The Prediction Markets

Next OpenAI Model: Arena Debut?

Closed
Jun 30, 2026
Traded
$163K
Venues
Polymarket
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This market has closed

Trading ended on Jun 30, 2026. The prices below are the last ones before it closed and no longer update. Browse open markets

Odds by venue

Consensus blends each venue’s last price, weighted by how much has traded there. 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 179 days ago. Ages are as of when this page was built.

  • Polymarket
1500+
1.1%
Polymarket 1.1%polled, 4310 h agoBest Yes 1.9¢ on Polymarket, $100 pays $5,263 (52.6x)
Polymarket
Contract
1500+
Last price
1.1%
As of
Polled 179 d ago
Buy Yes
1.9¢
Sell Yes
0.2¢
$100 on Yes pays
$5,263 (52.6x)
Volume
$47K
Trade this on Polymarket
1480+
0.4%
Polymarket 0.4%polled, 4310 h agoBest Yes 0.5¢ on Polymarket, $100 pays $20,000 (200x)
Polymarket
Contract
1480+
Last price
0.4%
As of
Polled 179 d ago
Buy Yes
0.5¢
Sell Yes
0.2¢
$100 on Yes pays
$20,000 (200x)
Volume
$93K
Trade this on Polymarket
1520+
0.4%
Polymarket 0.4%polled, 4310 h agoBest Yes 0.6¢ on Polymarket, $100 pays $16,667 (167x)
Polymarket
Contract
1520+
Last price
0.4%
As of
Polled 179 d ago
Buy Yes
0.6¢
Sell Yes
0.1¢
$100 on Yes pays
$16,667 (167x)
Volume
$17K
Trade this on Polymarket
1490+
0.1%
Polymarket 0.1%polled, 4310 h agoBest Yes 0.1¢ on Polymarket, $100 pays $100,000 (1000x)
Polymarket
Contract
1490+
Last price
0.1%
As of
Polled 179 d ago
Buy Yes
0.1¢
Sell Yes
—
$100 on Yes pays
$100,000 (1000x)
Volume
$6K
Trade this on Polymarket

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle

How the odds have moved

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

  • 1500+
  • 1480+
  • 1520+

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.

Top of book

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Best ask
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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.

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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 "Next OpenAI Model: Arena Debut?". 1500+ last traded at 1.1%. Next is 1480+ at 0.4%. $163K has traded across 4 outcomes on Polymarket. The market closed on Jun 30, 2026.

This market will resolve to "Yes" if the next model released by OpenAI has at least the specified score on the Arena.AI Leaderboard (arena.ai/leaderboard/text) when the table under the "Leaderboard" tab is checked on the date after the day of the release, 12:00 PM ET. Otherwise, this market will resolve to "No". Results from the "Score" column under the "Text Arena | Overall" Leaderboard tab at https://lmarena.ai/leaderboard/text with style control off will be used to resolve this market. If no qualifying score for the specified model is available on the Arena.AI Leaderboard at 12:00 PM ET following the date of the release, this market will resolve based on the first subsequent instance at which such a score becomes available on the leaderboard. If no qualifying score becomes available by the end of the seventh day following the day of the model’s release, or if no qualifying model release occurs by June 30, 2026, 11:59 PM ET, this market will resolve to "No". If multiple variants of the specified model appear on the Arena.AI Leaderboard at the relevant check time (e.g., base, “Thinking,” or “Instant”), the highest-scoring variant will be used for resolution. A qualifying model must be launched and publicly accessible, including via open beta or open rolling waitlist signups. A closed beta or any form of private access will not suffice. The release must be either clearly defined and publicly announced as being accessible to the general public or otherwise made publicly accessible and explicitly labeled within the company’s official website. Labeling errors, placeholder text, or version names displayed on the website that do not correspond to a model that is actually accessible to the general public will not qualify. The resolution source for this market is the Chatbot Arena LLM Leaderboard found at arena.ai/leaderboard/text. If this resolution source is unavailable at 12:00 PM ET following the date of the release, this market will resolve based on the first subsequent instance at which such a score becomes available on the leaderboard. If it remains unavailable through the end of the seventh day after a qualifying release, it will resolve to "No".

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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