Compare sports prediction market probabilites across Kalshi, Polymarket and sportsbooks
LineScout provides side-by-side probability context across Kalshi, Polymarket, sportsbooks, and model outputs.
Side-by-side market pricing
See Kalshi and Polymarket probabilities next to sportsbook consensus, without bouncing between tabs.
Probability,
not opinions
LineScout adds model probability so you can evaluate whether market price matches the underlying likelihood.
Jump to the
best venue
Open the venue offering the better price when the math is clear - and move on when it's not.
One board. Every price that matters.
Live contract prices from prediction markets, converted into implied probability. Shows where the market is actively trading in real time.
Aggregated sportsbook odds form a consensus probability baseline. Provides context for how traditional markets are pricing the same outcome.
An independent probability generated by LineScout’s proprietary models. Surfaces where market price aligns or diverges from the true likelihood.
What we get asked most
often from users.
LineScout is a sports prediction market intelligence platform. It compares live implied probabilities from Kalshi, Polymarket, sportsbook consensus, and a proprietary model in one dashboard so serious sports traders can spot mispriced markets and find edge without switching between tabs.
LineScout is neither. It provides probability and pricing intelligence, not picks, parlays, or betting advice. You bring the decision, LineScout brings the data to make it on.
LineScout currently covers NBA, college basketball (CBB) and MLB. Coverage updates in real time right up until tipoff.
No. LineScout never executes trades or takes custody of funds. When you find a setup worth acting on, LineScout links you directly to Kalshi or Polymarket to execute at the better-priced venue.
LineScout pulls live contract prices from both Kalshi and Polymarket, converts them to implied probability, and displays them side by side next to vig-free sportsbook consensus and a proprietary model probability. The divergence between venues is calculated automatically, no manual math, no tab switching.
The Scout Score is LineScout's market grading system. It evaluates each market based on the size and quality of the edge — factoring in divergence, venue consistency, and liquidity so you can quickly filter out noise and focus on setups that meet a real threshold.
Sportsbooks build a margin (the vig) into their odds, which inflates the implied probability. LineScout strips that margin out before displaying sportsbook consensus, so the comparison to Kalshi and Polymarket prices is apples-to-apples. Without removing the vig, you're comparing the wrong numbers.
LineScout is a data and intelligence platform, not a trading venue, and is available everywhere. The prediction market platforms it monitors (Kalshi and Polymarket) have their own state-level availability requirements.
LineScout is $99.99/month with full access to all live markets, real-time probability comparisons, model edge indicators, and Scout Score grading. No free trial.
LineScout is built for serious sports prediction market traders on Kalshi and Polymarket who want a systematic, data-driven process for finding edge. It is not built for casual fans or pick followers.