OpenAI is rolling out the new model version GPT‑5.1 on the ChatGPT platform to make conversations feel more human and adaptable. Users will see personality presets like “Friendly,” “Professional,” “Candid,” and “Quirky” in addition to existing tones. The update introduces two model modes: Instant for quick responses and Thinking for deeper reasoning, and an Auto setting that assigns the mode automatically. Legacy versions of the model will remain available for paying users during a three-month dual-model transition window. Because chatbots are becoming more human-like, OpenAI says they are monitoring the risk of unhealthy user attachment.
In academic partnership with Virscend University, a WASC-accredited institution in Irvine, California.