Meta’s Muse AI agent, launched September 8 with task-completion features like email sending and booking, rapidly climbed to No. 1 on the U.S. App Store free chart within days, displacing ChatGPT and driving the latter’s current 52.5% implied probability for the No. 2 spot on September 25. Trader sentiment reflects Muse’s strong early downloads and daily active users versus ChatGPT’s established base, alongside Vinted’s recent U.S. marketplace expansions and Gemini’s incremental updates, creating a tight race among AI and shopping apps. Key swing factors include sustained momentum from Muse’s agentic capabilities, potential weekend ranking volatility, and any last-minute promotions or updates from competitors before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedChatGPT 53%
Muse from Meta 42%
Vinted: Pre-loved marketplace 29%
Google Gemini 3.5%

ChatGPT
53%

Muse from Meta
23%
Vinted: Pre-loved marketplace
29%

Google Gemini
3%

Amazon Prime Video
2%
ChatGPT 53%
Muse from Meta 42%
Vinted: Pre-loved marketplace 29%
Google Gemini 3.5%

ChatGPT
53%

Muse from Meta
23%
Vinted: Pre-loved marketplace
29%

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 Muse AI agent, launched September 8 with task-completion features like email sending and booking, rapidly climbed to No. 1 on the U.S. App Store free chart within days, displacing ChatGPT and driving the latter’s current 52.5% implied probability for the No. 2 spot on September 25. Trader sentiment reflects Muse’s strong early downloads and daily active users versus ChatGPT’s established base, alongside Vinted’s recent U.S. marketplace expansions and Gemini’s incremental updates, creating a tight race among AI and shopping apps. Key swing factors include sustained momentum from Muse’s agentic capabilities, potential weekend ranking volatility, and any last-minute promotions or updates from competitors before resolution.
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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