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.

Sierra achieves AIUC-1 certification

Sierra is now AIUC-1 certified, following an independent audit by Schellman and extensive testing by the Artificial Intelligence Underwriting Company (AIUC).

2026年9月17日

"Multimodal agents" on a blurry green and pink background

Next gen multimodal agents: an interface that morphs with the conversation

Sierra’s multimodal agents bring voice, text, and visuals into the same conversation, so customers get the best of each medium without having to pick just one.

2026年9月10日

White text "ττ-bench" on a blurry, grainy background transitioning from orange to yll.

Hyper-𝜏-bench: Evaluating agents that build agents

Today we’re open-sourcing hyper-𝜏-bench, a new long horizon agent evaluation that measures how well models can not only act as an agent, but construct one.

2026年9月8日

AI for call centers: an operating and rollout guide

Use a lifecycle map and go/no-go checklist to plan routing, workforce, technology controls, failover, and expansion for AI in the call center.

2026年9月4日

What is voice AI? An enterprise guide to AI voice agents

Learn how enterprise voice AI works and use seven call-readiness tests to evaluate hearing, latency, action, guardrails, and handoff.

2026年9月1日

Julia Brau Donnelly joins Sierra as Chief Financial Officer

We are excited to announce that Julia Brau Donnelly will be joining Sierra as our Chief Financial Officer.

2026年8月31日

Sierra launches in Korea on a blurred blue and red background

Sophisticated agents for the most demanding companies: Sierra launches in Korea

We are excited to announce that we are opening an office in Seoul. South Korea is home to some of the world’s most complex businesses, across the largest industries, and we’re looking forward to serving them.

2026年8月25日

The words "Release governance" on a blurred blue and brown background

Release governance: guardrails for agents at scale

Software teams don't ship without linting, code review, and canary deploys. Release governance brings that same discipline to Sierra: the checks, approvals, and staged rollouts that move a change safely from a builder's Workspace to a live customer conversation.

2026年8月20日

Building in Germany, Austria and Switzerland

We're excited to share that we are opening an office in Munich to serve companies across Germany, Austria and Switzerland.

2026年8月14日

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