Open AI o3 Introduction

O3 utilizes a novel 'deliberative alignment' training paradigm that incorporates structured reasoning aligned with human-written safety standards. The model employs 'private chain of thought' processing, where it pauses to examine its internal dialog and plan ahead before responding, enabling more sophisticated reasoning capabilities. O3-mini offers three compute settings (low, medium, high) that can adapt its reasoning time based on task complexity. The models are trained to explicitly reason about safety specifications before generating responses, moving beyond traditional approaches like RLHF and Constitutional AI. This enables more context-sensitive and safer outputs while maintaining high performance across various tasks including coding, mathematics, and scientific reasoning.