Polymarket Odds: Anthropic at 83% for Best AI Model End of June, Google at 13%, OpenAI at 3%

Polymarket·low signal

$9.4M has traded on Polymarket's 'best AI model end of June' market, with Anthropic's Claude at 83% implied odds driven by Opus 4.8's SWE-bench Verified leadership and agentic workflow dominance. Google's Gemini holds 13% on multimodal reasoning and large context strengths, while OpenAI's GPT-5 series sits at just 3% amid limited recent benchmark wins. Polymarket claims 94%+ accuracy a full month before outcomes resolve — these odds reflect financial conviction, not survey sentiment, and the OpenAI collapse from market leader to 3% is a striking signal.