PropLine

Player props and prediction market odds across 54 sports

7.7 / 10GoodVerified

Football Basketball Baseball Hockey Soccer Tennis Golf MMA Esports Kalshi Markets Polymarket Markets

Starting Price$49

Free TierNo

Live DataYes

WebSocketYes

Commercial UseYes

Visit Website View Documentation

Overview

PropLine is a sports betting odds API specializing in player props across 54 sports and 25 sportsbooks, including prediction market exchanges like Kalshi, Polymarket, and Smarkets. The platform delivers structured prop market data, alternative lines, and live in-play odds for mainstream and emerging markets, making it a strong fit for betting apps, fantasy tools, and prediction market analytics platforms.

Pros

54 sports covered
Player props depth
Kalshi + Polymarket support
WebSocket streaming
Wide sportsbook coverage
Alternative lines + alternate markets

Cons

No free tier
Newer platform with smaller community
Higher starting price
Sportsbook-focused (no full team/match APIs)

Best For

Player prop appsPrediction market platformsSportsbook operatorsBetting analyticsKalshi/Polymarket integrations

Not Ideal For

Match result appsMulti-sport scoring platformsHobby projectsFree-tier-first teams

Specifications

REST APIYes

GraphQLNo

WebSocketYes

WebhooksYes

OpenAPI SpecYes

Player StatsYes

Team StatsYes

Odds DataYes

Historical Data3+ years of player prop and odds history

Request Limits50,000 requests/month (Starter) up to custom (Enterprise)

Commercial UseYes

RedistributionNo

White LabelYes

SDKs

PythonNode.jsPHP

Leagues

NFLNBAMLBNHLPremier LeagueLa LigaChampions LeagueATP+4

Last verified: 2026-08-20

Our Verdict

7.7/ 10

PropLine is a solid choice for player prop apps and prediction market platforms, with an overall score of 7.7/10. While it performs well in most areas, consider no free tier when making your decision.

Editorial: 7.8/10Benchmark: 7.6/10How we score →

Data verified: 2026-08-20

✓ Pricing checked✓ Coverage checked✓ Docs checked

Coverage

Sports Supported

FootballBasketballBaseballHockeySoccerTennisGolfMMAEsportsKalshi MarketsPolymarket Markets

Live DataYes

Historical Data3+ years of player prop and odds history

Player StatsYes

Team StatsYes

Odds DataYes

Leagues & Competitions

NFLNBAMLBNHLPremier LeagueLa LigaChampions LeagueATPUFCKalshiPolymarketSmarkets

12 leagues and competitions covered

Developer Experience

API Paradigms

✓REST

✗GraphQL

✓WebSocket

✓Webhooks

SDKs

PythonNode.jsPHP

Documentation

View Documentation →OpenAPI spec availableChangelog →Status Page →

Commercial Terms

✓Commercial use

✗Redistribution

✓White-label

Rate limit: 50,000 requests/month (Starter) up to custom (Enterprise)

Pricing Plans

Starter

$49/month

50,000 requests/month

Player props
10 sportsbooks
Live odds

Pro

$149/month

250,000 requests/month

All sportsbooks
Player props + game lines
Kalshi + Polymarket
WebSocket

Business

$399/month

1,000,000 requests/month

Everything
Priority support
Custom markets
White-label

Enterprise

$999/month

Custom

Custom SLA
Dedicated account manager
Historical data

Comparisons

PropLine vs The Odds API

PropLine specializes in player props across 54 sports, including exchanges like Kalshi and Polymarket. The Odds API focuses on mainstream odds comparison with cleaner documentation. Choose PropLine for player props, exchanges, and exotic markets; choose The Odds API for mainstream sportsbook odds and easier integration.