OpenAI rolls out GPT-5.5 with improved protections for some users

OpenAI releases GPT-5.5 and GPT-5.5 Pro with improved protections for certain user groups. The “GPT-5.5 released by April 30, 2026” market is located at 99.9% YES, unchanged in the last 24 hours.

The April 30 market is locked in at almost 100% YES now that the OpenAI deployment is confirmed. The June 30 market is also 99.9% YES, stable compared to yesterday but up from 95% a week ago.

The ad itself resolves the question for practical purposes. The April 23 market closed at 99.6% YES, slightly off the peak in terms of timing, but still mostly favorable.

Volume reached $367,795 in USDC traded over 24 hours. The order book is thick, reflecting high confidence rather than speculative churn. Only a reversal of the public deployment of OpenAI would call these probabilities into question.

For contrarian traders, there is almost nothing to work with. A YES share to 99¢ pays $1 if GPT-5.5 is released before April 30, a negligible return.

Watch for updates to the official OpenAI channels, especially regarding API access. Sam Altman’s next public statement or blog post may clarify the timeline for wider availability and future releases.

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