OpenAI debuted GPT-5, its most advanced large language model to date, claiming it offers significant improvements in accuracy, reasoning, and writing capabilities. The model integrates multiple functionalities into a unified system accessible to free ChatGPT users and developers via API. New features include selectable AI personalities and enhanced coding abilities. OpenAI CEO Sam Altman described GPT-5 as a major step toward artificial general intelligence, underscoring its potential for transforming education and professional fields. The launch marks a pivotal moment amid intensifying competition in the AI technology sector.