Sierra
Customer Engagement Platforms · California, United States · 501-1,000 Employees
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Overview
Headquarters
150 Sutter St 690, San Francisco, Califo...Website
www.sierra.aiRevenue
$200 MillionIndustry
ZI Rank: 4
Signal Type
Jan
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ZI Rank
5
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About Sierra
Sierra builds intelligent, brand-aligned AI agentsboth voice and textthat engage customers naturally, resolve issues autonomously, and integrate with backend systems securely. Their multi-model architecture and oversight layers help ensure reliability. Serving high-profile enterprise clients, theyre rapidly scaling and attracting top-tier investment.Explore more
Sierra Org Chart
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Company Profile Activity
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Sierra is experiencing very low activity levels compared to other companies in the Software sector.
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Sierra financials insights
Gather financial insights about Sierra, including details on funding rounds, investors, total funding, and acquisitions, to gain a comprehensive understanding of their financial strategy.
2024
Other Financing Round
$175M
2025
Other Financing Round
$350M
2026
Other Financing Round
$950M
Sierra Tech Stack
A closer look at the technologies used by Sierra
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Open Position
Open Position
Person-Based
Financial Planning, Funding, Business Finance, Finance
Open Position
Person-Based
Software, Customer Service
Sierra News & Media
Bret Taylor’s Sierra buys YC-backed AI startup Fragment
Sierra, the AI customer service agent startup founded by technologist Bret Taylor, announced today that it has acquired the YC-backed French startup Fragment.Sierra’s Bret Taylor says the era of clicking buttons is over
Co-founder of Sierra predicts that AI agents will make software interfaces obsolete.Bret Taylor’s Sierra reaches $100M ARR in under two years
The startup’s rapid growth suggests that enerprises are embracing AI agents.OpenAI chairman's startup to lease 300K square feet in China Basin
Bret Taylor, who has been leading Sierra since 2023, is expected to open a new 300,000 square foot office at China Basin.
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Sierra builds intelligent, brand-aligned AI agentsboth voice and textthat engage customers naturally, resolve issues autonomously, and integrate with backend systems securely. Their multi-model architecture and oversight layers help ensure reliability. Serving high-profile enterprise clients, theyre rapidly scaling and attracting top-tier investmen... Read More
