Will artificial intelligence usher in a new age of prosperity, or are we sowing the seeds of our own destruction? Some scientists have long feared that AI will lead to human extinction, as ever more ruthless and capable machines elbow us aside. In certain circles it has even become fashionable to stockpile supplies in underground bunkers to prepare for a dystopian future. Optimists argue that AI will be a terrific boon, not least to science and medicine. For instance, MIT researchers have used a deep learning model to identify a chemical compound to treat E. Coli infections. And the 2024 Nobel Prize in Chemistry was awarded to the developers of Google DeepMind for mapping proteins far quicker than previously possible. Toby Walsh has worked in AI since before most people had a computer. In God AI, he guides us with humour and humanity through the claims and the counter-claims – and helps us make up our own minds about one of the biggest issues of our time.