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With AI, Everyone is a Dev. EveryDev.ai © 2026
    1. Home
    2. Developers
    3. Sierra

    Sierra

    Sierra helps businesses build better, more human customer experiences with AI agents that communicate across chat, voice, email, and messaging.

    Visit Website

    At a Glance

    1Tool Listed
    3Products
    7Capabilities
    Discussions
    San Francisco, CaliforniaHeadquarters
    2024Est.
    789Employees
    $1.585BRaised
    Focus Areas
    Conversational Agents
    Customer Engagement
    Agent Frameworks
    Connect
    Latest News
    AI-pilling our company: lessons learnedJul 9, 2026
    Takeaways from our Ghostwriter HackathonJul 1, 2026
    Markets
    • Enterprise
    • Retail
    • Telecommunications
    • Financial Services
    • +2 more

    AI Tools by Sierra

    (1)
    View Sierra
    Sierra tool icon

    Sierra

    AI Agent Platform for CX

    Conversational AICustomer Eng.Agent Frameworks

    Discussions

    No discussions yet

    Be the first to start a discussion about Sierra

    Latest News

    07/09/2026

    AI-pilling our company: lessons learned

    sierra.ai
    07/01/2026

    Takeaways from our Ghostwriter Hackathon

    sierra.ai
    06/30/2026

    Let your customers shape your agents (Agent Studio Experiments)

    sierra.ai
    05/04/2026

    Sierra raises $950 million Series E at $15.8 billion valuation

    sierra.ai

    Products & Services

    3
    Sierra AI Agent Platform
    Feb 2024

    A platform for building and deploying multichannel AI agents that handle customer interactions across voice, chat, email, and WhatsApp.

    Agent OS 2.0
    Nov 2025

    The underlying operating system for AI agents, featuring advanced memory and the ability to take actions within systems of record.

    Agent Studio
    Nov 2025

    A low-code environment for CX teams to build, manage, and monitor their AI agents.

    Market Position

    Sierra positions itself as the leading AI-native enterprise platform for customer experience, focusing on 'agents' that perform actions rather than just 'chatbots' that answer questions. It competes with legacy incumbents like Salesforce and newer AI entrants like Intercom and Ada.

    Leadership

    Founders

    BT

    Bret Taylor

    Former Co-CEO of Salesforce, CTO of Facebook, Co-founder of Quip, and co-creator of Google Maps. Currently Chairman of the Board at OpenAI.

    CB

    Clay Bavor

    Former VP at Google for 18 years, leading Google Labs, AR/VR (Project Starline, Google Lens), and Google Workspace (Docs, Drive, Gmail).

    Executive Team

    BT

    Bret Taylor

    Co-Founder

    Former Co-CEO of Salesforce and CTO of Facebook.

    CB

    Clay Bavor

    Co-Founder

    Former VP at Google leading Google Labs.

    Board of Directors

    BT
    Bret Taylor
    Co-Founder and Chairman
    CB
    Clay Bavor
    Co-Founder

    Founding Story

    Bret Taylor and Clay Bavor, who met at Google, founded Sierra on the belief that AI agents would transform enterprise software and customer experiences. They aimed to move beyond simple chatbots to sophisticated agents capable of reasoning, empathy, and executing complex tasks.

    Business Model

    Revenue Model

    Outcome-based pricing and enterprise subscriptions tied to real business value delivered (e.g., successful resolutions).

    Pricing Tiers

    Enterprise
    Starting at $150k/year

    Custom pricing based on scale and outcomes delivered.

    Private

    Target Markets

    Industries & Segments
    • Enterprise
    • Retail
    • Telecommunications
    • Financial Services
    • Healthcare
    • Consumer Services
    Use Cases
    • Customer service and support
    • Processing insurance claims
    • Order returns and tracking
    • Mortgage origination
    • Financial services inquiries
    • Healthcare scheduling
    Notable Customers
    • Sonos
    • DIRECTV
    • SiriusXM
    • CLEAR

    Quick Facts

    Headquarters
    San Francisco, California
    Founded
    2024
    Entity Type
    Inc.
    Employees
    789
    Total Funding
    $1.585 billion
    Investors
    Greenoaks, Tiger Global
    Office Locations
    New York
    Atlanta
    London
    Singapore
    +5 more

    Funding History

    Series E$950 million
    May 4, 2026
    $15.8 billion valuation
    Tiger Global
    GV
    Series D$350 million
    Oct 2025
    $10 billion valuation
    Greenoaks
    Series C$175 million
    Oct 2024
    $4.5 billion valuation
    Greenoaks

    History & Milestones

    May 4, 2026

    Raised $950 million Series E at a $15.8 billion valuation led by Tiger Global and GV.

    June 30, 2026

    Launched Agent Studio Experiments for A/B testing agent changes.

    Nov 5, 2025

    Sierra Summit 2025: Launched Agent OS 2.0 and Agent Studio 2.0.

    Oct 2025

    Raised $350 million at a $10 billion valuation led by Greenoaks.

    Feb 13, 2024

    Official launch with $110 million in funding led by Sequoia and Benchmark.

    Key Capabilities

    7
    Multichannel deployment (Voice, Chat, Email, WhatsApp)
    Human-level reasoning and natural language processing
    Support for 59 languages
    Secure integration with systems of record (CRM, Order Management, etc.)
    Outcome-based performance monitoring
    Agent Studio for low-code customization

    Integrations & Partnerships

    Platform Integrations

    • WhatsApp
    • Salesforce
    • Zendesk
    • Shopify
    • various Voice and Messaging channels

    Key Partnerships

    Strategic integrations with CRM and Order Management systems (Salesforce, etc.)

    Connect

    Website
    sierra.ai
    X / Twitter
    sierraplatform
    LinkedIn
    sierra
    YouTube
    @Sierra-Platform

    AI Topics

    3

    Sierra focuses on these topics:

    Conversational Agents(1)
    Customer Engagement(1)
    Agent Frameworks(1)
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