OpenAI rolls out GPT-5.5 with enhanced safeguards for select users

OpenAI is releasing GPT-5.5 and GPT-5.5 Pro with enhanced safeguards to select user groups. The “GPT-5.5 released by April 30, 2026” market sits at 99.9% YES, unchanged over the past 24 hours.

The April 30 market is locked at nearly 100% YES now that OpenAI’s rollout is confirmed. The June 30 market is also at 99.9% YES, flat from yesterday but up from 95% a week ago.

The announcement itself resolves the question for practical purposes. The April 23 market closed at 99.6% YES, slightly off the peak on timing, but still overwhelmingly in favor.

Volume hit $367,795 in USDC traded over 24 hours. The order book is thick, consistent with high confidence rather than speculative churn. Only a reversal of OpenAI’s public rollout would challenge these odds.

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

Watch for updates from OpenAI’s official channels, particularly around API access. Sam Altman’s next public statement or blog post could clarify the timeline for broader availability and future releases.

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