Sierra - About the company
Sierra is a series E company based in San Francisco (United States), founded in 2023 by Bret Taylor and Clay Bavor. It operates as an A conversational AI platform that helps businesses to build customer experiences. Sierra has raised $1.58B in funding from investors like Greenoaks, Sequoia Capital and Benchmark, with a current valuation of $15.8B. The company has 1005 active competitors, including 131 funded and 35 that have exited. Its top competitors include companies like Rasa, EliseAI and Hyro.
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:- High Tech > Generative AI > ***** **** > ***** ******
- Native AI > Generative AI > ***** **** > ***** ******
- High Tech > Chatbots > ***** **** > ***** ******
- High Tech > Agentic AI > ***** **** > ***** ******
- Native AI > Agentic AI > ***** **** > ***** ******
- Native AI > Artificial Intelligence > ***** **** > ***** ******
Company Details
A conversational AI platform that helps businesses to build 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
- Registered Address
- 150 Sutter St. #690 San Francisco, CA 94104
Key Metrics
Founded Year
2023
Location
San Francisco, United States
Stage
Series E
Total Funding
$1.58B in 4 rounds
Latest Funding Round
Post Money Valuation
$15.8B as on May 04, 2026
Ranked
4th among 1005 active competitors
Employee Count
749 as on Apr 30, 2026
Investment & Acquisitions
Legal entities associated with Sierra
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 | - | - | - |
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Sierra's funding and investors
Sierra has raised a total funding of $1.58B over 4 rounds. Its first funding round was on Feb 13, 2024. Its latest funding round was a Series E round on May 04, 2026 for $950M. 5 investors participated in its latest round. Sierra has 5 institutional investors.
Here is the list of recent funding rounds of Sierra:
Filter this list
Filter this listDate of Funding | Funding Amount | Round Name | Post-Money Valuation | Revenue Multiple | Lead Investors | Other Investors |
|---|---|---|---|---|---|---|
May 04, 2026 | $950M | Series E | $15.8B | - | ||
Sep 04, 2025 | $350M | Series B | $10B | - | - | |
Oct 28, 2024 | $175M | Series A | $4.5B | - |
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Sierra's founders and board of directors
Founder? Claim ProfileHere are the details of Sierra's key team members:
- Bret Taylor: Co-Founder & CEO of Sierra and founder of 2 other companies, Quip and FriendFeed. 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 749 employees as of Apr 26. Here is Sierra's employee count trend over the years:
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Sierra's Competitors and alternates
Top competitors of Sierra include Rasa, EliseAI and Hyro. Here is the list of Top 10 competitors of Sierra, ranked by Tracxn score:
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Rank | Company Details | Short Description | Total Funding | Investors | Tracxn Score |
|---|---|---|---|---|---|
1st | Rasa 2016, San Francisco (United States), Series C | Developer of a platform for building and deploying AI agent solutions | $83.8M | 72/100 | |
2nd |  EliseAI 2017, New York City (United States), Series E | Offering conversational AI platforms | $392M | 71/100 | |
3rd | Hyro 2014, New York City (United States), Series C | Provider of an AI-based conversational platform | $115M | 70/100 | |
4th |  Sierra 2023, San Francisco (United States), Series E | A conversational AI platform that helps businesses to build customer experiences | $1.58B | 71/100 | |
5th | LivePerson 1995, New York City (United States), Acquired | Provider of conversational AI platform for digital customer and agent experiences | - | 69/100 | |
6th |  11x 2022, London (United Kingdom), Series B | Developer of AI-powered digital workers for sales, RevOps, and go-to-market | $76M | 67/100 | |
7th | Avaamo 2014, Los Altos (United States), Series A | Provider of conversational AI platform for enterprises | $23.5M | 67/100 | |
8th |  Maven AGI 2023, Boston (United States), Series B | Developer of an AI agent platform for customer experience automation | $78M | 63/100 | |
9th | Provider of a platform for generating videos using artificial intelligence | $48M | 63/100 | ||
10th |  ZEALS 2014, San Francisco (United States), Series E | AI based conversational commerce platform | $51.2M | 62/100 |
Get insights and benchmarks for competitors of 2M+ companies! Sign up today!Looking for more details on Sierra's competitors? Click here to see the top ones
Sierra's Investments and acquisitions
Sierra has acquired Fragment. Sierra has not made any investments as of now.Reports related to Sierra
Here is the latest report on Sierra:
News related to Sierra
Filter this listMedia has covered Sierra for a total of 13 events in the last 1 year, 5 of them have been about company updates and 3 about partnerships.
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ibex and Sierra Announce Strategic Partnership to Enhance Customer Experience with AI AgentsDirectors Club•May 05, 2026•Sierra, IBEX Global
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AI Firm Sierra Leases 94K-SF Space at Rockrose Development's 11 East 26th StreetCommercial Observer•May 01, 2026•Sierra,
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Sierra to Open New Outdoor Gear Store at Lynnwood’s Alderwood Plaza in MayCRE Market Beat•Apr 20, 2026•Sierra, , Fragment
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Singtel Partners with Sierra to Transform Customer Engagement with AITelecomDrive•Mar 09, 2026•Sierra, Singtel
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R1 Announces Strategic Partnership with Sierra to Revolutionize AI-Driven Experiences in HealthcareGlobeNewswire•Oct 20, 2025•Sierra, R1 RCM
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AI Startup Sierra Technologies Completes $350 Million Funding Round, Valuation Exceeds $10 BillionCui Niuhui•Sep 04, 2025•Sierra, Google, Greenoaks, Salesforce and 9 others
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