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At close · Thu, Oct 8, 2026
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Prediction markets raise odds for a public OpenAI GPT-6 by late September

Odds for a GPT-6 release by September 30 climbed to around 78%, with Polymarket trading volume on the bet reaching about $731,000.

Money is moving toward a late September bet on OpenAI’s next major model, with prediction market traders lifting their estimates for a public GPT-6 release by September 30, according to Decrypt.

Price data cited by Decrypt shows traders put the odds of a September 30 release at around 78%, up over the last 24 hours on both Polymarket and Myriad.

On Polymarket, Decrypt reports the GPT-6 market generated roughly $731,000 in trading volume, about $32,000 higher than the previous indexed snapshot, and the “released by” contract for September 30 rose to 77%.

On Myriad, Decrypt says odds for a September release are similarly up to 77%, compared with 64% last week, while OpenAI has not announced GPT-6 or any release date and its current flagship is GPT-5.6 Sol, released July 9.

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