Polymarket traders have sharply reduced the implied odds that OpenAI will publicly release Astra by Sept. 15, with the contract at 42%, down 18% over 24 hours. The probability of a release by Aug. 31 stood at 10%, down 8% over the same period. Astra is OpenAI's internal name for what has been reported as GPT-6, although the company has not announced a public release date. The market resolves Yes if OpenAI or credible media confirms before the specified U.S. Eastern Time deadline that OpenAI has publicly released Astra, or a product confirmed to be the same model under another name, including Astra 1 or GPT-6 Astra. A public beta or open waitlist qualifies, while a closed beta or private access does not. The latest pricing marks a reversal from earlier market optimism, which had put the Sept. 15 odds at 59% and the Sept. 30 odds near 72%.