Current community forecast
Yes 51%
Forecasters
11
Question type
binary
Methodology
Play-money forecasting platform
Source type
Forecast
Market data
Updated 4 hours ago
StaleAug 12, 26, 5:59 PM UTCSep 15, 26, 11:59 PM UTC
Trends
Related Markets
Related questions for context, not a comparison of equivalent contracts.
Who will ever rank #1 in LMSYS Chatbot Arena Text Leaderboard in 2026?
Manifold MarketsWho will ever rank Top 10 in LMSYS Chatbot Arena Text Leaderboard in 2026?
Manifold MarketsWill Ella Langley hold all Top 3 spots on the Billboard Hot 100 this year?
KalshiBest AI at the end of 2026?
KalshiWhich company has best AI model end of 2026?
PolymarketLargest IPO by market cap in 2026?
PolymarketRules
As of 2026-08-12 the LMArena **Text (Overall)** leaderboard has Anthropic holding all three top spots: claude-fable-5 (1507±5), claude-opus-4-6-thinking (1505±4), claude-opus-4-7-thinking (1502±4).
- Meta's muse-spark-1.2 (xHigh) sits at #4 on 1499±10 — inside the error bars of #3. grok-4.6-high entered at #43 (1464±12, preliminary) on release day.
- RESOLUTION: Resolves YES if, at 23:59 UTC on 2026-09-15, the three highest-scoring models in the default Text (Overall) view of the LMArena leaderboard (https://arena.ai/leaderboard/text — formerly lmarena.ai) are ALL listed with Anthropic as the provider/organization.
- Resolves NO if any model from another organization occupies one of those three slots.
- Details: judged on Arena Score, default view, style control as the site ships it by default.
- Different sizes/variants of Anthropic models each count as Anthropic.
Open markets
AIKALSHITop AI model in September?
- claude-fable-5.1-max-12.0pt72%
- claude-opus-5-high+2.0pt6%
- claude-opus-4-6-thinking4%
+3 more outcomes
- Total Vol
- $157.2K
- 24h Vol
- $119.4K
POLYMARKETWill CMI declare a Millennium Prize Problem solved by which date?
- 2028+10.0pt60%
- 2027+2.0pt31.4%
- 2026+2.0pt8.6%
POLYMARKETAnthropic IPO by which date?
- December 31,-1.0pt90%
- December 15,+3.5pt90%
- November 30,85%
+7 more outcomes
- Total Vol
KALSHIBest AI at the end of 2026?
- Claude-0.7pt61.4%
- ChatGPT-2.7pt22.8%
- Grok-0.1pt7.9%
+5 more outcomes
- Total Vol
- $10.6M
KALSHIBest AI in Sep 2026?
- Claude+3.0pt81.3%
- ChatGPT-4.0pt11.2%
- Grok2.8%
+4 more outcomes
- Total Vol
- $377.7K
- 24h Vol
POLYMARKETOpenAI’s Astra Model: Text Arena Debut?
- 1480+-2.5pt66%
- 1490+-9.0pt51%
- 1500+-3.5pt23%
+2 more outcomes
- Largest IPO by market cap in 2026?
- OpenAI IPO Closing Market Cap
- When will Anthropic officially announce an IPO?
- Anthropic IPO Closing Market Cap
- When will OpenAI achieve AGI?
- Will Anthropic’s valuation hit __ by December 31?
- Will OpenAI's valuation hit __ by December 31?
- Next Google Gemini Pro Model released by which date?
- Best Chinese AI Company end of September?
- What will OpenAI's IPO valuation be?
Frequently asked questions
- What are the current odds for Will Anthropic hold all 3 top spots on the LMArena Text leaderboard on September 15, 2026??
- Manifold Markets prices Yes at 51% as of September 8, 2026.
- When does Will Anthropic hold all 3 top spots on the LMArena Text leaderboard on September 15, 2026? resolve?
- Will Anthropic hold all 3 top spots on the LMArena Text leaderboard on September 15, 2026? is scheduled to resolve on September 15, 2026.
- How is Will Anthropic hold all 3 top spots on the LMArena Text leaderboard on September 15, 2026? settled?
- Manifold Markets settles this market as follows: As of 2026-08-12 the LMArena **Text (Overall)** leaderboard has Anthropic holding all three top spots: claude-fable-5 (1507±5), claude-opus-4-6-thinking (1505±4), claude-opus-4-7-thinking (1502±4).