KalshiCheck availabilityKYC required2% feeVerified resolution dataFairly calibratedCurrent implied probability
Above 60% 53%Leader of 9 outcomes
Market quality
26 / 100
Low quality24h Volume
—
Liquidity
$20
Low liquiditySpread
9.0 pt
Wide spreadMarket data
Updated 4 minutes ago
Sep 3, 26, 5:00 PM UTCSep 11, 26, 2:00 PM UTC
Trends
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Related Markets
Related questions for context, not a comparison of equivalent contracts.
Top Open Source AI this week
KalshiUS government bans an open source AI model in 2026?
PolymarketWill Alibaba release an open-source Music Generation AI model in 2026?
Manifold MarketsWill open-source AI remain at least one year behind proprietary AI? (ACX, AI 2027 #4)
Manifold MarketsWill open-source AI win? (through 2028)
Manifold MarketsWill an open-source AI model top the LMSYS Leaderboard at the end of 2026?
FutuurRules
If the Open vs. Closed Token Volume (open weights share) for Sep 10, 2026 is above 52%, then the market resolves to Yes.
Settles via:Vercel AI Gateway Leaderboards
- This event resolves using the Open Weights percentage in Vercel AI Gateway's Open vs. Closed Token Volume chart.
- At 10:00 AM ET on Sep 11, 2026, Kalshi will use the chart's updated value for Sep 10, 2026.
- Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with Vercel.
- All trademarks, logos, and brand names are the property of their respective owners.
- If the Open vs. Closed Token Volume (open weights share) for Sep 10, 2026 is above 54%, then the market resolves to Yes.
Open markets
AIKALSHITop AI model in September?
- claude-fable-5.1-max+60.0pt71%
- claude-opus-5-max+1.0pt7%
- claude-opus-4-6-thinking4%
+3 more outcomes
- Total Vol
- $154.3K
- 24h Vol
- $116.6K
KALSHIBest AI at the end of 2026?
- Claude+4.8pt60.8%
- ChatGPT+0.5pt25.5%
- Grok-3.4pt5.9%
+5 more outcomes
- Total Vol
- $10.5M
POLYMARKETAnthropic IPO by which date?
- December 31,-1.0pt90%
- December 15,+1.0pt86%
- November 30,84%
+7 more outcomes
- Total Vol
POLYMARKETWill CMI declare a Millennium Prize Problem solved by which date?
- 2028+22.0pt62.2%
- 2027+11.0pt28.6%
- 2026+4.5pt9.2%
KALSHIBest AI in Sep 2026?
- Claude+5.0pt80.4%
- ChatGPT-2.0pt12.2%
- Grok2.8%
+4 more outcomes
- Total Vol
- $374.6K
- 24h Vol
POLYMARKETOpenAI’s Astra Model: Text Arena Debut?
- 1480+-1.0pt66%
- 1490+-3.0pt51%
- 1500+-1.0pt30%
+2 more outcomes
- Largest IPO by market cap in 2026?
- OpenAI IPO Closing Market Cap
- When will OpenAI achieve AGI?
- OpenAI announces it has achieved AGI before 2027?
- 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?
- Anthropic IPO Closing Market Cap
- What will OpenAI's IPO valuation be?
- Which company has best AI model end of 2026?
Frequently asked questions
- What are the current odds for Open Source market share on Sep 10th?
- Kalshi prices Above 60% at 53% as of September 8, 2026.
- When does Open Source market share on Sep 10th resolve?
- Open Source market share on Sep 10th is scheduled to resolve on September 11, 2026.
- How is Open Source market share on Sep 10th settled?
- Kalshi settles this market as follows: If the Open vs. Closed Token Volume (open weights share) for Sep 10, 2026 is above 52%, then the market resolves to Yes.