Kalshi 15-minute UP/DOWN predictor

An honest tool, not a crystal ball. 15-minute crypto direction is close to a coin flip, so every probability here is capped near 50% on purpose — the point is to measure your hit rate. If it parks near 50%, that's the truth, not a bug.

⚠︎
Not financial advice. Price comes from Coinbase (a proxy for the CF Benchmarks index Kalshi settles on). Runs entirely in your browser — nothing is sent anywhere, your history is saved locally. Don't risk money you can't afford to lose.

Predict a 15-minute window

Defaults to the upcoming window. Pulls the latest candle automatically (gives up after 7s); if the feed is blocked, type the prior candle below — that works with no internet.

Prediction

Probability
Asset
Confidence
Trade
1h trend
Prior candle
Momentum
Log actual result:

Track record

Win rate
Resolved
0
Logged
0
coin flip
0%50%100%

Recent predictions

Window (ET)AssetPredProbActualHit
Tap UP / DOWN in the Actual column to log or correct any result.

Calibration — does “55%” actually win 55%?

Predicted UP%Actual UP%n
Over a fair sample, these drifting toward ~50% is the honest result.

Danger zone

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