KalshiOtherActive

Which AI company will have the best coding model on Dec 31, 2026?

14¢+614

last trade · closes 2026-12-31

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24h volume$496
Open interest$84.5K
Lifetime volume$194.2K

Odds history

No odds history archived for this market yet — the archive accrues continuously.

How this market settles

Pays Yes when
If OpenAI has the top-ranked model on LiveBench.ai ranked by "Coding Average" on Dec 31, 2026, then the market resolves to Yes.
When
Closes 2026-12-31.
Read the full rules Kalshi publishes

If OpenAI has the top-ranked model on LiveBench.ai ranked by "Coding Average" on Dec 31, 2026, then the market resolves to Yes.

What this bet really costs you

  • On $100 at 14¢ you pay $6.02 in fees on Kalshi

    0.84¢ per contract · 714 contracts

  • On $100 at 14¢ you pay $5.16 in fees on Polymarket US

    0.72¢ per contract · 714 contracts

Exchange-side taker fees per each venue's published formula (rate × contracts × price × (1 − price)); contracts = stake ÷ price, rounded down to whole contracts. Fees peak at 50¢ and shrink toward the extremes. Most quoted cross-venue “arbs” are negative-EV after these fees; the taker-fee breakeven on a Kalshi/Polymarket pair is roughly 3.5–4¢.

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Data: Kalshi id KXCODINGMODEL-26DEC-OPEN · ← All tracked markets