OpenAI has demonstrated a consistent pattern of releasing major GPT model versions at regular intervals, typically 12-18 months apart. This market question examines whether the company will release GPT-5.5 by June 30, 2026, approximately 14 months from the market's establishment. Currently trading at 97% YES odds, the market reflects strong consensus that such a release falls within the specified timeframe. The high odds reflect several supporting factors: intense competitive pressure in the AI sector to maintain technological leadership, OpenAI's historical cadence of major model releases, and public statements from company leadership emphasizing continuous model advancement. The market resolves YES if OpenAI officially releases, launches, or makes publicly available any model explicitly designated as GPT-5.5 or higher before June 30, 2026 at midnight UTC. This includes API availability, web interface deployment, or any official announcement meeting the GPT-5.5 naming standard. At 97% probability, traders are pricing in a June 2026 release as highly likely given OpenAI's typical development timelines and the speed of AI model iteration in 2026. The odds have remained relatively stable with only minor fluctuations, suggesting market participants view this outcome as nearly certain.