OpenAI's frontier model configured with high reasoning effort for complex professional tasks.
OpenAI's frontier model for complex professional work. Features 1.05M context window, 128k output tokens, and reasoning token support. Reasoning.effort supports: …
OpenAI's frontier model configured with high reasoning effort for complex professional tasks.
Our strongest mini model yet for coding, computer use, and subagents. Brings the strengths of GPT-5.4 to a faster, more …