When was Sierra founded?

Sierra was founded in 2023 and become a unicorn in its 1st funding round in 2024.

Where is Sierra located?

Sierra is headquartered in San Francisco, United States.

How many employees does Sierra have?

As of Mar 31, 2026, the latest employee count at Sierra is 628.

Is Sierra a funded company?

Sierra is a funded company, having raised a total of $635M across 3 funding rounds to date. The company's 1st funding round was a $110M Seed round, raised on Feb 13, 2024.

How much is Sierra worth?

The latest valuation of Sierra is $10B as of Sep 04, 2025.

When was the latest funding round of Sierra?

Sierra's latest funding was a $350M Series B round on Sep 04, 2025, with participation from 1 investor.

Is Sierra a Customer Service Software company?

The primary sectors of Sierra are Customer Service Software, Generative AI, Chatbots, Agentic AI and Artificial Intelligence.

Where does Sierra rank among its competitors?

Sierra ranks 7th amongst 929 active competitors, of which 126 are funded. It stands 1st in terms of total funding among its competitors. The most recent competitor to raise funding was Hyro, which secured $45M in Oct, 2025.

Who are the top competitors of Sierra?

Sierra's top competitors include Hyro, Rasa and LivePerson. Among them, Hyro secured the most recent funding round in October, 2025.

Sierra - 2026 Company Profile, Team, Funding & Competitors

Sectors and market segments that Sierra operate in

Sierra serves in the High Tech, Native AI market segments.The primary business model of Sierra are:

Company Details

Developer of an AI agent operating system for customer experiences. The company provides tools to build, test, and optimize AI agents. It offers capabilities for analyzing agent performance, identifying conversations needing attention, and running tests. The company's platform allows for integrating customer data and personalizing experiences.

Website: sierra.ai
Social

Key Metrics

Founded Year

2023

Location

San Francisco, United States

Stage

Series B

Total Funding

$635M in 3 rounds

Latest Funding Round

Series B, Sep 04, 2025, $350M

Post Money Valuation

$10B as on Sep 04, 2025

Investors

Greenoaks & 4 more

Ranked

7^th among 929 active competitors

Employee Count

628 as on Mar 31, 2026

Similar Companies

Dialpad & 2181 more

View Sierra's full profile

Sierra is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
SIERRA TECHNOLOGIES, INC. CIN: 7364179 , United States, Active	Mar 20, 2023	-	-	-

Sierra has raised a total funding of $635M over 3 rounds. Its first funding round was on Feb 13, 2024. Its latest funding round was a Series B round on Sep 04, 2025 for $350M. 1 investor participated in its latest round. Sierra has 5 institutional investors.

Here is the list of recent funding rounds of Sierra:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Sep 04, 2025	$350M	Series B	$10B	-	Greenoaks	-
Oct 29, 2024	$175M	Series A	$4.5B	-	Greenoaks	Iconiq Capital, Thrive Capital
Feb 13, 2024	$110M	Seed	$1B	-	Sequoia Capital, Benchmark	-

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View details of Sierra's funding rounds and investors

The founders of Sierra are Bret Taylor and Clay Bavor. Bret Taylor is the CEO of Sierra.

Here are the details of Sierra's key team members:

Bret Taylor: Co-Founder of Sierra and founder of 2 other companies, FriendFeed and Quip.
Contact Info: 1 email address
Clay Bavor: Co-Founder of Sierra.
Contact Info: 1 email address

View details of Sierra's Founder profiles and Board Members

Sierra's employee count trend

Sierra has 628 employees as of Mar 26. Here is Sierra's employee count trend over the years:

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Top competitors of Sierra include Hyro, Rasa and LivePerson. Here is the list of Top 10 competitors of Sierra, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Hyro 2014, New York City (United States), Series C	Provider of an AI-based conversational platform	$115M	Healthier Capital, Hanaco Ventures & 16 others	70/100
2nd	Rasa 2016, San Francisco (United States), Series C	Developer of a platform for building and deploying AI agent solutions	$83.8M	PayPal Ventures, StepStone Group & 17 others	69/100
3rd	LivePerson 1995, New York City (United States), Public	Provider of conversational AI platform for digital customer and agent experiences	-	Alpha Venture Partners, Dell & 10 others	68/100
4th	Avaamo 2014, Los Altos (United States), Series A	Provider of conversational AI platform for enterprises	$23.5M	Clear Ventures, Wipro & 11 others	68/100
5th	Aisera 2017, Santa Clara (United States), Acquired	Provider of AI agent platform for enterprise automation	$150M	Thoma Bravo, Goldman Sachs & 16 others	67/100
6th	EliseAI 2017, New York City (United States), Series E	Offering conversational AI platforms	$392M	Sapphire Ventures, Andreessen Horowitz & 18 others	65/100
7th	Sierra 2023, San Francisco (United States), Series B	Developer of an AI agent operating system for customer experiences	$635M	Benchmark, Iconiq Capital & 3 others	70/100
8th	Poolside 2023, San Francisco (United States), Series B	Developer of artificial intelligence models and systems for software engineering	$626M	Bain Capital Ventures, Felicis Ventures & 30 others	63/100
9th	Maven AGI 2023, Boston (United States), Series B	AI-driven customer support platform for businesses	$78M	Dell Technologies Capital, M13 Company & 5 others	63/100
10th	11x 2022, London (United Kingdom), Series B	Developer of AI-powered digital workers for sales, RevOps, and go-to-market	$76M	Project A, Benchmark & 22 others	63/100