Which company has the best Code Arena WebDev AI model end of August?: how this market works

What you need to know

This market asks a simple question: which AI company will have the top-ranked model for web development coding on a specific public leaderboard by the end of August 2026? The leaderboard at arena.ai ranks AI models based on how users rate their ability to write web development code. A Yes for Moonshot means one of their models sits at number one on that list. A Yes for Anthropic or OpenAI means the same for their models. Only one company can win. On August 31, 2026 at 12:00 PM Eastern Time, someone will check the arena.ai Code Arena WebDev leaderboard and read whichever company owns the model sitting in the number one rank slot. That company wins. If two models are tied, the one listed higher on the page wins. If that is still a tie, company names are sorted alphabetically and the first one wins. One important edge case: if the leaderboard website is down that day, the check is delayed until it comes back online. None of the provided news headlines are related to this market. They cover fashion, engineering earnings, and human rights topics. There is no recent news here about arena.ai rankings, web development AI models, or the competing companies. The kind of news that would actually matter here includes new model releases from Moonshot, Anthropic, or OpenAI, or any published updates to the arena.ai leaderboard standings. A lot can change between now and August 31, 2026. The market currently favors Moonshot at 71%, but AI model rankings shift frequently as companies release new versions. Any of the three companies could release a significantly improved model before the deadline. The leaderboard itself is based on live user votes, which can move as more people test newer models. Over a year is a long time in AI development, and today's leader is not guaranteed to hold that position.

The odds right now

• Moonshot+7.0 pts (1w)67%
• Anthropic+12.0 pts (1w)26%
• OpenAI-16.4 pts (1w)6%
• Z.ai-16.8 pts (1w)5%
• SpaceXAI-16.3 pts (1w)3%
• Thinky-17.4 pts (1w)2%
• Mistral-23.6 pts (1w)1%
• Google-20.6 pts (1w)0%
• Meta-3.3 pts (1w)0%
• ByteDance-24.3 pts (1w)0%
• Alibaba-17.3 pts (1w)0%
• MiniMax-3.3 pts (1w)0%

Price history

How this resolves

Resolves August 31, 2026

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 August 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. Read the full resolution rules on the live market page.

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