you think Mark didn't know it when he hired that guy for $250 millions? Anyway, you probably mean an individual hiring cost. Which is a totally different case from hiring and building a multifunctional team of 100. Look around at aqui-hires to understand the price, especially when we're talking about people who has been working with AI products.

$250 million was for a top researcher with more experience than almost anyone else in designing and training massive models.

As far as I know, Dia just calls OpenAI’s API. I’m sure their employees know a lot about using AI at this point, but so does everyone else who’s built an OpenAI wrapper.