OpenAI has been making waves in the world of tech and investors with its AI products and its $10bn in backing from Microsoft. Now, a growing number of large and small companies are racing to try to overtake the startup in the suddenly hot world of AI services. Artificial intelligence is a rare bright spot in the tech industry, with generative AI companies attracting vast sums of venture capital dollars. This article looks at some of the most significant companies in the running to be the next big AI success story.