Polymarket Odds Favor Anthropic Over OpenAI Despite GPT-6 Astra Launch

Polymarket gives Anthropic 98% odds for September versus OpenAI's 1%, even after GPT-6 Astra launched September 3 and Data Agent for ChatGPT Work on September 10. Anthropic's October odds rose 16.5 points to 88%, and year-end odds stand at 72% versus OpenAI's 10%.

• Polymarket September: Anthropic 98%, OpenAI 1%
• Anthropic October odds up 16.5 points to 88%
• GPT-6 Astra costs $10 per 1M input tokens, like Fable 5.1
• Claude Fable 5.1 leads Arena with 1231 points; Astra unranked