Which company has the best Code Arena WebDev AI model end of October?
Open30as of
Market pricing makes Anthropic the favorite at 88% across 30 tracked outcomes, as of .
What are the odds right now?
Each outcome shows its current market price — the market-implied probability it happens. Click an outcome for its full market page.
What moved the odds?
4 AI-matched news signals available across this event, newest first. Entry price is the called side when the news hit; the signed return marks it against the outcome’s latest price as of .
OpenAI and Anthropic Launch New Models. Why They're No Threat to Meta's Muse. -- Barrons.com
OpenAI and Anthropic Launch New Models. Why They're No Threat to Meta's Muse. -- Barrons.com
Alibaba updated its flagship model Qwen3.8-Max, and third-party rankings show that its front-end programming capabilities have jumped to first place globally.
New Google AI Model Said To Narrow Gap On Coding Ability - WSJ • •
What is this event about?
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".