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Market Probabilities: prediction markets vs options

Live Kalshi and Polymarket prices for Bitcoin and Ethereum price contracts, side by side with the probability implied by the crypto options volatility surface - plus market odds for the next Fed decisions.

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KalshiLive

636 contracts · 506 without a quote · 0 not classified

Updated Sep 28, 2026, 02:10 PM UTC

PolymarketLive

230 contracts · 21 without a quote · 42 not classified

Updated Sep 28, 2026, 02:10 PM UTC

Options surfaceLive

Implied volatility from Deribit

Spot (options underlying): $83,444

204 contracts comparedMedian absolute gap: 0.9 ppAligned: 166Differs: 36Wide gap: 2
  • $82,000 – $84,000
    Polymarket · Sep 28, 2026, 04:00 PM UTC
    Market price
    80%
    Options-implied
    90.2%Skew-aware digital
    -10.2 pp· Wide gap
  • Above $84,000
    Polymarket · Sep 28, 2026, 04:00 PM UTC
    Market price
    19%
    Options-implied
    9.8%Skew-aware digital
    +8.7 pp· Wide gap
  • $84,000 – $86,000
    Polymarket · Sep 28, 2026, 04:00 PM UTC
    Market price
    18%
    Options-implied
    9.8%Skew-aware digital
    +7.7 pp· Differs
  • Touches ↓ $78,000
    Polymarket · Oct 5, 2026, 04:00 AM UTC
    Market price
    15%
    Options-implied
    21%Barrier (touch) model
    -6.5 pp· Differs
  • Touches ↓ $80,000
    Polymarket · Oct 5, 2026, 04:00 AM UTC
    Market price
    34%
    Options-implied
    40%Barrier (touch) model
    -6.5 pp· Differs
  • Touches ↑ $84,000
    Polymarket · Sep 29, 2026, 04:00 AM UTC
    Market price
    62%
    Options-implied
    56%Barrier (touch) model
    +6.3 pp· Differs
  • Touches ↓ $76,000
    Polymarket · Oct 5, 2026, 04:00 AM UTC
    Market price
    6.5%
    Options-implied
    11%Barrier (touch) model
    -5 pp· Differs
  • Touches ↓ $82,000
    Polymarket · Sep 29, 2026, 04:00 AM UTC
    Market price
    14%
    Options-implied
    18%Barrier (touch) model
    -4.9 pp· Differs
  • Above $84,500
    Kalshi · Sep 28, 2026, 09:00 PM UTC
    Market price
    11%
    Options-implied
    6.7%Skew-aware digital
    +4.8 pp· Differs
  • Touches ↓ $80,000
    Polymarket · Oct 1, 2026, 04:00 AM UTC
    Market price
    14%
    Options-implied
    19%Barrier (touch) model
    -4.8 pp· Differs
  • Touches ↑ $85,000
    Polymarket · Oct 1, 2026, 04:00 AM UTC
    Market price
    46%
    Options-implied
    51%Barrier (touch) model
    -4.8 pp· Differs
  • Above $84,000
    Kalshi · Sep 28, 2026, 03:00 PM UTC
    Market price
    9.5%
    Options-implied
    4.9%Skew-aware digital
    +4.6 pp· Differs
  • $82,000 – $84,000
    Polymarket · Sep 29, 2026, 04:00 PM UTC
    Market price
    49%
    Options-implied
    53%Skew-aware digital
    -4.5 pp· Differs
  • Touches ↓ $82,500
    Polymarket · Oct 1, 2026, 04:00 AM UTC
    Market price
    65%
    Options-implied
    69%Barrier (touch) model
    -4.5 pp· Differs
  • $82,000 – $84,000
    Polymarket · Sep 30, 2026, 04:00 PM UTC
    Market price
    36%
    Options-implied
    40%Skew-aware digital
    -4.3 pp· Differs
  • Above $82,900
    Kalshi · Sep 28, 2026, 03:00 PM UTC
    Market price
    90.5%
    Options-implied
    94.7%Skew-aware digital
    -4.2 pp· Differs
  • Above $84,100
    Kalshi · Sep 28, 2026, 03:00 PM UTC
    Market price
    6.5%
    Options-implied
    2.3%Skew-aware digital
    +4.2 pp· Differs
  • Touches ↓ $60,000
    Polymarket · Jan 1, 2027, 05:00 AM UTC
    Market price
    14%
    Options-implied
    18%Barrier (touch) model
    -4.2 pp· Differs
  • Above $84,750
    Kalshi · Sep 28, 2026, 09:00 PM UTC
    Market price
    7.5%
    Options-implied
    3.4%Skew-aware digital
    +4.1 pp· Differs
  • Above $82,800
    Kalshi · Sep 28, 2026, 03:00 PM UTC
    Market price
    93.5%
    Options-implied
    97.4%Skew-aware digital
    -3.9 pp· Differs
ContractSettlesMarket priceOptions-impliedGapVolume
$82,000 – $84,000
Polymarket
Sep 28, 2026, 04:00 PM UTC
80%
79% / 81%
90.2%Skew-aware digital-10.2 pp· Wide gap12K
Above $84,000
Polymarket
Sep 28, 2026, 04:00 PM UTC
19%
18% / 19%
9.8%Skew-aware digital+8.7 pp· Wide gap132K
$84,000 – $86,000
Polymarket
Sep 28, 2026, 04:00 PM UTC
18%
15% / 20%
9.8%Skew-aware digital+7.7 pp· Differs6K
Touches ↓ $78,000
Polymarket
Oct 5, 2026, 04:00 AM UTC
15%
14% / 15%
21%Barrier (touch) model-6.5 pp· Differs1.4K
Touches ↓ $80,000
Polymarket
Oct 5, 2026, 04:00 AM UTC
34%
33% / 34%
40%Barrier (touch) model-6.5 pp· Differs1.6K
Touches ↑ $84,000
Polymarket
Sep 29, 2026, 04:00 AM UTC
62%
61% / 63%
56%Barrier (touch) model+6.3 pp· Differs14K
Touches ↓ $76,000
Polymarket
Oct 5, 2026, 04:00 AM UTC
6.5%
5% / 8%
11%Barrier (touch) model-5 pp· Differs1.4K
Touches ↓ $82,000
Polymarket
Sep 29, 2026, 04:00 AM UTC
14%
13% / 14%
18%Barrier (touch) model-4.9 pp· Differs13K
Above $84,500
Kalshi
Sep 28, 2026, 09:00 PM UTC
11%
11% / 12%
6.7%Skew-aware digital+4.8 pp· Differs43K
Touches ↓ $80,000
Polymarket
Oct 1, 2026, 04:00 AM UTC
14%
14% / 15%
19%Barrier (touch) model-4.8 pp· Differs496K
Touches ↑ $85,000
Polymarket
Oct 1, 2026, 04:00 AM UTC
46%
46% / 47%
51%Barrier (touch) model-4.8 pp· Differs16K
Above $84,000
Kalshi
Sep 28, 2026, 03:00 PM UTC
9.5%
9% / 10%
4.9%Skew-aware digital+4.6 pp· Differs6.1K
$82,000 – $84,000
Polymarket
Sep 29, 2026, 04:00 PM UTC
49%
48% / 49%
53%Skew-aware digital-4.5 pp· Differs1.6K
Touches ↓ $82,500
Polymarket
Oct 1, 2026, 04:00 AM UTC
65%
64% / 65%
69%Barrier (touch) model-4.5 pp· Differs374K
$82,000 – $84,000
Polymarket
Sep 30, 2026, 04:00 PM UTC
36%
34% / 38%
40%Skew-aware digital-4.3 pp· Differs25
Above $82,900
Kalshi
Sep 28, 2026, 03:00 PM UTC
90.5%
90% / 91%
94.7%Skew-aware digital-4.2 pp· Differs5.8K
Above $84,100
Kalshi
Sep 28, 2026, 03:00 PM UTC
6.5%
6% / 7%
2.3%Skew-aware digital+4.2 pp· Differs4.2K
Touches ↓ $60,000
Polymarket
Jan 1, 2027, 05:00 AM UTC
14%
13% / 15%
18%Barrier (touch) model-4.2 pp· Differs1M
Above $84,750
Kalshi
Sep 28, 2026, 09:00 PM UTC
7.5%
7% / 8%
3.4%Skew-aware digital+4.1 pp· Differs42K
Above $82,800
Kalshi
Sep 28, 2026, 03:00 PM UTC
93.5%
93% / 94%
97.4%Skew-aware digital-3.9 pp· Differs7.3K
Page 1 of 17
  • • Kalshi: 60-second average of the CF Benchmarks real-time index (BRTI/ERTI)
  • • Polymarket: close of the Binance USDT 1-minute candle at 12:00 New York time
  • • Polymarket: any Binance USDT 1-minute High during the window
  • • Polymarket: any Binance USDT 1-minute Low during the window
  • • Times are shown in your time zone.

Fed decision odds (FOMC)

What prediction-market traders are pricing for the next Federal Reserve rate decisions.

October 2026

Decision: Oct 28, 2026
Kalshi
  • Cut 50+ bps
    -
  • Cut 25 bps
    -
  • Hold
    33%
  • Hike 25 bps
    68%
  • Hike 50+ bps
    1.5%
Polymarket
  • Cut 50+ bps
    0.3%
  • Cut 25 bps
    0.5%
  • Hold
    34%
  • Hike 25 bps
    66%
  • Hike 50+ bps
    0.9%

Venues differ by up to 2 pp

December 2026

Decision: Dec 9, 2026
Kalshi
  • Cut 50+ bps
    -
  • Cut 25 bps
    1.5%
  • Hold
    20%
  • Hike 25 bps
    79%
  • Hike 50+ bps
    2.5%
Polymarket
  • Cut 50+ bps
    0.5%
  • Cut 25 bps
    1.5%
  • Hold
    20%
  • Hike 25 bps
    77%
  • Hike 50+ bps
    2.1%

Venues differ by up to 2 pp

January 2027

Decision: Jan 27, 2027
Kalshi
  • Cut 50+ bps
    -
  • Cut 25 bps
    3%
  • Hold
    47%
  • Hike 25 bps
    49%
  • Hike 50+ bps
    1.5%
Polymarket
  • Cut 50+ bps
    2.3%
  • Cut 25 bps
    4.5%
  • Hold
    46%
  • Hike 25 bps
    48%
  • Hike 50+ bps
    2.2%

Venues differ by up to 1.5 pp

March 2027

Decision: Mar 17, 2027
Kalshi
  • Cut 50+ bps
    6%
  • Cut 25 bps
    3.5%
  • Hold
    -
  • Hike 25 bps
    -
  • Hike 50+ bps
    -

April 2027

Decision: Apr 28, 2027
Kalshi
  • Cut 50+ bps
    4.5%
  • Cut 25 bps
    -
  • Hold
    61%
  • Hike 25 bps
    33%
  • Hike 50+ bps
    4%

June 2027

Decision: Jun 9, 2027
Kalshi
  • Cut 50+ bps
    -
  • Cut 25 bps
    7%
  • Hold
    57%
  • Hike 25 bps
    40%
  • Hike 50+ bps
    7.5%

July 2027

Decision: Jul 28, 2027
Kalshi
  • Cut 50+ bps
    -
  • Cut 25 bps
    7%
  • Hold
    82%
  • Hike 25 bps
    9%
  • Hike 50+ bps
    -

September 2027

Decision: Sep 15, 2027
Kalshi
  • Cut 50+ bps
    -
  • Cut 25 bps
    -
  • Hold
    63%
  • Hike 25 bps
    -
  • Hike 50+ bps
    3.5%

How the comparison works

Each contract is classified from its settlement rule, not its title. "Above/below/range on a date" contracts pay on one instant and are compared with a digital option price; "touch" contracts pay if the level trades at any time and use a first-passage (barrier) model, whose probability is roughly twice the digital's.

The options-implied number uses mark implied volatilities from Deribit (with OKX and Bybit as fallbacks), interpolated in strike and in total variance over time, and priced with the volatility smile. It is a risk-neutral probability: it includes the market's risk premium and is not a forecast.

A gap is not arbitrage. Kalshi settles on a 60-second CF Benchmarks index average, Polymarket on a single Binance candle; times, fees, spreads and settlement sources all differ. Rows without a two-sided quote, in the price tails or outside the listed options are shown but never scored.

Frequently asked questions

Is the gap between Polymarket, Kalshi and options an arbitrage?

No. The venues settle on different sources and instants, charge fees and trade with spreads. A gap shows that two markets hold different views or definitions - useful context, not free money.

What does the options-implied probability mean?

It is the probability the options market prices under the risk-neutral measure, read from the implied-volatility surface including its skew. It embeds a risk premium, so it is not a forecast of how often the event actually happens.

Why are touch contracts priced differently?

A "will Bitcoin hit $X" contract wins if the price trades there at any time, not only at expiry. That first-passage probability is roughly double the at-expiry probability, so comparing it with an ordinary digital option would be wrong.

Where do the Fed odds come from?

From Kalshi's FOMC decision markets and Polymarket's Fed decision markets, shown per venue with their own quotes. When both are available, the largest disagreement is shown.

Options surface Economic calendar Volatility radar

Educational information, not investment advice. Prediction-market access is restricted in some jurisdictions; check your local rules before trading on any venue.