According to OpenAI's official website, this is the most powerful AI system the organization has ever released. It surpasses previous models in various benchmarks and boasts industry-leading performance in programming, mathematics, writing, health, and visual perception. It also demonstrates significant progress in reducing hallucinations (error generation), improving command execution, and reducing the tendency to flatter. OpenAI states that GPT-5 utilizes a unified system architecture that integrates efficient base models, deep reasoning modules, and a real-time routing system. It can adapt to different situations by determining when to respond quickly and when to engage in deep reasoning to provide advanced answers.
OpenAI CEO Sam Altman called GPT-5 a "world-class model" and a "significant step" towards OpenAI's development of artificial general intelligence (AGI). GPT-5 is available to all users, but different subscription tiers offer different access rights and features. For example, Pro subscribers have access to the more powerful GPT-5 Pro version.