Sierra

● Verification pending Last updated: May 27, 2026 Data last verified: May 21, 2026

Sierra: $4.5B valuation, IPO Readiness 74, Series B. Sierra is the AI customer service platform built by former Google and Salesforce executives, enabling enterpri. Track live on The IPO Stack.

Series BArtificial Intelligencepre-ipo
74
/100
IPO Readiness Score
Grade B — Moderate IPO Readiness
TechStackIPO proprietary score based on funding scale, valuation, stage progression & momentum.
Track Sierra →

Sierra is the AI customer service platform built by former Google and Salesforce executives, enabling enterprises to deploy AI agents for customer support. Valued at $4.5B with $220M raised, Sierra counts Nest, Sirius XM, and other major brands as customers and competes with Zendesk and Salesforce Service Cloud. IPO candidate as AI-native customer service replaces traditional call centers — a $100B+ market.

Valuation
$4.5B
Total Funding
$785M
Stage
Series B
Sector
Artificial Intelligence
Headquarters
San Francisco, CA
CEO
Bret Taylor
IPO Status
pre-ipo

Funding History

Round Amount Date Lead Investors
Series B $175M Oct 2024 Iconiq Capital, Benchmark
Series A $110M Nov 2023 Sequoia Capital, Benchmark
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Related Analysis

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Track Sierra IPO timeline, funding rounds, investor activity, and valuation on TechStackIPO — the pre-IPO intelligence platform.

Frequently Asked Questions

When is Sierra going public? +

Sierra has not announced a specific IPO date as of 2026. With an IPO Readiness Score of 74/100, the company shows strong pre-IPO signals. Subscribe to The IPO Stack newsletter for weekly updates.

What is Sierra's current valuation? +

Sierra is valued at $4.5B as of October 2024. This valuation is based on its most recent private funding round tracked by TechStackIPO.

How can I invest in Sierra before IPO? +

Accredited investors can access Sierra shares through secondary market platforms, pre-IPO investment funds, and broker-dealer platforms that facilitate private company transactions. TechStackIPO's marketplace tracks available access options. Note: pre-IPO investments carry higher risk and limited liquidity compared to public market investing.

What is Sierra's IPO Readiness Score? +

Sierra scores 74/100 (Grade: B) on TechStackIPO's IPO Readiness Index. The score evaluates funding scale, valuation trajectory, funding momentum, stage progression, and company maturity. Scores above 70 indicate strong near-term IPO potential.

How much total funding has Sierra raised? +

Sierra has raised $785M in total venture capital and private equity funding, with backing from Iconiq Capital, Benchmark, Sequoia Capital.

Who are Sierra's key investors? +

Sierra's notable investors include Iconiq Capital, Benchmark, Sequoia Capital. Full investor details, funding round history, and lead investor breakdowns are available on TechStackIPO.

What sector is Sierra in? +

Sierra is a Artificial Intelligence company. Sierra is the AI customer service platform built by former Google and Salesforce executives, enabling enterprises to dep.

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