CryptoAPIComparison

Real-Time Crypto Price API - 2026 Comparison

Looking for live cryptocurrency prices? Here's a comparison of the best real-time APIs with WebSocket support.

Top Real-Time Price APIs

API Latency WebSocket Free Tier
Binance ~50ms Yes Unlimited
Coinbase ~80ms Yes Yes
OKX ~60ms Yes Yes
Kraken ~100ms Yes Limited
Bitstamp ~120ms Yes No
CoinAPI ~150ms Yes Limited

WebSocket Implementation Example

// Binance WebSocket - Multiple streams
const ws = new WebSocket('wss://stream.binance.com:9443/stream?streams=btcusdt@trade/ethusdt@trade');

ws.onmessage = (event) => {
    const { data } = JSON.parse(event.data);
    console.log(`Price: $${data.p}`);
};

// Coinbase WebSocket
const ws2 = new WebSocket('wss://ws-feed.exchange.coinbase.com');
ws2.onopen = () => {
    ws2.send(JSON.stringify({
        type: 'subscribe',
        product_ids: ['BTC-USD', 'ETH-USD'],
        channels: ['ticker']
    }));
};

When to Use Real-Time vs REST

Use WebSocket When:

  • Building trading platforms
  • Need sub-second price updates
  • High-frequency data needed
  • Real-time dashboards

Use REST When:

  • Simple price display
  • Scheduled updates OK
  • Lower traffic applications
  • Easier implementation