OpenAI’s April 2026 launch of GPT-5.5, the model internally codenamed “Spud,” has become the dominant factor shifting trader expectations for GPT-6. Pre-training on that model finished in late March, and its modest gains over the March GPT-5.4 release led OpenAI to retain the GPT-5 branding rather than introduce the next full-numbered model. This rapid iteration pattern, combined with Sam Altman’s April hint that a larger leap remains in development, has moved market-implied odds toward a Q3–Q4 2026 or early-2027 window. Traders are now watching for any official post-training update or competitive pressure from rival frontier labs that could accelerate the next major release.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$304,319 Vol.
June 30, 2026
11%
September 30, 2026
53%
December 31, 2026
82%
$304,319 Vol.
June 30, 2026
11%
September 30, 2026
53%
December 31, 2026
82%
For this market to resolve to "Yes," GPT-6 must be launched and publicly accessible, including via open beta or open rolling waitlist signups. A closed beta or any form of private access will not suffice. The release must be clearly defined and publicly announced by OpenAI as being accessible to the general public.
GPT-6 refers to a product explicitly named GPT-6 (e.g. ChatGPT-6o would count), or one that is recognized as a successor to GPT-5, similar to the progression from GPT-3 to GPT-4. Products labeled as GPT-5.5 or similar will not count for this market's resolution.
The primary resolution source for this market will be official information from OpenAI, with additional verification from a consensus of credible reporting.
Market Opened: Feb 4, 2026, 1:09 PM ET
Resolver
0x65070BE91...For this market to resolve to "Yes," GPT-6 must be launched and publicly accessible, including via open beta or open rolling waitlist signups. A closed beta or any form of private access will not suffice. The release must be clearly defined and publicly announced by OpenAI as being accessible to the general public.
GPT-6 refers to a product explicitly named GPT-6 (e.g. ChatGPT-6o would count), or one that is recognized as a successor to GPT-5, similar to the progression from GPT-3 to GPT-4. Products labeled as GPT-5.5 or similar will not count for this market's resolution.
The primary resolution source for this market will be official information from OpenAI, with additional verification from a consensus of credible reporting.
Resolver
0x65070BE91...OpenAI’s April 2026 launch of GPT-5.5, the model internally codenamed “Spud,” has become the dominant factor shifting trader expectations for GPT-6. Pre-training on that model finished in late March, and its modest gains over the March GPT-5.4 release led OpenAI to retain the GPT-5 branding rather than introduce the next full-numbered model. This rapid iteration pattern, combined with Sam Altman’s April hint that a larger leap remains in development, has moved market-implied odds toward a Q3–Q4 2026 or early-2027 window. Traders are now watching for any official post-training update or competitive pressure from rival frontier labs that could accelerate the next major release.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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