Founded Year

2023

Stage

Series C | Alive

Total Raised

$285M

Valuation

$0000 

Last Raised

$175M | 6 mos ago

Revenue

$0000 

Mosaic Score
The Mosaic Score is an algorithm that measures the overall financial health and market potential of private companies.

+45 points in the past 30 days

About Sierra

Sierra is a conversational artificial intelligence (AI) platform that provides AI agents for customer support across various business sectors. The agents engage in personalized interactions and can be integrated with existing call center technologies. The platform is designed to meet security and compliance requirements and can be tailored to the needs of clients. It was founded in 2023 and is based in San Francisco, California.

Headquarters Location

150 Sutter Street Suite 690

San Francisco, California, 94104,

United States

Loading...

ESPs containing Sierra

The ESP matrix leverages data and analyst insight to identify and rank leading companies in a given technology landscape.

EXECUTION STRENGTH ➡MARKET STRENGTH ➡LEADERHIGHFLIEROUTPERFORMERCHALLENGER
Enterprise Tech / Sales & Customer Service

The generative AI — customer support operations market offers solutions to improve customer support experiences and streamline operations. Generative AI automates and optimizes customer service using chatbots, virtual assistants, ticket routing, and response generation. These solutions use natural language processing and machine learning algorithms to understand customer queries, provide accurate …

Sierra named as Challenger among 15 other companies, including Microsoft, Cognigy, and Kore.ai.

Loading...

Research containing Sierra

Get data-driven expert analysis from the CB Insights Intelligence Unit.

CB Insights Intelligence Analysts have mentioned Sierra in 5 CB Insights research briefs, most recently on Feb 28, 2025.

Expert Collections containing Sierra

Expert Collections are analyst-curated lists that highlight the companies you need to know in the most important technology spaces.

Sierra is included in 6 Expert Collections, including AI 100 (2024).

A

AI 100 (2024)

100 items

G

Generative AI

1,299 items

Companies working on generative AI applications and infrastructure.

A

Artificial Intelligence

7,221 items

U

Unicorns- Billion Dollar Startups

1,270 items

A

AI Agents & Copilots Market Map (August 2024)

322 items

Corresponds to the Enterprise AI Agents & Copilots Market Map: https://app.cbinsights.com/research/enterprise-ai-agents-copilots-market-map/

A

AI agents

286 items

Companies developing AI agent applications and agent-specific infrastructure. Includes pure-play emerging agent startups as well as companies building agent offerings with varying levels of autonomy. Not exhaustive.

Latest Sierra News

Yahoo Is Still Here—and It Has Big Plans for AI

Mar 21, 2025

Even as Yahoo turns 30, CEO Jim Lanzone says the company is still in “building mode.” Save this story Save In September 2021, Jim Lanzone took over a company whose name once embodied the go-go spirit of the internet but had, over the years, become a joke: Yahoo. He accepted the CEO post from the new private-equity owner Apollo Global Management, which had bought the property from Verizon, the most recent and possibly most clueless caretaker (high bar alert) in a long series of management shifts. Visiting him at the company’s offices in New York City, I ask him why he took the job. “I love turnarounds,” he says. This is an essay from the latest edition of Steven Levy 's Plaintext newsletter. SIGN UP for Plaintext to read the whole thing, and tap Steven's unique insights and unmatched contacts for the long view on tech. Lanzone’s résumé confirms that. In 2001 he took over a sagging search property called AskJeeves—its share price was less than a dollar, down from a high of $196—and built it back to the point where Barry Diller’s IAC Corp bought it for $1.85 billion. At CBS Interactive and then CBS’s chief digital office during the 2010s, he yanked the stuffy Tiffany network into the streaming age. Yahoo, celebrating its 30th anniversary this month, might be his biggest challenge yet. Its history is pocked with missed opportunities, which explains in part why a public company once worth well over $100 billion was sold to a private equity firm for $5 billion in 2021. Yahoo famously passed on buying Google, and actually got Mark Zuckerberg to tentatively agree to sell Facebook for $1 billion before then CEO Terry Semel asked to renegotiate, which squelched the deal. Talent that walked out Yahoo’s door included the founders of WhatsApp. Promising acquisitions like Flickr , Tumblr and Huffington Post were ditched at fire-sale prices. In recent years Yahoo was a low-priority property for its owner, Verizon. Instead of trying to revive its purple glory, it merged Yahoo's assets with those of another failed icon, AOL, and dubbed the new brand Oath . Some pegged Lanzone’s chances at zero. “It’s hard to believe anyone else on the planet wants any part of his role, “ wrote George Bradt, one of those MBA types who churn out content for Forbes. Lanzone saw something different. In his view, Yahoo was an unacknowledged gem. “If you were able to take the name Yahoo off of it and look at the business in 2021, you saw billions in revenue,” he says. Lanzone has little patience for exhuming past blunders. “I think the story of Yahoo's missed opportunities is tired,” he says. “It's boring.” Instead of crying over lost search glory, Lanzone concentrated on improving what Yahoo did. “We didn’t have to worry about what we weren’t,” he says. He got rid of money-losing units, like some nonperforming ad tech divisions, and quietly made some acquisitions to bolster the best properties, like Wagr, a sports betting app, to bring Yahoo Sports into the gambling age. He also brought in capable executives like former ESPN digital head Ryan Spoon, who now heads Yahoo Sports. He’s boosted profits and grown the company’s audience to the point where he says that Yahoo has performed the quickest return of any Apollo acquisition. Since Yahoo is private, the actual financials aren’t available. But Yahoo’s comms team provided me with a lengthy document packed with data to bolster Lanzone’s claim that Yahoo still has something to yodel about. Comscore, a marketing company that measures traffic, ranks Yahoo No. 1 in news, No. 1 in finance, and No. 3 in sports. It’s second only to Gmail in mail. He tells me that in the US alone, “hundreds of millions” of people use Yahoo every month. A year after Lanzone took the job, the entire tech world was turned around by the appearance of ChatGPT. In previous transformations like search, social, and mobile, Yahoo has a near-perfect record of botching these moments. Lanzone says Yahoo won’t be creating its own language models or dropping $100 billion on data centers, but he believes the company will seize the moment nonetheless. “I’d like to automate the word ‘AI’ so I don’t have to say it so much,” he says. Yahoo has in-house machine-learning talent and draws on outside companies for AI technology. For instance, it partners with the startup Sierra for robot customer service agents. One of Lanzone’s canniest AI moves was acquiring Artifact, the AI-powered news aggregator created by Instagram cofounders Kevin Systrom and Mike Krieger. When the pair decided it would not become a viable business, they announced its closure and Lanzone was among multiple suitors vying for the underlying technology. It became the centerpiece of the homepage that Yahoo relaunched earlier this year. “Instead of incorporating their technology into our product, we did it the other way,” Lanzone says. “Essentially Yahoo News is now Artifact.” Systrom approves. “We partnered with Yahoo because they made a strong offer, but also because they planned on deploying our hard work to many millions of people,” he says. Next up for an AI-driven remake is Yahoo Finance, the leader among consumer investment tools and arguably the company’s crown jewel. Lanzone says he’s already gotten a boost from product refinements. Yahoo is no longer trying to compete with CNBC on finance news, he says, and is focusing more on data. But a bigger reinvention is in the works. “You're going to make more money, you're going to save more money, and we will use AI to do that for you,” he says. I’m not sure, though, that when we use a Yahoo service like Finance or Weather that it means a sudden affection for the color purple, which the company still uses in its branding. When I suggest that Yahoo is less than the sum of its parts, Lanzone pushes back, saying that a Yahoo Finance user will get drawn into the Yahoo-sphere and use other services. Bolstering the effort is a nod to 2025 behavior: Yahoo has made deals with over 100 influencers to help establish it as a home for viral content. In a sense, he says, the company is returning to its early mission of delivering the bounty of the internet to a mass audience. In a symbolic reunion, he recently hosted cofounder Jerry Yang at an all-hands, implying a restored legacy. “Why were people coming to Yahoo as a portal? Why did they love it so much? Why was it so useful to them?” he asks. “You can actually serve the users’ daily needs, which starts the minute they wake up with weather and news, and then the things they need to know and their communications tools.” Silicon Valley’s general belief is that all those things will soon be satisfied by near-omniscent chatbot agents, not homepages. Lanzone wields Yahoo’s uptrending metrics and says not so fast. Lanzone is coy about his endgame. “Yahoo is the same as any late-stage pre-IPO company,” he says. “For that, there are only three outcomes: you get bought, there’s an IPO, or you stay private forever. We have nothing to announce—we're in building mode.” But you don’t need a betting app to handicap those outcomes. Staying private forever seems unlikely: When Apollo made the sale, partner Reed Rayman, who is now Yahoo’s chair, said Lanzone would “steward Yahoo through a transformational stage.” In the current bummed-out financial environment, a near-term IPO doesn’t seem in the cards. But if the Trump administration decides to sleep on merger oversight, one of the giants might snap up the company. Remember when Microsoft tried to buy t he struggling company for almost $50 billion in 2008? Note that Microsoft already handles Yahoo’s search index and much of its generative AI. For now, Lanzone seems happy to continue the turnaround. Around a decade ago, Yahoo made a long-term deal with the 49ers mandating that after every touchdown, the screens would show the Yahoo exclamation point and lead the crowd in the yodel made familiar by countless TV ads. Soon after Lanzone became CEO, he was in the stands when Christian McCaffrey scored, and 80,000 people yodeled approval. One doubts they were thinking about portals and turnarounds, but Lanzone thought otherwise. “It just hit me,” he says “There’s a lot of latent love for this brand.”

Sierra Frequently Asked Questions (FAQ)

  • When was Sierra founded?

    Sierra was founded in 2023.

  • Where is Sierra's headquarters?

    Sierra's headquarters is located at 150 Sutter Street, San Francisco.

  • What is Sierra's latest funding round?

    Sierra's latest funding round is Series C.

  • How much did Sierra raise?

    Sierra raised a total of $285M.

  • Who are the investors of Sierra?

    Investors of Sierra include ICONIQ Capital, Greenoaks, Thrive Capital, Sequoia Capital and Benchmark.

  • Who are Sierra's competitors?

    Competitors of Sierra include Moveworks and 8 more.

Loading...

Compare Sierra to Competitors

Leena AI Logo
Leena AI

Leena AI specializes in providing an autonomous agent for enterprises and focuses on enhancing productivity and efficiency across IT, HR, and finance departments. The company's main offering includes a Gen AI-powered agent that reduces the volume of support tickets by enabling a 70% self-service ratio for enterprise employees. Leena AI's solutions integrate with existing knowledge bases to centralize information access, identify knowledge gaps, and create content to address recurring issues. It was founded in 2015 and is based in San Francisco, California.

Aisera Logo
Aisera

Aisera is an artificial intelligence (AI) service management (AISM) platform that operates in the enterprise service management domain. The company offers a solution that automates service desk operations across various functions such as information technology (IT), human resources (HR), finance, legal, facilities, and customer service. Aisera's platform integrates with existing enterprise systems to provide a unified view of business knowledge and enables the deployment of autonomous agents that adhere to data security and compliance standards. It was founded in 2017 and is based in Palo Alto, California.

E42 Logo
E42

E42 is a cognitive process automation platform that builds AI co-workers for enterprise process automation across functions. The company provides a platform that enables the creation and deployment of AI solutions to automate tasks in HR, marketing, finance, IT operations, and customer service. E42's AI co-workers are designed to enhance efficiency and accuracy in enterprise operations. It was founded in 2012 and is based in Pune, India.

Senseforth Logo
Senseforth

Senseforth provides conversational AI solutions for various business sectors. It offers a platform for developing AI-powered virtual assistants, speech analytics, semantic search, and agent assist tools. Senseforth's technology is used across industries such as banking, insurance, healthcare, and retail. It was founded in 2017 and is based in Bengaluru, India.

Konverso Logo
Konverso

Konverso develops a conversational AI platform using generative AI technology. The company provides products such as virtual agents, agent assist, intelligent routing, and RFP response automation, aimed at IT, HR, and customer support functions. Konverso's solutions utilize natural language processing and machine learning to offer user experiences. It was founded in 2017 and is based in Boulogne-Billancourt, France.

Uniphore Logo
Uniphore

Uniphore operates as an enterprise artificial intelligence (AI) and focuses on customer and employee experiences. The company offers various products such as conversational AI, emotion AI, generative AI, and workflow automation for interactions and processes. It caters to industries such as banking, healthcare, telecom, and more. The company was founded in 2008 and is based in Palo Alto, California.

Loading...

CBI websites generally use certain cookies to enable better interactions with our sites and services. Use of these cookies, which may be stored on your device, permits us to improve and customize your experience. You can read more about your cookie choices at our privacy policy here. By continuing to use this site you are consenting to these choices.