OpenAI introduces GPT-5.4 with more knowledge-work capability

Updates come amid user blowback over the company's Pentagon deal.

Developing Major update Updated Mar 5, 2026, 9:01 PM UTC

Track this event Edit in app More event pages

What changed

mastodon.social joined prior reporting from Ars Technica.

First seen Mar 5, 2026, 8:55 PM UTC Latest source Mar 5, 2026, 9:01 PM UTC

Update 1 1h ago

mastodon.social •published Mar 5, 2026, 9:01 PM UTC •fetched Mar 5, 2026, 9:05 PM UTC

Update 2 1h ago

Ars Technica •published Mar 5, 2026, 8:55 PM UTC •fetched Mar 5, 2026, 10:39 PM UTC