It’s been a wild year for AI companies – in the public market, where stocks like Nvidia have skyrocketed, but even more so in the private markets, where one in every four dollars invested in a startup is going to an AI-related company. It’s sending valuations for high-profile names like OpenAI and Anthropic to stratospheric levels, tripling and even quintupling in a matter of months. But how sustainable is it, and can we call this a bubble? This week on Tech Check, the valuation reckoning – which startups might finally face the music?