SciencePredictItKalshi44¢ spreadARB +53%
SpaceX Mars Mission
Comparing 2 sources · Updated every 60s
Best Yes
93%
PredictIt
Best No
51%
Kalshi
Cross-Source Spread
44¢
Source Count
2
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Price History (Cross-Source)
Historical comparison data will appear after the snapshot ingestion job runs a few times.
Your Prediction
What do you think?50%YES
Very unlikelyCoin flipVery likely
Market price: 93%You are 43pts less bullish
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Price Comparison
| Source | Yes | No | Change | Volume 24h | Total Volume | Open Interest | Liquidity |
|---|---|---|---|---|---|---|---|
| PredictIt | 93% ★ | 7% | — | — | — | — | Low |
| Kalshi | 49% | 51% ★ | — | 207 | 44.7K | 16.2K | High |
PredictItTradingBest Yes
Who will win the 2026 Tennessee Republican nomination for governor? — Marsha Blackburn
Yes
93%
No
7%
Yes Bid/Ask: 96¢ / 93¢
No Bid/Ask: 7¢ / 4¢
KalshiTradingBest No
Will a humanoid robot walk on Mars before a human does?
Before 2035
49%
Before 2035
51%
Yes Bid/Ask: 49¢ / 50¢
No Bid/Ask: 50¢ / 51¢
24h: 207Vol: 44.7KOI: 16.2KCloses: Jan 1, 2035
Arbitrage Calculator
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View PlansFee Reference
| Exchange | Trading Fee | Profit Fee | Withdrawal Fee | Notes |
|---|---|---|---|---|
| PredictIt | None | 10% | 5% | Trading exchange |
| Kalshi | None | 7% | None | Trading exchange |
Resolution Rules
Kalshi — Will a humanoid robot walk on Mars before a human does?
If a humanoid robot walks on Mars before a human does before 2035, then the market resolves to Yes.