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.

Gradient mixed colors, agent building icons

How Voice Sims work

Learn how Sierra engineered Voice Sims using a dual loop architecture to recreate lifelike conversations.

2025年9月23日

Meet Agent Studio: build sophisticated agents without code

Sierra's Agent Studio empowers teams of all technical abilities to build and ship highly-effective agents fast.

2025年9月18日

Meet the Voice Sommelier

Best practices for finding the right voice for your brand.

2025年9月17日

Voice Sims: test agents in real world conditions before they talk to customers

Sierra's Voice Sims is a pioneering feature that tests voice agents in real world conditions before they talk to a single customer.

2025年9月11日

Simulations: the secret behind every great agent

Sierra’s platform, Agent OS, enables you to create simulated conversations between agents and mock personas ensure reliability at scale. They are a new kind of testing, for a new kind of software.

2025年8月19日

Sierra is now ISO 42001 and ISO 27001 certified

We’re excited to share that Sierra is now certified by an accredited certification body to both ISO 27001 and ISO 42001.

2025年7月8日

The challenge with rolling your own agent

Short “time to demo” masks the challenge of building agents that can reliably take action without supervision, safely represent a brand, and operate at the scale needed to handle millions of customer interactions a year.

2025年6月17日

The future is build with, not build versus buy

Sierra’s platform gives businesses the freedom to build as much or as little of their agent as they choose—from our Agent OS, which handles all the under the hood complexity, while giving brands complete control over the parts that are unique to their business, to our expert team of engineers and product managers, which help launch agents quickly, and ensure they improve over time.

2025年6月17日

Building more human voice experiences

Here are three lessons we’ve learned building great voice experiences with our customers, for their customers. And what’s so interesting is that it’s many little things like these—not one big thing—that’s helped create a better, more human voice experience.

2025年5月22日

Sierra ブログを購読

新製品の機能や顧客のアップデートなどに関する通知を受け取ります。

Sierraでできることを、ぜひご覧ください

SierraがどのようにAIを活用し、より優れた人間味あふれる顧客体験の実現をお手伝いするのかをご紹介します。

詳しく見る