OpenAI unveils GPT-5.4 Pro and Thinking models

OpenAI released GPT-5.4 on Thursday, introducing a new foundation model available in standard, Thinking, and Pro versions. The launch introduces a model with a 1 million token context window and improved token efficiency, targeting professional workloads. The release includes new benchmark records and a system to manage tool calling within the API. GPT-5.4 is available […]