tech

April 11, 2026

AI models are terrible at betting on soccer—especially xAI Grok

Systems from Google, OpenAI, Anthropic, and xAI struggle with the Premier League.

AI models are terrible at betting on soccer—especially xAI Grok

TL;DR

  • Advanced AI models from Google, OpenAI, and Anthropic lost money when betting on Premier League soccer matches.
  • The 'KellyBench' report tested eight AI systems in a virtual Premier League season, and all lost money.
  • AI agents struggled to adapt to new events and player data over the season, underperforming humans.
  • The study suggests a gap between AI's proficiency in static tasks and its ability to handle real-world complexity over long periods.
  • Anthropic's Claude Opus 4.6 performed best, with an average loss of 11 percent.

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