# Sierra

**Source:** https://www.startuphub.ai/startups/sierra-ai
**Profile type:** Startup

> Sierra builds AI agents that help leading brands deliver better customer experiences by increasing customer lifetime value and personalizing interactions across multiple channels.

## About

Sierra is a conversational AI platform designed for enterprise customer service. It enables companies to deploy branded AI agents that handle real-time queries, automate workflows, and execute actions such as updating CRM records or managing orders. The platform focuses on building AI agents that mirror brand voice, safeguard compliance and privacy, and integrate with enterprise systems for always-on support, aiming to move beyond basic chatbots by leveraging a multi-model architecture, guardrails, and supervision layers to reduce the risk of 'hallucinations' and ensure reliable, high-quality interactions at scale.

## Key facts

- **Slug:** sierra-ai
- **Website:** https://sierra.ai/
- **Location:** San Francisco, United States
- **Founded:** 2023-01-01
- **Employees:** 900
- **Operating status:** Active
- **Total funding:** $682M
- **Sectors / tags:** Conversational AI, AI Agent, Agentic AI, Customer Service Automation, Contact Center AI, Enterprise Software, Workflow Automation, Natural Language Processing, Generative AI, Large Language Model, Multimodal AI, Voice AI, Speech Recognition, Text-to-Speech, API Platform
- **Social:**
  - LinkedIn: https://www.linkedin.com/company/sierra
  - Twitter: https://x.com/sierraplatform

## Frequently asked

### What does Sierra do?

Sierra is a conversational AI platform designed for enterprise customer service. It enables companies to deploy branded AI agents that handle real-time queries, automate workflows, and execute actions such as updating CRM records or managing orders. The platform focuses on building AI agents that mirror brand voice, safeguard compliance and privacy, and integrate with enterprise systems for always-on support, aiming to move beyond basic chatbots by leveraging a multi-model architecture, guardrai…

### What is Sierra's valuation?

StartupHub estimates Sierra's effective valuation at $13.3B (range $9.3B to $17.3B, 36% confidence), based on comparable companies in the sector.

### How much funding has Sierra raised?

Sierra has raised a total of $682M in funding.

### Where is Sierra headquartered?

Sierra is headquartered in San Francisco, United States.

### When was Sierra founded?

Sierra was founded in 2023.

### What industry does Sierra operate in?

Sierra operates in Conversational AI, AI Agent, Agentic AI, Customer Service Automation, Contact Center AI, Enterprise Software.

### How many employees does Sierra have?

Sierra has approximately 900 people on record.

## JSON-LD

Structured data aligned with this page's `<script type="application/ld+json">` (included when the profile is server-rendered).

```json
{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "BreadcrumbList",
      "itemListElement": [
        {
          "@type": "ListItem",
          "position": 1,
          "name": "Home",
          "item": "https://www.startuphub.ai"
        },
        {
          "@type": "ListItem",
          "position": 2,
          "name": "Startups",
          "item": "https://www.startuphub.ai/startups"
        },
        {
          "@type": "ListItem",
          "position": 3,
          "name": "Sierra",
          "item": "https://www.startuphub.ai/startups/sierra-ai"
        }
      ]
    },
    {
      "@type": "ProfilePage",
      "@id": "https://www.startuphub.ai/startups/sierra-ai#webpage",
      "url": "https://www.startuphub.ai/startups/sierra-ai",
      "name": "Sierra - AI Startup Profile | StartupHub.ai",
      "description": "This is the official profile of Sierra. Sierra is a startup founded in 2023, operating in Conversational AI and AI Agent. Sierra builds AI agents that help leading brands deliver better customer experiences by increasing customer lifetime value and personalizing interactions across multiple channels. Headquartered in San Francisco, United States. The company has approximately 900 employees.",
      "dateModified": "2026-07-26T14:26:35.866+00:00",
      "mainEntity": {
        "@id": "https://www.startuphub.ai/startups/sierra-ai#organization"
      }
    },
    {
      "@type": "Organization",
      "@id": "https://www.startuphub.ai/startups/sierra-ai#organization",
      "name": "Sierra",
      "url": "https://sierra.ai/",
      "logo": "https://cdn.startuphub.ai/storage/v1/object/public/entity-images/logos/7fc86b7e-19a0-4e25-8936-efc75d740b0f-square.webp",
      "image": "https://cdn.startuphub.ai/storage/v1/object/public/entity-images/logos/7fc86b7e-19a0-4e25-8936-efc75d740b0f-square.webp",
      "description": "This is the official profile of Sierra. Sierra is a startup founded in 2023, operating in Conversational AI and AI Agent. Sierra builds AI agents that help leading brands deliver better customer experiences by increasing customer lifetime value and personalizing interactions across multiple channels. Headquartered in San Francisco, United States. The company has approximately 900 employees.",
      "sameAs": [
        "https://www.linkedin.com/company/sierra",
        "https://x.com/sierraplatform",
        "https://www.startuphub.ai/startups/sierra-ai"
      ],
      "foundingDate": "2023-01-01",
      "numberOfEmployees": {
        "@type": "QuantitativeValue",
        "value": 900
      },
      "address": {
        "@type": "PostalAddress",
        "addressLocality": "San Francisco",
        "addressCountry": "US"
      },
      "knowsAbout": [
        "Conversational AI",
        "AI Agent",
        "Agentic AI",
        "Customer Service Automation",
        "Contact Center AI",
        "Enterprise Software",
        "Workflow Automation",
        "Natural Language Processing",
        "Generative AI",
        "Large Language Model",
        "Multimodal AI",
        "Voice AI",
        "Speech Recognition",
        "Text-to-Speech",
        "API Platform"
      ]
    }
  ]
}
```