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
sierra.aiRevenue
$200 MillionIndustry
ZI Rank: 3
Signal Type
Dec
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ZI Rank
4
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7
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3
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
Activity Insights
Sierra is experiencing very low activity levels compared to other companies in the Software sector.
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Sierra is drawing exceptional interest within the Software industry, suggesting notable developments or strong market momentum, learn more about Sierra.
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
Most Recent Scoops
Event
Retail/Store Systems, Product Marketing, eCommerce, Sales, Software, Store Operations, Field /Outside Sales, Customer Experience, Field Marketing
Person-Based
Earnings, Finance
Hiring Plans
Sierra has more open roles in Operations than it has had at any time in the past 12 months. Areas of expertise include: Contract Negotiation, Cross-Functional Collaboration, and Calendar Management.
Hiring Plans
New Hire
Executive Move
Brian Lederman has recently joined the organization as Regional VP, Enterprise Sales. Previously, Lederman served as Chief Revenue Officer for Productboard.
Executive Moves, New Hire
Person-Based
Website, Mobile Applications
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.
Read more news
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Frequently Asked Questions Regarding Sierra
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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
