A new online revolution has begun and is spreading like wildfire. In November, the tech company OpenAI released ChatGPT – a chatbot you can have a conversation with. It answers nearly anything you ask it, in perfect grammar. It will give you a 300-word text about a movie written in the style of Shakespeare. Analysts have dubbed it a game changer. Hot on the heels of ChatGPT came Google's Bard. A Google-Microsoft battle for the future of online search is now on.

There are many questions about how chatbots will shake up our world. Teachers are worrying about "the end of homework". Bots can give convincing essays to a grade-A standard. Workers fear all kinds of jobs will be lost. ChatGPT is now on the Bing search engine. Microsoft said: "It's a new day in search." Google said: "AI can deepen our understanding of information and turn it into useful knowledge…making it easier for people to…get things done."