A uncommon beast could quickly lumber throughout the hills of Silicon Valley: not a $1bn unicorn, nor a $10bn decacorn, however a hectocorn—a startup valued at greater than $100bn. OpenAI, the maker of ChatGPT, is known to be in talks to boost $6.5bn from traders to fund the enlargement desires of its co-founder, Sam Altman. If it pulls off the deal, OpenAI’s valuation might be about $150bn, making it solely the second ever $100bn-plus startup in America after SpaceX, a rocketry big led by Elon Musk (who co-founded OpenAI in 2015 and is now Mr Altman’s nemesis).