Sierra hits $400M+ ARR, adding $150M+ in Q3 alone

Sierra reached $400M+ in ARR, adding over $150M+ in ARR in Q3 alone, more than it generated in all of last year. The company says it took six months to double from $100M to $200M ARR but only five months to double from $200M to $400M, and it now works with almost 50% of the Fortune 50. Sierra also says it is developing an open standard called Poppy with over 50 enterprises, including Meta, Shopify, Stripe and Walmart, for controlling how personal agents interact with brands.