OpenAI’s release of GPT-5.5 in April 2026, following the flagship GPT-5 launch last August, has reset trader expectations for the next major numbered model. Pre-training on the codenamed “Spud” system wrapped in late March, yet the company positioned it as an incremental upgrade rather than the full generational leap anticipated for GPT-6. This rapid 5.x cadence, combined with competitive pressure from other labs and ongoing scaling of reinforcement learning, points to a late-2026 or early-2027 window for GPT-6. Key catalysts include potential developer-conference reveals, internal capability benchmarks, and any signals on training compute or regulatory timelines that could accelerate or delay the milestone.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$304,334 Vol.
June 30, 2026
11%
September 30, 2026
51%
December 31, 2026
82%
$304,334 Vol.
June 30, 2026
11%
September 30, 2026
51%
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: Nov 12, 2025, 5:07 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 release of GPT-5.5 in April 2026, following the flagship GPT-5 launch last August, has reset trader expectations for the next major numbered model. Pre-training on the codenamed “Spud” system wrapped in late March, yet the company positioned it as an incremental upgrade rather than the full generational leap anticipated for GPT-6. This rapid 5.x cadence, combined with competitive pressure from other labs and ongoing scaling of reinforcement learning, points to a late-2026 or early-2027 window for GPT-6. Key catalysts include potential developer-conference reveals, internal capability benchmarks, and any signals on training compute or regulatory timelines that could accelerate or delay the milestone.
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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