MLB — live Kalshi & Polymarket vs sportsbook odds
Games
41
With books
10/41
Markets
82
Kalshi quotes
82
Book quotes
220
Books tracked
7
Recent moves (24h)
Game slate (41)
🟢Top buysKalshi cheaper than books — buy YES on Kalshi
Cincinnati
BUY+1.42%
🔒 net-of-fee edge — sign up free
Edge vs books median
Kalshi
47.5%
Books med
48.9%
Best: DraftKings +105
St. Louis vs Cincinnati: Game 1
Cincinnati
BUY+0.52%
🔒 net-of-fee edge — sign up free
Edge vs books median
Kalshi
46.5%
Books med
47.0%
Best: Caesars +110
St. Louis vs Cincinnati: Game 2
Arizona
BUY+0.45%
🔒 net-of-fee edge — sign up free
Edge vs books median
Kalshi
43.5%
Books med
44.0%
Best: DraftKings +126
Arizona vs Boston
🔴Most overpriced on KalshiSell YES on Kalshi, or bet at the books instead
St. Louis
SELL-1.42%
🔒 net-of-fee edge — sign up free
Edge vs books median
Kalshi
52.5%
Books med
51.1%
Best: Other -110
St. Louis vs Cincinnati: Game 1
Philadelphia
SELL-1.27%
🔒 net-of-fee edge — sign up free
Edge vs books median
Kalshi
70.5%
Books med
69.2%
Best: BetMGM -250
Miami vs Philadelphia
San Diego
SELL-0.89%
🔒 net-of-fee edge — sign up free
Edge vs books median
Kalshi
47.5%
Books med
46.6%
Best: Caesars +110
San Diego vs New York M
Filter:Edge vs Books median. Click any column header to sort. 20 rows.
Team / Game | Kalshi | Polymarket | Books med | Buy edge | vs best | # | Start | BetMGM | BetRivers | Caesars | DraftKings | Fanatics🔒 | FanDuel | Other🔒 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 47.5% | — | 48.9% | +1.42% | +0.40% DraftKings +105 | 11 | Mon 1:40 PM | 48.9% | 48.9% | 48.6% | 47.9%★ | 48.9% | 48.8% | 49.4% | |
| 46.5% | — | 47.0% | +0.52% | +0.02% Caesars +110 | 11 | Mon 6:40 PM | 46.8% | 48.0% | 46.5%★ | 47.0% | 46.8% | 47.5% | 47.0% | |
| 43.5% | — | 44.0% | +0.45% | -0.07% DraftKings +126 | 11 | Mon 7:10 PM | 43.7% | 44.8% | 43.6% | 43.4%★ | 44.4% | 44.6% | 44.0% | |
| 39.5% | — | 39.9% | +0.38% | +0.30% DraftKings +147 | 11 | Mon 6:05 PM | 40.1% | 40.3% | 39.9% | 39.8%★ | 39.8% | 39.9% | 39.9% | |
| 39.5% | — | 39.9% | +0.38% | -0.16% DraftKings +150 | 11 | Mon 8:05 PM | 39.8% | 39.7% | 39.9% | 39.3%★ | 39.8% | 40.2% | 39.9% | |
| 29.5% | — | 29.8% | +0.29% | -0.58% DraftKings +240 | 11 | Mon 8:40 PM | 29.9% | 29.6% | 29.6% | 28.9%★ | 29.9% | 29.8% | 29.9% | |
| 30.5% | — | 30.8% | +0.27% | -0.27% FanDuel +225 | 11 | Mon 6:40 PM | 31.8% | 30.8% | 30.4% | 30.3% | 30.9% | 30.2%★ | 30.9% | |
| 45.5% | — | 45.6% | +0.11% | -0.02% Other +113 | 11 | Mon 7:40 PM | 46.3% | 45.5% | 45.6% | 46.8% | 45.7% | 46.2% | 45.5% | |
| 49.5% | — | 49.6% | +0.07% | -1.39% BetRivers +100 | 11 | Mon 7:05 PM | 50.0% | 48.1%★ | 50.0% | 49.8% | 48.9% | 49.1% | 49.6% | |
| 50.5% | — | 50.4% | -0.07% | -0.50% Caesars -105 | 11 | Mon 7:05 PM | 50.0% | 51.9% | 50.0%★ | 50.2% | 51.1% | 50.9% | 50.4% | |
| 54.5% | — | 54.4% | -0.11% | -1.30% DraftKings -118 | 11 | Mon 7:40 PM | 53.7% | 54.5% | 54.4% | 53.2%★ | 54.3% | 53.8% | 54.5% | |
| 53.5% | — | 53.4% | -0.11% | -1.33% Fanatics -120 | 11 | Mon 7:10 PM | 53.2% | 52.6% | 53.5% | 53.4% | 52.2% | 53.4% | 53.5% | |
| 70.5% | — | 70.2% | -0.29% | -0.38% BetMGM -275 | 11 | Mon 8:40 PM | 70.1%★ | 70.4% | 70.4% | 71.1% | 70.1% | 70.2% | 70.1% | |
| 60.5% | — | 60.1% | -0.38% | -0.79% BetRivers -165 | 11 | Mon 6:05 PM | 59.9% | 59.7%★ | 60.1% | 60.2% | 60.2% | 60.1% | 60.1% | |
| 60.5% | — | 60.1% | -0.38% | -0.71% FanDuel -156 | 11 | Mon 8:05 PM | 60.2% | 60.3% | 60.1% | 60.7% | 60.2% | 59.8%★ | 60.1% | |
| 56.5% | — | 56.0% | -0.45% | -1.32% BetRivers -134 | 11 | Mon 7:10 PM | 56.3% | 55.2%★ | 56.4% | 56.6% | 55.6% | 55.4% | 56.0% | |
| 53.5% | — | 53.0% | -0.52% | -1.52% BetRivers -118 | 11 | Mon 6:40 PM | 53.2% | 52.0%★ | 53.5% | 53.0% | 53.2% | 52.5% | 53.0% | |
| 47.5% | — | 46.6% | -0.89% | -0.98% Caesars +110 | 11 | Mon 7:10 PM | 46.8% | 47.4% | 46.5%★ | 46.6% | 47.8% | 46.6% | 46.5% | |
| 70.5% | — | 69.2% | -1.27% | -2.32% BetMGM -250 | 11 | Mon 6:40 PM | 68.2%★ | 69.2% | 69.6% | 69.7% | 69.1% | 69.8% | 69.1% | |
| 52.5% | — | 51.1% | -1.42% | -1.85% Other -110 | 11 | Mon 1:40 PM | 51.1% | 51.1% | 51.4% | 52.1% | 51.1% | 51.2% | 50.6% |
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MLB odds — frequently asked questions
What MLB markets does Kalshi offer?
Kalshi currently lists 41 MLB game lines across 82 markets, plus championship, conference, division, MVP, and award futures depending on the season. SportsBookISH tracks every Kalshi market alongside 7 US sportsbooks so you can see where Kalshi is priced cheaper or more expensive than the books.
Where is the biggest Kalshi edge in MLB right now?
Cincinnati currently shows the largest pricing gap on Kalshi, 1.4 percentage points different from the sportsbook consensus. Edges shift constantly — refresh this page for the latest snapshot.
How often do MLB odds update?
Kalshi prices are pulled every 5 minutes via the public Kalshi REST API. Sportsbook lines refresh every 15-30 minutes. References older than 30 minutes are filtered out so you never see stale comparisons on this page.
What's the difference between Kalshi and traditional sportsbooks for MLB?
Kalshi is a CFTC-regulated event-contract exchange — you buy YES or NO contracts that settle at $1 or $0. Sportsbooks set prices and bake in a vig (typically 4-8% on game lines). Kalshi's fee is max(1¢, ceil(0.07 × p × (1-p) × 100)) capped at 7¢ per contract. When Kalshi prices a side cheaper than the no-vig book consensus, that's a +EV opportunity.
Are MLB futures available on Kalshi?
Yes. SportsBookISH tracks championship, conference, division, MVP, award, and (where applicable) win-total futures markets for MLB. Pro and Elite subscribers get full per-book pricing on every futures market; free users can see game-line comparisons.
Is betting on MLB on Kalshi legal in my state?
Kalshi operates as a federally-regulated exchange under the CFTC, which means it's legally accessible from all 50 U.S. states (unlike most sportsbooks, which are state-by-state). A handful of states have raised challenges to specific market types — always check Kalshi's current state availability page before trading.