Family
OpenAI

GPT-5.4 family

4 releases · Elo progression and succession lineage (D9)
Elo progression
Mar 2026GPT-5.4CLOSED—2445.3Mar 2026GPT-5.4 ProCLOSED—2759.5Mar 2026GPT-5.4 miniCLOSED—succeeds GPT-5.4-379.42065.9Mar 2026GPT-5.4 nanoCLOSED—succeeds GPT-5.4-5161929.3