OpenAI introduces GPT 5.5

OpenAI's introduction of GPT 5.5 signals an advance in AI technology that could significantly impact various sectors, particularly technology and software.

Newsquawk StaffPublished 23 Apr 2026, 18:25 UTCOn the live feed at 18:05 UTC — 4 more headlines followed before this page went public

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18:12

Iranian Media Journalist Khalili says resignation of Ghalibaf from the chairmanship of the negotiating delegation is not true

18:07

[MARKET UPDATE] Markets pare some of the earlier escalatory moves as Israel denies attacks in Iran, while a journalist implies Ghalibaf news is false and as Iran air defense activation was reportedly a test

18:05

OpenAI introduces GPT 5.5

18:04

Independent Journalist Guy Elster suggests triggering of air defences in Tehran was probably a drill

18:03

There is no changes in the ceasefire status with Iran, reports Al Jazeera citing US defense official

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Context

For traders, this news may be worth monitoring as it could affect companies like Microsoft and market dynamics within US equities, given the reliance on AI advancements in enhancing productivity and innovation.

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