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.

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

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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

Our partnership with Stripe on a blurred purple and blue background

From conversation to payment: Sierra and Stripe

Our partnership with Stripe allows customers to have a conversation, pay, and get their receipt all on the same call.

2026年10月20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

"Partner ecosystem" on a blurry blue yellow and green background

The Sierra partner ecosystem

Today we’re introducing Sierra’s partner ecosystem: the technology platforms, marketplaces, and service partners bringing Sierra to more businesses worldwide.

2026年10月6日

Sierra joins the OpenAI Marketplace

We’re excited to be a launch partner in OpenAI’s new marketplace. Now, eligible customers can build agents with Sierra using their OpenAI commitments.

2026年9月29日

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