Sierra ブログ

2026年3月27日

Sierra、日本発のAI企業「OPERA TECH」を買収

本日、Sierraは東京を拠点とするエンタープライズAI企業、株式会社OPERA TECHを買収したことを発表いたします。

Text: Sierra acquires Opera Tech in Japan.

2025年11月5日

Sierra Agent OS 2.0: from answers to memory and action

At Sierra Summit, we unveiled the future of AI agents: a single agent that works across every channel, learns from every interaction, and builds real customer relationships. With eight new products, including Agent Studio 2.0 and the Agent Data Platform, Sierra is turning the promise of AI-powered customer experience into reality.

2026年3月25日

Agents as a Service

Sierra is reimagining software for the agent era—where you simply describe the outcome, and intelligent agents build, execute, and continuously improve the work for you. Meet Ghostwriter, the agent that creates and optimizes other agents, turning your ideas into production-ready customer experiences without clicks, code, or complexity.

2026年2月6日

Year two in review

Sierra is heading into year three with over $150M in ARR, powered by rapid adoption from some of the world’s largest companies. The growth reflects a simple idea: when AI is built around real jobs to be done (not experiments), even the biggest enterprises can see meaningful impact fast.

White text "Year two" on a grainy background with diagonal orange, yellow, and blue color gradients.

2025年11月5日

Introducing Agent Data Platform

Sierra’s first-of-its-kind Agent Data Platform (ADP) gives agents memory, context, and intelligence — turning every interaction into a human, personalized experience. Powered by Agent OS, ADP helps companies move from answering questions to anticipating needs.

Change agents: Rocket Mortgage

The journey home, powered by AI.

2025年10月27日

Change agents: Chime

Discover how AI is transforming CX from a cost center to a brand-building engine through faster, more personalized support at scale.

2025年10月23日

Introducing Sierra Summit 2025: the future of AI-powered customer experiences

Big things are coming at Sierra Summit 2025 — our first customer conference — where we’ll reveal new AI innovations and hear from leaders shaping how businesses grow through better, more human customer experiences. Request your spot today.

2025年10月14日

Voice turns one

One year after launching voice, Sierra is powering hundreds of millions of conversations — showing how natural conversation is fast becoming the most powerful customer interface.

2025年10月6日

There's an agent for that, and it runs on Sierra

Today, we’re announcing that we’ve raised $350M additional capital at a valuation of $10B, led by Greenoaks, which is doubling down on Sierra.

2025年9月4日

Gradient background with graduation cap icon

Calling new grads: APX year 2

Are you a college senior or recent graduate? If you’re driven to turn AI theory into practice, make an impact, and learn from some of the best in our industry, we’d love to build with you.

2025年9月2日

Sierra expands to New York

We’re excited to share that Sierra is opening a New York office, and we’re hiring across agent development and sales.

2025年5月7日

London calling

We are excited to announce that Suveer Kothari will be joining Sierra as head of our new(ish) London office, which serves companies across the UK and Europe.

2025年4月15日

Sierra acquires Receptive AI

We want to ensure that Sierra has the best voice capabilities, and it’s why we’re excited to have acquired Receptive AI. Their voice technology is already integrated into Sierra, enabling companies to build AI agents once and deploy them across any channel.

2025年3月26日

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