TL;DR: As AI has swept through customer support teams, reducing headcount and disrupting legacy helpdesks, Sierra has emerged as one of the foremost AI-native upstarts, launching as a productized BPO replacement with autonomous chat & voice. Sacra estimates Sierra grew to $100M ARR in October 2025, up 400% YoY from $20M, valued at $10B for a 100x revenue multiple. For more, check out our full report and dataset...