ChatGPT, the natural language processing tool from OpenAI, has become the fastest-growing app in history, with 100 million active users just two months after launch. Travel companies are one of many industries capitalising on the technology, and ways in which it is being used in the travel sector include booking and reservations, customer service support, personalised recommendations, providing travel information and improving marketing efforts. Travel companies that have integrated ChatGPT include Affordable Balaton Accommodations, Duve, Expedia, iPlan.AI, Magpie, MyRealTrip, MyTrip.AI, Navan, Trip.com and Wingie Enuygun Group.