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 1257 active competitors, including 138 funded and 40 that have exited. Its top competitors include companies like Hyro, EliseAI and Avaamo.
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
1st among 1257 active competitors
Employee Count
940 as on Jul 31, 2026
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 7 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 ProfileThe founders of Sierra are Bret Taylor and Clay Bavor.
Here 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 940 employees as of Jul 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 Hyro, EliseAI and Avaamo. 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 |  Sierra 2023, San Francisco (United States), Series E | A conversational AI platform that helps businesses to build customer experiences | $1.58B | 72/100 | |
2nd | Hyro 2014, New York City (United States), Series C | Provider of an AI-based conversational platform | $115M | 70/100 | |
3rd |  EliseAI 2017, New York City (United States), Series E | Offering conversational AI platforms | $392M | 69/100 | |
4th | Avaamo 2014, Los Altos (United States), Series A | Provider of conversational AI platform for enterprises | $23.5M | 66/100 | |
5th |  Sendbird 2013, San Mateo (United States), Series C | Developer of communication infrastructure and artificial intelligence customer service agents | $218M | 63/100 | |
6th | Provider of a platform for generating videos using artificial intelligence | $48M | 63/100 | ||
7th |  Maven AGI 2023, Boston (United States), Series B | Developer of an AI agent platform for customer experience automation | $78M | 62/100 | |
8th |  Quiq 2015, Bozeman (United States), Series C | Provider of AI-based chatbot platform for customer engagement | $47.5M | 61/100 | |
9th |  ZEALS 2014, San Francisco (United States), Series E | AI based conversational commerce platform | $51.2M | 61/100 | |
10th | Rasa 2016, San Francisco (United States), Series C | Developer of a platform for building and deploying AI agent solutions | $83.8M | 61/100 |
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Sierra's Investments and acquisitions
Sierra has acquired 2 companies including Takeoff and 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 19 events in the last 1 year, 7 of them have been about company updates and 6 about partnerships.
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CarMax Enhances Inbound Sales Call Experience with Sierra's AI Voice AgentsGlobeNewswire•Aug 06, 2026•CarMax, Sierra
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Plaid Integrates with Sierra AI Agents, Enabling Live Bank Account Access for CustomersPYMNTS.com•Aug 03, 2026•Plaid, Sierra
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SoftBank becomes Sierra's exclusive partner for AI customer service platformTelecompaper•Jul 14, 2026•Sierra
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Kraken Launches Autonomous Agents for Utility Customer Service in Partnership with SierraBusiness Wire•Jun 11, 2026•Kraken, Sierra
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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, Fragment
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