OpenAI GPT-5

OpenAI's GPT-5, released in mid-2025, represented a significant leap in reasoning, multimodal understanding, and autonomous task completion over its predecessor. The model demonstrated the ability to pass advanced professional certification exams, write and debug complex code, and conduct multi-step research tasks autonomously. GPT-5 drove record ChatGPT subscription growth to over 500 million users and sparked a global policy debate about the pace of AI capability advancement.