Kalshi NFL Week 18 — Contract Prices vs. Our Model, All 16 Games
Updated · model ratings
Every Week 18 game with three numbers on one line: our model's win probability, the live Kalshi contract price for that same side, and the gap between them. A game contract pays $1 if the team wins, so the price in cents is the market's implied probability — the two are directly subtractable. Biggest disagreements first.
Quick Answer
As of October 14, 2026, no Week 18 game carries a two-sided Kalshi price yet, so the table below shows our model's number on all 16 games and an em-dash where the contract is not listed.
0 of 16 games carry a live contract price; Kalshi opens game markets as kickoff approaches.
Model and Kalshi columns are both the home side, so a negative edge is value on the away team — the row names it.
The model is DAEPA: 59.6% straight up across 3,266 walk-forward games, Brier 0.236.
Free Week 18 edge sheet — all 16 games, our number vs the Kalshi contract price.
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Model and Kalshi columns are both the home side, so the edge is home-perspective; a negative edge is value on the away team, named in the row. 0 of 16 games carry a live contract price — Kalshi opens game markets as kickoff approaches, and an unopened market shows an em-dash rather than an estimate.
Ranked by disagreement: the live NFL edge board
The table above is every game in model-line order. This board ranks the current week by how far the model and the Kalshi price disagree, largest gap first, and rotates every 5 minutes.
Where else to look
Kalshi NFL Markets is the season-long anchor — futures, division and championship contracts alongside the weekly board. Week 18 predictions carries the same games with the full model write-up per matchup. Power ratings vs. the market does the same comparison at the season level, in rating points.
Kalshi NFL Week 18 — questions
How do I read a Kalshi NFL Week 18 contract price?
A Kalshi game contract pays $1 if that team wins and $0 if it does not, so the price in cents is the market’s implied probability directly — a contract at 62¢ is the market saying 62%. That is what lets us subtract our model’s probability from it and state the difference in percentage points, with no odds conversion in between.
What does the edge column mean?
Edge is our model’s win probability for a side minus the market’s price for that same side, in percentage points. Positive means the model thinks the market is underpricing that team. It is a disagreement, not a guarantee — every contract can settle at $0.
Where does the model number come from?
The Gridiron Edge engine, built on Defense-Adjusted EPA — per-play efficiency adjusted for opponent quality. It grades at 59.6% straight up across 3,266 walk-forward games (2013–2024), Brier 0.236. Those figures grade DAEPA itself, not any composite built on top of it. Every number here is published before kickoff and graded afterwards.
Is every Week 18 game priced yet?
Not always. Kalshi opens game markets as kickoff approaches, so early in a week some games have a model number and no contract price. Those rows show an em-dash in the price and edge columns rather than an estimate — an unopened market has no price, and inventing one would be the whole problem.
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Every signal graded in public, losers left on the board. See the record →
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Win probabilities are the market-anchored fair value once a game is priced; the model’s own line is the lean. Prediction markets carry risk; contracts can settle at $0. Informational only — trade responsibly.