ChatGPT commands a 97.9% implied probability as the #1 free app in the US Apple App Store on April 3, reflecting its current top ranking ahead of Claude by Anthropic and Google Gemini, per live charts from Appfigures and Apple’s own listings. This strong trader consensus stems from OpenAI’s sustained dominance—capped by topping 2025’s most-downloaded free iPhone apps—following a mid-March surge where Anthropic’s Claude briefly dethroned it amid AI ethics buzz, only for ChatGPT to reclaim the lead amid steady user engagement with advanced large language model features. With resolution nearing end-of-day, sports apps like MLB pose minimal threat absent viral events, though an unexpected update or seasonal spike in NCAA or Freecash could theoretically disrupt in final hours.
Experimental AI-generated summary referencing Polymarket data · Updated Apr 3, 2026, 10:26 AM UTC