Introducing GPT‑5.4

OpenAI released GPT-5.4 and GPT-5.4-pro, two new AI models with a 1 million token context window (the amount of text the model can consider at once) and an August 31st, 2025 knowledge cutoff. The models are priced slightly higher than the previous GPT-5.2 family and show significant improvements on business tasks like spreadsheet modeling, achieving 87.3% accuracy compared to 68.4% for GPT-5.2.