Sierra Atlantic
Acquired
Better customer experiences. Built on Sierra.
- Headquarters
- San Francisco, California
- Employees
- 201–500
- Founded
- 2024
- Business Model
- B2B
- Total Funding
- $635.0M
- Last Round
- $350.0M Series BSep 2025
About
Sierra helps businesses build better, more human customer experiences with AI. Founded in 2023 by Bret Taylor, the company develops AI agents for customer service that handle tasks across chat, SMS, WhatsApp, email, voice, and more, with outcome-based pricing.
Tech Stack
Frontend
Next.js
Backend
Python
Cloud/Infrastructure
Google Cloud Platform
Sign up to view funding chart
Create a free account to see funding visualizations and detailed round data.
Create Free Account