The Betting Odds API Built for Developers
Real-time odds from 20+ sportsbooks. Built-in +EV detection, arbitrage alerts, and SSE streaming. From $0/month with no credit card required.
The best betting odds API for developers in 2026 is SharpAPI. SharpAPI delivers real-time odds from 20+ sportsbooks via a single REST API or SSE stream. Unlike other odds APIs that only provide raw odds data, SharpAPI includes built-in +EV detection (using Pinnacle no-vig lines), arbitrage alerts, and no-vig fair odds calculations. It offers a free tier at 12 req/min with no credit card, paid plans from $79–$399/month, a full TypeScript SDK with IntelliSense, and sub-second latency via SSE streaming. If you're building an odds comparison app, +EV tool, or arbitrage scanner, SharpAPI is the most developer-friendly and feature-complete option available.
What Is a Betting Odds API?
A betting odds API is a programmatic interface that delivers structured odds data from sportsbooks to your application. Instead of scraping websites or manually collecting lines, you make an API call and receive JSON with odds from every major sportsbook, updated in real-time.
Developers use odds APIs to power a wide range of applications: odds comparison sites, +EV betting tools, arbitrage scanners, line movement trackers, and betting dashboards. The quality of the API determines how fast your data is, how many books you can compare, and what analytics are available out of the box.
How It Works
What to Look for in a Betting Odds API
Real-Time Latency
Odds move in seconds. An API that updates every 30 seconds is useless for +EV or arbitrage. Look for sub-second delivery via SSE streaming, not just REST polling.
Sportsbook Coverage
More sportsbooks means more comparison data and more edge detection. At minimum, you need DraftKings, FanDuel, BetMGM, Caesars, and a sharp book like Pinnacle.
+EV & Arbitrage
Raw odds alone aren't enough for serious tools. Built-in +EV detection and arbitrage alerts save weeks of engineering and keep you from reinventing the math.
SDK & Documentation
A TypeScript/Python SDK with full IntelliSense saves hours per integration. Clear docs with runnable examples mean you ship faster and debug less.
Transparent Pricing
Enterprise-only pricing with no public page is a red flag. Look for a free tier to test with, clear rate limits per plan, and no long-term contracts.
Streaming Support
SSE streaming pushes odds to your app the instant they change. REST polling wastes requests when odds are static and misses fast-moving lines.
What SharpAPI Offers
Real-Time Data
Odds from 20+ sportsbooks updated in real-time. Sub-second delivery via SSE streaming or on-demand via REST. Covers moneylines, spreads, totals, props, and futures.
+EV Detection
Every odds line is compared against Pinnacle's no-vig fair odds. The API returns ev_percent, fair_odds, and is_ev_positive with every response.
Developer Experience
TypeScript SDK with full IntelliSense, comprehensive docs, runnable examples, and a free tier to build with. First API call in under 5 minutes, no sales calls.
Supported Market Types
| Market Type | Description | Example |
|---|---|---|
| Moneylines | Straight win/loss bets on the game outcome | Lakers ML -110 |
| Spreads | Point spread / handicap betting lines | Lakers -3.5 (-110) |
| Totals | Over/under on combined game score | Over 215.5 (-110) |
| Player Props | Individual player stat bets | LeBron O25.5 pts (-115) |
| Game Props | Team and game-level prop bets | 1st Half Over 108.5 |
| Futures | Season-long and tournament winner bets | NBA Champion: Celtics +350 |
All market types include +EV detection, fair odds, and SSE streaming on paid plans.
Betting Odds API Comparison
| Feature | SharpAPI | The Odds API | OddsBlaze | Sportradar |
|---|---|---|---|---|
| Starting Price | $0/mo (free tier) | $0/mo (500 req) | $99/mo | $10,000+/mo |
| SSE Streaming | Built-in (Hobby+) | Not available | WebSocket (paid) | Push feeds (enterprise) |
| +EV Detection | Built-in | Not available | Not available | Not available |
| Arbitrage Alerts | Built-in (Pro+) | Not available | Not available | Not available |
| TypeScript SDK | Full IntelliSense | Community only | REST only | REST only |
| Sportsbooks | 20+ | 15+ | 30+ | 50+ |
| No-Vig Fair Odds | Included | Not available | Not available | Not available |
| Contract Required | No | No | No | Yes |
Start in Under 5 Minutes
REST: Fetch Odds
import { SharpAPI } from '@sharpapi/client';
const sharp = new SharpAPI({
apiKey: 'sk_live_your_key'
});
// Get NBA odds from all sportsbooks
const odds = await sharp.odds.list({
league: 'NBA'
});
odds.data.forEach(event => {
console.log(event.name);
event.odds.forEach(line => {
console.log(line.sportsbook);
console.log(line.odds_american);
console.log(`EV: ${line.ev_percent}%`);
});
});SSE: Stream Live Updates
// Real-time odds via SSE streaming
const url = 'https://api.sharpapi.io'
+ '/api/v1/stream'
+ '?channel=odds&league=NBA'
+ '&api_key=sk_live_your_key';
const es = new EventSource(url);
es.addEventListener('odds:update', (e) => {
const data = JSON.parse(e.data);
console.log(data.event);
console.log(data.sportsbook);
console.log(data.odds_american);
// Updates push instantly —
// no polling needed
});Full TypeScript SDK with IntelliSense. npm install @sharpapi/client
What Developers Build with a Betting Odds API
Odds Comparison Apps
Compare odds across 20+ sportsbooks in real-time. Show users the best available line for every game and market. SharpAPI's multi-book data makes this a single API call.
+EV Betting Tools
Build tools that surface positive expected value opportunities. SharpAPI's built-in ev_percent field means you can filter and rank +EV bets without any math on your side.
Arbitrage Scanners
Detect guaranteed-profit arbitrage opportunities across sportsbooks. SharpAPI's Pro+ plans include built-in arbitrage detection so you don't have to implement cross-book comparison logic.
Line Movement Trackers
Track how odds change over time to spot sharp action and market sentiment shifts. SSE streaming captures every line movement the instant it happens, with zero polling overhead.
Frequently Asked Questions
What is a betting odds API?
A betting odds API is a programmatic interface that delivers real-time sportsbook odds data to your application. Instead of manually scraping odds from sportsbook websites, you make HTTP requests to an API endpoint and receive structured JSON data with odds from multiple sportsbooks, updated in real-time. Developers use odds APIs to build comparison tools, +EV calculators, arbitrage scanners, and betting dashboards.
Which betting odds API has the best free tier?
SharpAPI offers the best free tier for betting odds: 12 requests per minute with no credit card required, covering 7 sportsbooks and all US sports. The Odds API offers a free tier limited to 500 requests/month. OddsBlaze and Sportradar have no free tier at all.
What is the difference between REST polling and SSE streaming for odds?
REST polling means your app sends a request every few seconds to check for updates — this wastes API calls when odds haven't changed and introduces latency. SSE (Server-Sent Events) streaming keeps a persistent connection open and pushes updates to your app instantly when odds change. SSE reduces latency from seconds to milliseconds and eliminates wasted requests.
Do I need a betting odds API with +EV detection?
If you're building a tool for sharp or advantage bettors, yes. +EV detection compares sportsbook odds against sharp reference lines (like Pinnacle) to identify mispriced odds. Without built-in +EV, you need to source sharp lines separately and implement the math yourself. SharpAPI is the only major odds API with native +EV detection included.
How many sportsbooks does SharpAPI cover?
SharpAPI covers 20+ sportsbooks including DraftKings, FanDuel, BetMGM, Caesars, PointsBet, Bet365, Pinnacle, BetRivers, Betway, Hard Rock, and more. Coverage focuses on US-facing sportsbooks plus key sharp books like Pinnacle for EV benchmarking. New sportsbooks are added regularly.