PropLine5.0 out of 5 stars |
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PropLine:
About
PropLine is a real-time sports betting odds API covering 110+ books and 70+ sports and leagues: US sportsbooks (DraftKings, FanDuel, BetMGM, Fanatics, Hard Rock, BetRivers), Pinnacle, DFS sites (PrizePicks, Underdog, Sleeper), prediction markets (Kalshi, Polymarket) and exchanges (Betfair, Smarkets, Novig, ProphetX). Every player prop is graded against the official box score: each Over/Under ships with won/lost/push/void plus the real stat. Five books stream in real time (about one second per line move). Pricing is per request, not per credit, and the response format is the-odds-api compatible, so switching is a base-URL change. Free tier: 1,000 requests/day, no card. Hobby $9/mo (5,000/day) unlocks every analytics feature: graded results, cross-book +EV, line history and opening/closing lines. Pro $19/mo (25,000/day) adds CSV exports; Streaming Lite $39/mo (250,000/day) and Streaming $79/mo (1M/day) add webhooks and a websocket. Python, Node, MCP and CLI SDKs.
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Underdog:
About
Underdog Fantasy is a daily fantasy sports platform that allows users to participate in a variety of game formats, including Best Ball drafts, Daily Drafts, and Pick’em contests, all centered around predicting player performance in real-world sporting events. Unlike traditional fantasy leagues, many of its formats are streamlined for speed and simplicity; for example, Best Ball contests automatically select a user’s highest-scoring players each week without requiring lineup management after the draft. It emphasizes quick entry and engagement, enabling users to draft teams or make picks in minutes while competing for cash prizes based on statistical outcomes. In Pick’em contests, users select whether players will perform higher or lower than projected stats, combining multiple picks for increased payouts. Underdog is designed as a skill-based, peer-style experience rather than a traditional sportsbook, where outcomes depend on athlete performance.
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PropLine:
Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Underdog:
Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Supported
iPad
Supported
Android
Supported
Chromebook
Not Supported
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PropLine:
Audience
Sports betting developers, quant/algo bettors, DFS tool builders, bet-tracker and odds-comparison apps, sports data engineers
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Underdog:
Audience
Sports fans and fantasy players who want a fast, simplified way to predict player performance and compete in flexible, skill-based contests for real-money prizes
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PropLine:
Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Underdog:
Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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PropLine:
API
Offers API
Supported
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Underdog:
API
Offers API
Not Supported
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PropLine:
Screenshots and Videos |
Underdog:
Screenshots and Videos |
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PropLine:
Pricing
$0 (free tier) / $9 per month
Free Version
Supported
Free Trial
Not Supported
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Underdog:
Pricing
Free
Free Version
Supported
Free Trial
Not Supported
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PropLine:
Reviews/
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Underdog:
Reviews/
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PropLine:
Pros & Cons from Real UsersPros
Cons
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PropLine:
Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Underdog:
Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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PropLine:
Company InformationPropLine
Founded: 2026
United States
prop-line.com
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Underdog:
Company InformationUnderdog
United States
www.underdogfantasy.com
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PropLine:
Alternatives |
Underdog:
Alternatives |
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PropLine:
Categories |
Underdog:
Categories |
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Underdog:
Integrations
Kalshi
Not Supported
Polymarket
Not Supported
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PropLine:
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Underdog:
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