Sierra ARR Hit $150M

Sierra, the enterprise AI agent platform co-founded by former Salesforce co-CEO Bret Taylor and Google veteran Clay Bavor, has emerged as a fast-growing force in AI-powered customer experience automation, enabling brands to deploy autonomous chat and voice agents across complex support and engagement workflows.

Launched publicly in February 2024, Sierra’s product suite — built on its Agent OS and Agent Data Platform — allows enterprises to route customer interactions across channels like voice, chat, email, and WhatsApp, automating resolution and backend actions (like returns or subscription updates) without human intervention.

Its AI agents are designed to handle nuanced, real-world use cases for regulated industries like finance, healthcare, and media, with notable deployments at companies such as ADT, SiriusXM, and Rocket Mortgage. 

The company’s growth trajectory has been remarkable: after reaching $100M in ARR in just seven quarters since launch, Sierra reported its first $50M quarter, propelling its annualized recurring revenue above $150M as it entered its third year of operations.

This momentum is driven by strong enterprise adoption — one in four customers generates more than $10B in revenue and half exceed $1B — and outcomes-based pricing tied to usage and successful resolutions. Sierra’s platform now touches an estimated 95% of U.S. shoppers during peak retail periods, 50% of healthcare families, and 70% of fintech value chain interactions, underscoring broad usage across major markets. 

On the company financials and backing, Sierra has secured substantial venture funding, raising $285M+ through rounds that culminated in a $10B valuation in 2025, led by Greenoaks Capital with participation from Sequoia, Benchmark, ICONIQ, and Thrive Capital. Earlier rounds included $110 M in initial financing and a $175M Series led by Greenoaks at a $4.5B valuation.