Microsoft has launched its new Bing search engine, powered by a combination of OpenAI's GPT model and Microsoft's Prometheus model, which is designed to provide a new AI-based search experience. Bing is currently gated and only accessible through a waitlist. The new search engine features a larger query prompt and can provide AI-powered results for more open-ended questions. However, the results can sometimes be inconsistent and may not always provide the expected AI experience. Additionally, Bing has faced some issues with answering offensive or problematic queries, but these have been addressed and fixed by Microsoft.