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.

Accelerators take care of the basics

Accelerators create and maintain workflows out-of-the-box along with basic integrations and guardrails, freeing up your team to focus on what truly differentiates your business.

2026年11月5日

The words "Redesigning agent studio" on a blurred blue and pink background

Redesigning Agent Studio around Ghostwriter

We’ve redesigned Agent Studio around Ghostwriter, so you can go from asking why resolution rates dropped to examining the conversations, updating a journey, and testing the fix — all in one conversation.

2026年11月2日

The words "Compliance Console" on a blurred yellow background

Introducing Compliance Console

Compliance Console gives companies the guardrails and controls to help their agents follow the rules that apply to them, across channels, use cases, states, and countries.

2026年10月28日

Text "τ-entity" in white, against a grainy, abstract background

𝜏-Entity: Can voice agents get the details right?

Today we’re introducing 𝜏-Entity, a benchmark that measures whether an agent can capture a detail correctly, recognize when it might be wrong, and repair the mistake.

2026年10月22日

Text "τ-i18n" in white, against a grainy, abstract background

𝜏-i18n: Evaluation across languages and beyond task completion

𝜏-i18n extends 𝜏-Voice to five more languages: Spanish, Brazilian Portuguese, Hindi, Korean, and Mandarin.

2026年10月21日

Sharing a draft of Personal Agent Protocol

Today we’re publishing a draft of Personal Agent Protocol, known as Poppy, and announcing additional 35 design partners.

2026年10月9日

Caller ID in the age of agents

Introducing fleming-1, Sierra’s own model for detecting when the caller on a phone call is another agent.

2026年10月8日

"Sierra Summit 2026 Recap" on a blurry blue background

Sierra Summit 2026: Bring us your hardest problems

AI is moving faster than anyone predicted. At Sierra Summit, we shared how Sierra helps companies stay on the frontier, stay in control as personal agents arrive, and turn customer context into a lasting advantage.

2026年10月6日

"Personal Agent Protocol" on a blurry green background

Introducing Personal Agent Protocol

We’re excited to announce Personal Agent Protocol — an open standard Meta and Sierra are developing along with industry partners at Genesys, Instinct, Rocket, Shopify, Stripe, and Walmart that defines how personal agents interact with businesses.

2026年10月6日

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