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Sierra Funding raised $950M in a Series E round led by Tiger Global, with GV as co-lead. This funding boosts the company's valuation to over $15 billion, marking a significant milestone in the AI sector.

PRIVATEMay 31, 2026

Amount Raised

$950 Million

Round Type

Series E

San FranciscoSoftwareArtificial Intelligenceinformation technology & services

Investors

Sequoia CapitalGVBenchmarkGreenoaksTiger Global

Description

Sierra Funding secured $950 million in a record-setting Series E round. Tiger Global led the investment, with GV joining as a strategic co-lead. This funding has elevated the startup's total cash available above $1 billion and positioned it among the top private AI companies. The substantial backing reflects growing investor confidence despite market uncertainties.

Quick answer

Sierra Technologies raised $950 Million in a Series E round, dated May 31, 2026. Investors: Sequoia Capital, GV, Benchmark, Greenoaks and Tiger Global. Sierra Technologies is based in San Francisco, California, United States.

How much did Sierra Technologies raise?
Sierra Technologies raised $950 Million in a Series E round on May 31, 2026.
Who invested in Sierra Technologies?
Sequoia Capital, GV, Benchmark, Greenoaks and Tiger Global are named as investors in this round.
What does Sierra Technologies do?
Sierra Technologies is an AI startup co-founded by Bret Taylor and Clay Bavor that focuses on developing a conversational AI platform for businesses.
Where is Sierra Technologies based and how big is it?
Sierra Technologies is based in San Francisco, California, United States. Fundz records about 320 employees.
Who are the decision-makers at Sierra Technologies?
Fundz holds 1 contact at Sierra Technologies. Names and contact details are shown to Fundz members.

Source: Fundz verified event record.

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Company Information

Company

Sierra Technologies

Location

San Francisco, California, United States

About

Sierra Technologies is an AI startup co-founded by Bret Taylor and Clay Bavor that focuses on developing a conversational AI platform for businesses. Founded in 2023, it provides an AI 'agent' to automate various tasks, including customer service and voice calls. The company emphasizes core values such as trust, craftsmanship, and customer obsession. Its platform is designed to enhance customer interactions by using advanced language processing and reasoning capabilities.

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Sierra Technologies raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.

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