Finding Value Bets

Real-time odds data is the base for any pricing analysis. Whether you’re a developer, an analyst or running an odds comparison product, you need prices from many bookmakers side by side, updated fast. With our Value Bets API, you get access to real-time odds from over 365 bookmakers, including industry leaders like Bet365 and SingBet. This guide walks through how to use the API to find prices above a fair-odds estimate.

What Is a Value Bet?

A value bet is a price above a fair-odds estimate for the outcome. Measured against that estimate, the price has positive expected value (EV). Spotting these bets manually is difficult and time-consuming. The Value Bets API does it for you by comparing live odds against a fair-odds estimate and returning the outcomes with positive EV.

How the Value Bets API Works

Our system scans live odds across more than 365 trusted bookmakers worldwide. It calculates the expected value for each price and filters out anything without a clear gap to the fair-odds estimate.

Real-Time API Example

With a simple API call, you can retrieve value bets for any bookmaker. For example, to get value bets from Bet365:

https://api.odds-api.io/v3/value-bets?apiKey=YOUR_API_KEY&bookmaker=Bet365&includeEventDetails=true

This will return live value bets from Bet365, complete with event info, odds, market type, and EV percentage.

curl "https://api.odds-api.io/v3/value-bets?apiKey=YOUR_API_KEY&bookmaker=Bet365&includeEventDetails=true"

const apiKey = process.env.ODDS_API_KEY;

const response = await fetch(
  `https://api.odds-api.io/v3/value-bets?apiKey=${apiKey}&bookmaker=Bet365&includeEventDetails=true`
);

const valueBets = await response.json();
console.log(valueBets);

import requests
import os

api_key = os.environ['ODDS_API_KEY']

response = requests.get(
    'https://api.odds-api.io/v3/value-bets',
    params={
        'apiKey': api_key,
        'bookmaker': 'Bet365',
        'includeEventDetails': True
    }
)

value_bets = response.json()
print(value_bets)

<?php
$apiKey = getenv('ODDS_API_KEY');

$url = 'https://api.odds-api.io/v3/value-bets?' . http_build_query([
    'apiKey' => $apiKey,
    'bookmaker' => 'Bet365',
    'includeEventDetails' => true
]);

$response = file_get_contents($url);
$valueBets = json_decode($response, true);
print_r($valueBets);

Example Response

Let’s say the API returns a bet on the away team, Manisa Futbol Kulubu, with an expected value of 110.73%. That means the price sits above the fair-odds estimate.

{
  "id": "63628875-Spread-away-Bet365--1",
  "expectedValue": 110.73,
  "expectedValueUpdatedAt": "2025-09-16T11:33:06.615Z",
  "betSide": "away",
  "market": {
    "name": "Spread",
    "hdp": -1,
    "home": "2.491",
    "away": "1.671",
    "max": 150
  },
  "bookmaker": "Bet365",
  "bookmakerOdds": {
    "home": "1.950",
    "away": "1.850",
    "hdp": "-1",
    "href": "https://www.bet365.com/#/AC/B1/C1/D8/E181348466/F3/"
  },
  "eventId": 63628875,
  "event": {
    "home": "Kirikkale FK",
    "away": "Manisa Futbol Kulubu",
    "date": "2025-09-16T12:30:00Z",
    "sport": "Football",
    "league": "Turkiye - Turkiye Kupasi"
  }
}

Understanding the Response

Field	Description	Example
`expectedValue`	The calculated EV as a percentage	110.73% means the bet offers 110.73% value
`betSide`	Which outcome has value	”away”, “home”, “over”, “under”
`market.name`	The betting market	”Spread”, “ML”, “Totals”
`bookmakerOdds`	Current odds at the bookmaker	Bet365 offers 1.850 for away
`event`	Match details	Teams, date, sport, league

An expected value of 110.73% means the bookmaker’s price is 10.73% above the fair-odds estimate for that outcome.

Filtering High-Value Bets

Here’s how to filter and sort value bets by expected value:

// Filter bets with at least 5% expected value
const highValueBets = valueBets
  .filter(bet => bet.expectedValue >= 5)
  .sort((a, b) => b.expectedValue - a.expectedValue);

// Display the top 5 value bets
highValueBets.slice(0, 5).forEach((bet, index) => {
  console.log(`\n#${index + 1} Value Bet:`);
  console.log(`Match: ${bet.event.home} vs ${bet.event.away}`);
  console.log(`League: ${bet.event.league}`);
  console.log(`Market: ${bet.market.name}`);
  console.log(`Bet on: ${bet.betSide}`);
  console.log(`Odds: ${bet.bookmakerOdds[bet.betSide]}`);
  console.log(`Expected Value: ${bet.expectedValue.toFixed(2)}%`);
  console.log(`Bookmaker: ${bet.bookmaker}`);
  console.log(`Place bet: ${bet.bookmakerOdds.href}`);
});

Output:

#1 Value Bet:
Match: Kirikkale FK vs Manisa Futbol Kulubu
League: Turkiye - Turkiye Kupasi
Market: Spread
Bet on: away
Odds: 1.850
Expected Value: 110.73%
Bookmaker: Bet365
Place bet: https://www.bet365.com/#/AC/B1/C1/D8/E181348466/F3/

Monitoring Multiple Bookmakers

To cover more of the market, monitor value bets across multiple bookmakers:

const bookmakers = ['Bet365', 'SingBet', 'Unibet', 'William Hill', 'DraftKings'];

async function getAllValueBets() {
  const apiKey = process.env.ODDS_API_KEY;

  const promises = bookmakers.map(bookmaker =>
    fetch(
      `https://api.odds-api.io/v3/value-bets?apiKey=${apiKey}&bookmaker=${bookmaker}&includeEventDetails=true`
    ).then(res => res.json())
  );

  const results = await Promise.all(promises);

  // Combine all value bets
  const allBets = results.flat();

  // Filter for minimum 5% EV and sort by EV
  const topBets = allBets
    .filter(bet => bet.expectedValue >= 5)
    .sort((a, b) => b.expectedValue - a.expectedValue);

  return topBets;
}

const valueBets = await getAllValueBets();
console.log(`Found ${valueBets.length} value bets across all bookmakers`);

Real-World Use Case: Automated Alerts

Build an automated system that alerts you when high-value bets appear:

class ValueBetMonitor {
  constructor(apiKey, minEV = 5) {
    this.apiKey = apiKey;
    this.minEV = minEV;
    this.bookmakers = ['Bet365', 'SingBet', 'Unibet'];
    this.notifiedBets = new Set();
  }

  async checkForValueBets() {
    for (const bookmaker of this.bookmakers) {
      try {
        const response = await fetch(
          `https://api.odds-api.io/v3/value-bets?apiKey=${this.apiKey}&bookmaker=${bookmaker}&includeEventDetails=true`
        );

        const bets = await response.json();

        bets
          .filter(bet => bet.expectedValue >= this.minEV)
          .filter(bet => !this.notifiedBets.has(bet.id))
          .forEach(bet => {
            this.sendAlert(bet);
            this.notifiedBets.add(bet.id);
          });
      } catch (error) {
        console.error(`Error checking ${bookmaker}:`, error);
      }
    }
  }

  sendAlert(bet) {
    const message = `
🎯 Value Bet Alert!

${bet.event.home} vs ${bet.event.away}
${bet.event.league} | ${bet.event.sport}

Market: ${bet.market.name}
Bet on: ${bet.betSide.toUpperCase()}
Odds: ${bet.bookmakerOdds[bet.betSide]}
Expected Value: ${bet.expectedValue.toFixed(2)}%

Bookmaker: ${bet.bookmaker}
Place bet: ${bet.bookmakerOdds.href}
    `.trim();

    console.log(message);
    // Send via email, SMS, Telegram, etc.
  }

  start(intervalSeconds = 30) {
    console.log('Starting value bet monitor...');
    this.checkForValueBets(); // Initial check
    setInterval(() => this.checkForValueBets(), intervalSeconds * 1000);
  }
}

// Usage
const monitor = new ValueBetMonitor(process.env.ODDS_API_KEY, 5);
monitor.start(30); // Check every 30 seconds

Why Use Odds-API.io for Value Betting?

Here’s what sets us apart:

Real-Time Data

Odds updated with sub-150ms latency

365+ Bookmakers

Including Bet365, SingBet, William Hill, DraftKings, and more

34 Sports

Football, basketball, tennis, esports, and more

100+ Market Types

ML, spreads, totals, props, and specialized markets

99.9% Uptime

Our uptime target for the API

Developer-First

Clean JSON responses with full documentation

Get Started Free

Start with our free tier, no credit card needed, to test the API on recreational bookmakers. Value betting relies on sharp books and exchanges, which are available on paid plans. Need higher limits or additional features? Reach out for custom enterprise solutions with dedicated infrastructure and 24/7 support.

Get Started Free

Get started with Odds-API.io today

Frequently Asked Questions

What sports are included?

We cover football, basketball, tennis, baseball, esports, and more. 34 sports in total.

Can I filter value bets?

Yes, you can filter by bookmaker, sport, and league. You can also set your own minimum expected value threshold.

How fast is the data?

Odds are updated in real time, with average latency under 150 milliseconds. Value bets are recalculated every 5 seconds.

How is expected value calculated?

We analyze odds from all available bookmakers to calculate the true market probability, then compare each bookmaker’s odds to identify value opportunities.

What bookmakers are supported?

Over 365 bookmakers worldwide, including Bet365, SingBet, Unibet, William Hill, DraftKings, FanDuel, and many more.

Next Steps

API Reference

Explore the full Value Bets API documentation

Value Bets Guide

Learn advanced value betting strategies

Best Practices

Optimize your API usage and implementation

Quickstart

Get started with your first API call

Getting Started

Guides

Examples

What Is a Value Bet?

How the Value Bets API Works

Real-Time API Example

Example Response

Understanding the Response

Filtering High-Value Bets

Monitoring Multiple Bookmakers

Real-World Use Case: Automated Alerts

Why Use Odds-API.io for Value Betting?

Real-Time Data

365+ Bookmakers

34 Sports

100+ Market Types

99.9% Uptime

Developer-First

Get Started Free

Get Started Free

Frequently Asked Questions

Next Steps

API Reference

Value Bets Guide

Best Practices

Quickstart

​What Is a Value Bet?

​How the Value Bets API Works

​Real-Time API Example

​Example Response

​Understanding the Response

​Filtering High-Value Bets

​Monitoring Multiple Bookmakers

​Real-World Use Case: Automated Alerts

​Why Use Odds-API.io for Value Betting?

Real-Time Data

365+ Bookmakers

34 Sports

100+ Market Types

99.9% Uptime

Developer-First

​Get Started Free

Get Started Free

​Frequently Asked Questions

​Next Steps

API Reference

Value Bets Guide

Best Practices

Quickstart

What Is a Value Bet?

How the Value Bets API Works

Real-Time API Example

Example Response

Understanding the Response

Filtering High-Value Bets

Monitoring Multiple Bookmakers

Real-World Use Case: Automated Alerts

Why Use Odds-API.io for Value Betting?

Get Started Free

Frequently Asked Questions

Next Steps