Diagnostics companies such as Tempus AI and Personalis control data AI labs cannot easily get, because it is a byproduct of running diagnostics businesses that the labs have neither the appetite nor the skill to build. Per David Friedberg, via @dnapway, nearly every big pharma company refused Anthropic's request to share proprietary data for a new life sciences model. That leaves @lefkofsky's Tempus holding the winning hand. x.comÂ