TOTAL VOLUME:

$115.9b

24H VOL:

$78,242,292

24H TRANSACTIONS:

1,351,118,393

OPEN INTEREST:

$1,123,310,921

314,014

Markets across

30,653

events

MATCHED EVENTS:

3,372

PLATFORM COVERAGE:

5

Polymarket:

42%

VS.

Kalshi:

58%

Will Anthropic have the best Code Arena | WebDev AI at the end of October 2026?

74%chance
Amount

$

You will be redirected to the platform to complete this trade.
Outcome
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7d
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Description

This market will resolve according to the company that owns the model that has the highest rank based on the arena.ai Code Arena | WebDev Leaderboard when the table under "Code Arena | WebDev" filtered for "Models" is checked on October 31, 2026, 12:00 PM ET. Results from the "Rank" column under the "Code Arena | WebDev" Leaderboard tab at https://arena.ai/leaderboard/code/webdev (Overall) filtered for "Models" will be used to resolve this market. Note: Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score. Models will be ordered primarily by their leaderboard rank at the market’s check time. If two or more models are tied on rank, they will be ordered by which model is listed higher on the leaderboard. If a tie still remains, alphabetical order of company names as listed in this market group will be used as a final tiebreaker (e.g., “Google” would be ranked ahead of “SpaceXAI”). This market will resolve based on the company that occupies first place under this ranking. The resolution source for this market is the arena.ai Code Arena | WebDev Leaderboard. If this resolution source is unavailable at check time, this market will remain open until the leaderboard comes back online and will resolve based on the first check after it becomes available. If it becomes permanently unavailable, this market will resolve to "Other".

Polymarket

This market will resolve according to the company that owns the model that has the highest rank based on the arena.ai Code Arena | WebDev Leaderboard when the table under "Code Arena | WebDev" filtered for "Models" is checked on October 31, 2026, 12:00 PM ET. Results from the "Rank" column under the "Code Arena | WebDev" Leaderboard tab at https://arena.ai/leaderboard/code/webdev (Overall) filtered for "Models" will be used to resolve this market. Note: Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score. Models will be ordered primarily by their leaderboard rank at the market’s check time. If two or more models are tied on rank, they will be ordered by which model is listed higher on the leaderboard. If a tie still remains, alphabetical order of company names as listed in this market group will be used as a final tiebreaker (e.g., “Google” would be ranked ahead of “SpaceXAI”). This market will resolve based on the company that occupies first place under this ranking. The resolution source for this market is the arena.ai Code Arena | WebDev Leaderboard. If this resolution source is unavailable at check time, this market will remain open until the leaderboard comes back online and will resolve based on the first check after it becomes available. If it becomes permanently unavailable, this market will resolve to "Other".

Frequently asked questions

On Polymarket, this dashboard tracks the latest odds and price movements for the Code Arena WebDev AI model race, showing how traders are betting on which company will lead by Oct 31, 2026. You can see real-time updates, historical price charts, and the 24-hour volume of $87 to gauge market interest. The page gives a clear, single-venue view of market sentiment and lets you watch how predictions shift as new information emerges.

On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, traders actively set the odds through buying and selling shares, with the current top outcome at 73.5%. The market price reflects the collective belief of participants about which company will have the best Code Arena WebDev AI model by the end of October, adjusted for new information and volume of $28,113.

This market resolves around Oct 31, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The winner will be determined by independent evaluation of each company's WebDev AI model performance in the Code Arena competition, based on publicly available results and metrics.

Several events could shift this market before Oct 31, 2026. Major product demos, partnerships, or updates from leading companies will likely cause rapid price changes. Analyst reports and media coverage highlighting specific breakthroughs can also influence trader sentiment. As the deadline approaches, any sign that a company is ahead in adoption, performance benchmarks, or user growth may push the odds toward that outcome.