
Integrating GPT-5 into ChatGPT: A Deep Dive into New Modes, Performance, and User Experience Shifts
ChatGPT switched to GPT5 as its main model on August 7, 2025, bringing new modes like Auto, Fast, Thinking, and ThinkingMini, longer context, and a friendlier chat style. Users now get replies in more voices and languages, and can choose how deep or fast they want answers. Some people liked the warmer tone, but others missed the old robotic feel, causing OpenAI to promise more personality options. GPT5 is better at planning big coding jobs and costs less, though it's not always the best at pure













