Five open models comparing sportsbook prices against prediction markets in one place.
Every pick tracked.Every settle logged. No signup. No paywall.
Updated —
/ Models
Five ways to look at tonight's slate
Each surface runs its own scoring formula. Read how it works for the full methodology on each.
/ Why this exists
Cross-market, honest, and free
Books vs prediction markets
DraftKings and FanDuel move differently than Kalshi, Polymarket, and Novig.
The gap is the signal — we show all five side-by-side, with fair-line
anchors from the low-vig exchanges.
PASS is the default
Most rows on any page will not be picks. When the model doesn't see an
edge, it says so — no theater, no forced action. Actionable picks are
the exception, and they're marked clearly.
Every pick, receipts on file
Numbers on this site are computed from a public settle log —
every tracked pick with timestamp, price, close, outcome. Nothing that
shows up as "62% win rate" comes from a black box.
Free, no signup
Vigsaw runs as a personal research project. There's no login, no paid
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