- Will Anthropic have the #1 AI model at the end of September 2026?80¢
- Will Meta have the #1 AI model at the end of September 2026?5¢
- Will Google have the #1 AI model at the end of September 2026?10¢
- Will Moonshot have the #1 AI model at the end of September 2026?2¢
- Will OpenAI have the #1 AI model at the end of September 2026?5¢
- Will Alibaba have the #1 AI model at the end of September 2026?2¢
- Will SpaceXAI have the #1 AI model at the end of September 2026?<1¢
- Will Z.ai have the #1 AI model at the end of September 2026?<1¢
- Will Baidu have the #1 AI model at the end of September 2026?<1¢
- Will Xiaomi have the #1 AI model at the end of September 2026?<1¢
- Will DeepSeek have the #1 AI model at the end of September 2026?<1¢
- Will ByteDance have the #1 AI model at the end of September 2026?<1¢
This market will resolve according to the company which owns the model which has the highest arena rank based on the arena.ai Text Arena (Overall) (Style Control On) when the table under the "Leaderboard" tab is checked on September 30, 2026, 12:00 PM ET. Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall with style control on (Adjustments: Style Control) and filtered for "Models" will be used to resolve this market. 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 their Arena score, including any underlying, unrounded, granular values reflected in the data below 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., if the two models are tied by exact arena score, “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 Text Arena (Overall). 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".
Anthropic holds the strongest market-implied odds at roughly 80% for fielding the top AI model on the style-controlled LMSYS Arena leaderboard by September 30, 2026. Its recent Claude Opus 5 (July 2026) and related Fable/Mythos 5 variants lead composite intelligence indices, agentic coding benchmarks, and style-normalized text arenas, reflecting consistent advantages in precise, concise reasoning over verbose alternatives. Competitors such as OpenAI’s GPT-5.6 variants and Google’s Gemini models trail on these adjusted metrics despite strong raw capability in other evaluations. Frequent Anthropic updates through mid-2026 have sustained this positioning, while limited credible reports of imminent rival releases before the snapshot reinforce trader consensus around the current frontier leader.