How much funding has Sierra Atlantic raised?

Sierra Atlantic has raised $635.0M in total funding, most recently a Series B round.

Who are Sierra Atlantic's investors?

Sierra Atlantic's investors include Greenoaks Capital, Sequoia Capital, Benchmark, Thrive Capital, ICONIQ Capital, NEA.

When was Sierra Atlantic founded?

Sierra Atlantic was founded in 2024.

Where is Sierra Atlantic headquartered?

Sierra Atlantic is headquartered in San Francisco, California, United States.

What industry is Sierra Atlantic in?

Sierra Atlantic operates in Artificial Intelligence, customer service agents.

How many employees does Sierra Atlantic have?

Sierra Atlantic has 201-500 employees.

Sierra Atlantic

Acquired

Better customer experiences. Built on Sierra.

San Francisco, United States · Founded 2024 · $635.0M raised

Artificial Intelligence

customer service agents

Headquarters: San Francisco, California
Employees: 201–500
Founded: 2024
Business Model: B2B

Website: sierraatlantic.com
Total Funding: $635.0M
Last Round: $350.0M Series BSep 2025
Rounds: 3

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.

Summary

Sierra Atlantic is an Artificial Intelligence company based in San Francisco, United States, founded in 2024. It has raised $635.0M in total across 3 rounds, most recently a $350.0M Series B round in Sep 2025. Investors include Greenoaks Capital, Sequoia Capital and Benchmark.