Event Brief
UPDATED Apr 24, 2026 at 8:00 AM ET
Apr 23, 2026 at 6:05 PM ET
OpenAI releases GPT-5.5
By The BriefBrief
OpenAI released GPT-5.5, which it says is its smartest and most intuitive model yet.
WHO: OpenAI
WHAT: released GPT-5.5
WHEN: Apr 23, 2026 at 2:29 PM ET
WHERE: Location not specified
WHY: No specific cause was reported.
Reporting from 5 identified publishers across this event arc.
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Publishers represented across this event arc
These publishers contributed reporting to the broader event history. Not every source addresses the specific development described above.
How this brief is built: The BriefBrief correlates multiple sources into one evolving event brief, updated as new facts emerge.
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