GPT 5.4 is now on AI Gateway

T1Covered by 1 source · first reported by Vercel (blog + changelog) at 05 Mar, 13:00 UTC

GPT-5.4 and GPT-5.4 Pro are now available on AI Gateway. This model brings the agentic and reasoning leaps from GPT-5.3-Codex to all domains. This includes knowledge work like reports, spreadsheets, presentations, and analysis in addition to coding. It handles complex multi-step workflows more…