Almost exactly three years ago, everything changed: OpenAI launched ChatGPT and upended the entire world in a moment. Since then, artificial intelligence has transformed industries, become one of the most popular talking points in the world and much more besides.

Throughout all that, ChatGPT has remained so popular that it is almost synonymous with generative AI and chatbots. But that dominance might be under threat: this week, it was reported that OpenAI boss Sam Altman has issued a “code red” and urged staff to improve ChatGPT, amid fears it could be overtaken by rivals.

There are many of those rivals, each of them also offering a system that will use a large language model to answer questions that are written into a box, just like ChatGPT. They include Google ’s Gemini model – t

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