OpenAI has not officially announced a GPT-5.5 model or a specific release date as of April 2026. This market tracks whether such a release would occur precisely on April 25, 2026. The current 0% odds reflect market consensus that an announcement matching this exact date is unlikely. GPT development cycles have historically involved months of preparation, testing, and announcement lead time. The specificity of the April 25 deadline makes this a narrow resolution window—the market does not resolve YES merely because GPT-5.5 exists, but only if OpenAI confirms its availability on that specific date. With 13 days until expiration, the low odds suggest traders believe either GPT-5.5 will not be released by then, or if it is, the announcement will not align with April 25. Early trading volume and the minimal liquidity pool indicate relatively low conviction either direction, though the 0% odds show stronger skepticism about an April 25 launch. Resolution depends on OpenAI's official statements and product availability confirmations.