Last month a company in San Francisco called OpenAi released an artificial intelligence system called GPT-4 – a successor to its hugely popular AI chatbot ChatGPT. The latest version can respond to images, write captions and descriptions – processing up to 25,000 words at a time. Researchers claim GPT-4 shows “sparks of artificial general intelligence” – in other words it can match or exceed human capabilities in tasks a person can do.