Master the o1, o3, and GPT-5.4 Thinking models — deep reasoning, adaptive effort, and the developer message role. Part of the free OpenAI Academy — every lesson below is open to everyone, no signup required.
A New Paradigm in AI The reasoning model family (o1 → o3 → GPT-5.4 Thinking) represents a fundamental shift. Instead of generating answers token-by-to...
Calibrating Reasoning Depth The reasoning effort parameter lets you control how much time the model spends thinking. This is a cost-quality tradeoff....