This page may contain stale information. Last updated: 2026-05-06
Overview
Sierra AI is an enterprise AI agent platform co-founded by Bret Taylor (OpenAI Chairman, former Salesforce co-CEO) and Clay Bavor (former Google VP). The company specializes in sophisticated, multi-step enterprise workflows including mortgage origination, insurance claims processing, and healthcare revenue cycle management.
Recent Developments
- 2026-05-04: Raised 15.8B valuation (3x increase from late 2024)
- 2026-04: Launched Ghostwriter, an “agent-as-a-service” platform for building custom AI agents using natural language
Key Metrics
- ARR: $150M within 8 quarters (launched February 2024)
- Client Base: 40%+ of Fortune 50 including Nordstrom, Cigna, Singtel, Prudential, SiriusXM, Sonos
- Total Raised: Over $1B in available capital
Products
Agent OS
Sierra’s platform for building and deploying enterprise AI agents with sophisticated workflow capabilities.
Ghostwriter (April 2026)
An “agent-as-a-service” tool enabling enterprises to create custom AI agents using natural language prompts.
Founders
- Bret Taylor: CEO, also Chairman of OpenAI
- Clay Bavor: Former Google executive with extensive enterprise experience
Investors
Tiger Global, GV (Google Ventures), Benchmark, Sequoia Capital, Greenoaks