 (PFOF on equities) |
| fitting brokers › row 1 › broker › good for | Solo AI operator, paper-to-live parity |
| fitting brokers › row 1 › broker › has free tier | true |
| fitting brokers › row 1 › broker › notes › row 1 | Free paper trading with same API surface as live |
| fitting brokers › row 1 › broker › notes › row 2 | Options require Algo Trader Plus tier |
| fitting brokers › row 1 › broker › notes › row 3 | Python/Go SDKs mature; rate-limit backoff documented |
| fitting brokers › row 1 › score | 2 |
| fitting brokers › row 1 › max score | 2 |
| fitting brokers › row 1 › fits | true |
Computed live at build time.
Frequently asked questions
- What is the Alpaca trading API rate limit in 2026?
- 200 requests per minute per account on the Trading API. The cap is identical for paper and live accounts.
- Do Alpaca paper and live accounts have the same rate limit?
- Yes. The 200 requests/minute trading limit applies identically to paper and live accounts, consistent with Alpaca's paper-to-live parity design.
- What is the Alpaca market data API rate limit?
- The free Basic plan (IEX feed) allows 200 requests/minute. Algo Trader Plus ($99/month, full SIP feed) raises it to 10,000 requests/minute. The market-data limit is separate from the trading limit.
- Is Alpaca available in Canada in 2026?
- Alpaca availability varies by country of tax residence. Canada is not explicitly listed as a confirmed live-trading country on the public availability page; non-US users should confirm eligibility with Alpaca support, and unsupported countries are limited to paper trading.