Meta's rapid rise with its new Muse personal AI agent app, which launched September 8 and quickly claimed the top free spot in the U.S. App Store ahead of ChatGPT, forms the core driver behind current trader positioning for the September 25 ranking. Muse's proactive agent capabilities—handling multi-step tasks across connected services via a dedicated secure environment—have fueled strong initial download momentum and daily active users that outpace ChatGPT's early mobile trajectory, creating a tight battle for second place amid fluctuating charts. Vinted's established U.S. resale growth adds competitive pressure in the non-AI segment, while lower odds for Google Gemini and Amazon Prime Video reflect limited recent catalysts. With resolution just days away, short-term volatility from app updates, promotions, or viral moments keeps multiple outcomes clustered near even implied probabilities, underscoring how platform dynamics and fresh AI releases can rapidly reshape rankings.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedChatGPT 31%
Vinted: Pre-loved marketplace 29%
Muse from Meta 10.0%
Google Gemini 2.7%

ChatGPT
31%
Vinted: Pre-loved marketplace
29%

Muse from Meta
26%

Google Gemini
3%

Amazon Prime Video
2%
ChatGPT 31%
Vinted: Pre-loved marketplace 29%
Muse from Meta 10.0%
Google Gemini 2.7%

ChatGPT
31%
Vinted: Pre-loved marketplace
29%

Muse from Meta
26%

Google Gemini
3%

Amazon Prime Video
2%
If the chart is unavailable at 12:00 PM ET, this market may remain open for up to 48 hours to allow for the data to become available. If the data remains unavailable, this market will resolve according to the last published ranking.
To find the overall chart, click "Apps" at the bottom of the US iOS App Store app, scroll down to "Top Free Apps" and click "See All". Then under "Free Apps" in the "Top Charts" section, you'll see the list that will be used as the resolution source to this market (https://apps.apple.com/us/charts/iphone).
Market Opened: Sep 18, 2026, 6:04 PM ET
Resolver
0x69c47De9D...If the chart is unavailable at 12:00 PM ET, this market may remain open for up to 48 hours to allow for the data to become available. If the data remains unavailable, this market will resolve according to the last published ranking.
To find the overall chart, click "Apps" at the bottom of the US iOS App Store app, scroll down to "Top Free Apps" and click "See All". Then under "Free Apps" in the "Top Charts" section, you'll see the list that will be used as the resolution source to this market (https://apps.apple.com/us/charts/iphone).
Resolver
0x69c47De9D...Meta's rapid rise with its new Muse personal AI agent app, which launched September 8 and quickly claimed the top free spot in the U.S. App Store ahead of ChatGPT, forms the core driver behind current trader positioning for the September 25 ranking. Muse's proactive agent capabilities—handling multi-step tasks across connected services via a dedicated secure environment—have fueled strong initial download momentum and daily active users that outpace ChatGPT's early mobile trajectory, creating a tight battle for second place amid fluctuating charts. Vinted's established U.S. resale growth adds competitive pressure in the non-AI segment, while lower odds for Google Gemini and Amazon Prime Video reflect limited recent catalysts. With resolution just days away, short-term volatility from app updates, promotions, or viral moments keeps multiple outcomes clustered near even implied probabilities, underscoring how platform dynamics and fresh AI releases can rapidly reshape rankings.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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