OpenAI on Wednesday launched GPT-Live, a pair of new voice models that fundamentally redesign how people talk to ChatGPT — replacing the company’s existing Advanced Voice Mode with an architecture that can listen and speak simultaneously, much like an actual human conversation. The two models, GPT-Live-1 and GPT-Live-1 mini, are rolling out globally starting today across iOS, Android, and ChatGPT.com. GPT-Live-1 becomes the default voice model for paid ChatGPT users on the Go, Plus, and Pro tiers, while GPT-Live-1 mini serves free-tier users. OpenAI also plans to bring the models to the API, and developers can sign up to be notified. The release marks the third generation of ChatGPT’s voice technology in roughly two years — and OpenAI’s clearest bid yet to turn its chatbot into something that feels less like querying a search engine and more like talking to a colleague. Why full-duplex voice changes everything about talking to AI The defining technical advance in GPT-Live is what OpenAI calls a “full-duplex architecture.” In telecommunications, full-duplex means both parties on a phone call can …