The Prediction Markets

Top Coding AI this month

Closed
May 31, 2026
Traded
$18K
Venues
Kalshi
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This market has closed

Trading ended on May 31, 2026. The prices below are the last ones before it closed and no longer update. Browse open markets

Odds by venue

Fair chance strips out each venue’s built-in margin (its prices add up to more than 100%), then blends the venues by how much has traded there, so the outcomes add up to 100%. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue, the oldest 158 days ago. Ages are as of when this page was built.

  • Kalshi
Claude
90%
Kalshi 99%(90% fair)polled, 3814 h ago
Kalshi
Contract
Claude
Last price
99%
Fair, margin removed
90%
As of
Polled 158 d ago
Buy Yes
—
Sell Yes
99¢
Volume
$5K
Trade this on Kalshi
ChatGPT
1.9%
Kalshi 2%polled, 3814 h agoBest Yes 2¢ on Kalshi, $100 pays $5,000 (50.0x)
Kalshi
Contract
ChatGPT
Last price
2%
As of
Polled 158 d ago
Buy Yes
2¢
Sell Yes
—
$100 on Yes pays
$5,000 (50.0x)
Volume
$7K
Trade this on Kalshi
Gemini
1.8%
Kalshi 2%polled, 3814 h agoBest Yes 2¢ on Kalshi, $100 pays $5,000 (50.0x)
Kalshi
Contract
Gemini
Last price
2%
As of
Polled 158 d ago
Buy Yes
2¢
Sell Yes
—
$100 on Yes pays
$5,000 (50.0x)
Volume
$2K
Trade this on Kalshi
Dola
0.9%
Kalshi 1%polled, 3814 h agoBest Yes 3¢ on Kalshi, $100 pays $3,333 (33.3x)
Kalshi
Contract
Dola
Last price
1%
As of
Polled 158 d ago
Buy Yes
3¢
Sell Yes
—
$100 on Yes pays
$3,333 (33.3x)
Volume
$250
Trade this on Kalshi
GLM
0.9%
Kalshi 1%polled, 3814 h agoBest Yes 1¢ on Kalshi, $100 pays $10,000 (100x)
Kalshi
Contract
GLM
Last price
1%
As of
Polled 158 d ago
Buy Yes
1¢
Sell Yes
—
$100 on Yes pays
$10,000 (100x)
Volume
$3K
Trade this on Kalshi
Grok
0.9%
Kalshi 1%polled, 3814 h agoBest Yes 3¢ on Kalshi, $100 pays $3,333 (33.3x)
Kalshi
Contract
Grok
Last price
1%
As of
Polled 158 d ago
Buy Yes
3¢
Sell Yes
—
$100 on Yes pays
$3,333 (33.3x)
Volume
$116
Trade this on Kalshi
Kimi
0.9%
Kalshi 1%polled, 3814 h agoBest Yes 1¢ on Kalshi, $100 pays $10,000 (100x)
Kalshi
Contract
Kimi
Last price
1%
As of
Polled 158 d ago
Buy Yes
1¢
Sell Yes
—
$100 on Yes pays
$10,000 (100x)
Volume
$550
Trade this on Kalshi
MiniMax
0.9%
Kalshi 1%polled, 3814 h agoBest Yes 3¢ on Kalshi, $100 pays $3,333 (33.3x)
Kalshi
Contract
MiniMax
Last price
1%
As of
Polled 158 d ago
Buy Yes
3¢
Sell Yes
—
$100 on Yes pays
$3,333 (33.3x)
Volume
$250
Trade this on Kalshi
Muse
0.9%
Kalshi 1%polled, 3814 h agoBest Yes 1¢ on Kalshi, $100 pays $10,000 (100x)
Kalshi
Contract
Muse
Last price
1%
As of
Polled 158 d ago
Buy Yes
1¢
Sell Yes
—
$100 on Yes pays
$10,000 (100x)
Volume
$250
Trade this on Kalshi
Qwen
0.9%
Kalshi 1%polled, 3814 h agoBest Yes 1¢ on Kalshi, $100 pays $10,000 (100x)
Kalshi
Contract
Qwen
Last price
1%
As of
Polled 158 d ago
Buy Yes
1¢
Sell Yes
—
$100 on Yes pays
$10,000 (100x)
Volume
$298
Trade this on Kalshi

Who resolves this market

Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange)

How the odds have moved

The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.

  • Claude
  • ChatGPT
  • Gemini

Order books

Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

Kalshi

Open on Kalshi ↗

Top of book

Connecting
Best bid
—
Spread
—
Best ask
—

Waiting for the first live quote…

Depth · top 8 levels

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Recent trades

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What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

$
Buy

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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.05 × price × (1 − price) per share (other / general rate). Fee calculator. Estimates only, not advice.

About this market

Final prediction market prices for "Top Coding AI this month". Claude last traded at 90%. Next is ChatGPT at 1.9%. $18K has traded across 10 outcomes on Kalshi. The market closed on May 31, 2026.

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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