GPT-5.4 is an AI model released by OpenAI on Mar 5 2026, 2 days after GPT-5.3-Instant. It is the 30th tracked release from OpenAI out of 33 total.
On published benchmarks, it scores 92.8% on GPQA Diamond (graduate-level science reasoning).
About OpenAI: Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.