OpenAI has completed pretraining on its next frontier large language model, codenamed Spud and dubbed GPT-5.5, sparking trader consensus for an imminent release amid fierce competition from Anthropic's Mythos and Google's Gemini updates. Reports indicate a staggered rollout to select enterprise partners starting mid-April 2026, prioritizing cybersecurity amid rapid iteration cycles seen in March's GPT-5.4 variants, which advanced coding, agentic workflows, and multimodal reasoning. This positions OpenAI strongly in the AI race, though typical slippage in product timelines—often weeks to months—introduces uncertainty; key catalysts include CEO Sam Altman statements or developer previews that could confirm public availability.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$466,083 Vol.
April 15
7%
April 23
83%
April 30
85%
June 30
96%
$466,083 Vol.
April 15
7%
April 23
83%
April 30
85%
June 30
96%
GPT-5.5 refers to a product explicitly named GPT-5.5, or a variant that is recognized as a direct successor to GPT-5.4, similar to the progression from GPT-5.1 to GPT-5.2. (e.g., GPT-5.6, GPT-5.7, etc would qualify toward a "Yes" resolution to this market)
Qualifying releases of task-specialized models (e.g., GPT-Codex/Transcribe), cost-efficiency variants (e.g., Nano/Mini), or reasoning models of the o-series family will count for this market. Products labeled as a new flagship generation GPT-6 or similar will NOT qualify.
For this market to resolve to "Yes," a qualifying model 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 either clearly defined and publicly announced by OpenAI as being accessible to the general public or otherwise made publicly accessible and explicitly labeled within the company’s official website. Labeling errors, placeholder text, or version names displayed on the website that do not correspond to a model that is actually accessible to the general public will not qualify.
The primary resolution source for this market will be official information from OpenAI, with additional verification from a consensus of credible reporting.
Market Opened: Mar 12, 2026, 3:27 PM ET
Resolver
0x65070BE91...GPT-5.5 refers to a product explicitly named GPT-5.5, or a variant that is recognized as a direct successor to GPT-5.4, similar to the progression from GPT-5.1 to GPT-5.2. (e.g., GPT-5.6, GPT-5.7, etc would qualify toward a "Yes" resolution to this market)
Qualifying releases of task-specialized models (e.g., GPT-Codex/Transcribe), cost-efficiency variants (e.g., Nano/Mini), or reasoning models of the o-series family will count for this market. Products labeled as a new flagship generation GPT-6 or similar will NOT qualify.
For this market to resolve to "Yes," a qualifying model 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 either clearly defined and publicly announced by OpenAI as being accessible to the general public or otherwise made publicly accessible and explicitly labeled within the company’s official website. Labeling errors, placeholder text, or version names displayed on the website that do not correspond to a model that is actually accessible to the general public will not qualify.
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 has completed pretraining on its next frontier large language model, codenamed Spud and dubbed GPT-5.5, sparking trader consensus for an imminent release amid fierce competition from Anthropic's Mythos and Google's Gemini updates. Reports indicate a staggered rollout to select enterprise partners starting mid-April 2026, prioritizing cybersecurity amid rapid iteration cycles seen in March's GPT-5.4 variants, which advanced coding, agentic workflows, and multimodal reasoning. This positions OpenAI strongly in the AI race, though typical slippage in product timelines—often weeks to months—introduces uncertainty; key catalysts include CEO Sam Altman statements or developer previews that could confirm public availability.
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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