Sierra just hit a $15B valuation on explosive ARR growth, while Wall Street split hard between Alphabet's AI revenue proof and Meta's infrastructure spending. Three signals that show where enterprise agentic AI is — and what it's going to cost.
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Sierra just raised nine hundred fifty million dollars at a valuation north of fifteen billion, and the number that really tells you why is this: the company went from one hundred million in annual recurring revenue in November to one hundred fifty million in February. That's three months.
Here's what the broader market is signaling right now. Alphabet surged ten percent after earnings, driven by a four hundred sixty billion dollar cloud backlog and clear evidence that AI is moving through advertising and enterprise services into actual revenue.
Sierra fits neatly into the proof-of-return narrative, but there's a cost reality emerging alongside the optimism. Uber's CTO recently disclosed that the company blew through its AI budget after deploying agentic tools at scale.
Sierra launched a product this April that sharpens its positioning further. Ghostwriter is an agent-as-a-service tool that lets users build specialized agents through natural language.
Pull back and the through-line is clear. Enterprise agentic AI has moved from speculative to deployable.
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