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.

White text "τ-voice" on a blurry, grainy background transitioning from orange to purple.

𝜏-voice: benchmarking real-time voice agents on real-world tasks

𝜏-voice is a benchmark for real-time voice agents on 278 grounded customer-service tasks across retail, airline, and telecom. It pairs deterministic, end-to-end task scoring with realistic, controllable audio — diverse personas, environmental noise, and free-form turn-taking.

2026年5月1日

An industry first: Sierra launches fully PCI-compliant payments

Sierra is introducing the first Level 1 PCI-compliant payment capability for AI agents across chat and voice. Now, agents can handle the complete transaction within one conversation – no holds or transfers.

2026年4月7日

Meet Linnaeus and Darwin: Search models that drive higher resolution rates

Our purpose-built retrieval and reranking models outperform off-the-shelf ones, driving up to 16 percentage point improvements in resolution rates.

2026年4月3日

The word "Explorer" in white text on a blurry, grainy blue and brown background.

Explorer: The agent-optimizing agent

Explorer is Sierra's agent-optimizing agent — continuously analyzing conversations in the background, surfacing what's happening, why, and exactly what to do about it. Here's how hundreds of businesses are using it to continuously improve their agents and customer experience.

2026年4月1日

Agents as a Service

2026年3月25日

The text "τ³-Bench" on a blurry, grainy background of green and brown.

𝜏³-Bench: Advancing agent benchmarking to knowledge and voice

𝜏³-Bench is here. We've expanded agent evaluation to two new frontiers: knowledge retrieval and voice.

2026年3月18日

Text: "Expert Answers" on a blurry, grainy peach and blue background.

Expert Answers: Turn everyday support conversations into compounding knowledge

Expert Answers automatically generates and improves knowledge articles from resolved customer conversations, helping your AI agent deliver more accurate, up-to-date responses over time.

2026年1月22日

"Workspaces" text on a blue and orange gradient.

Workspaces: move fast without breaking things

Workspaces bring multi-player mode to agent development—letting teams build in parallel across code and no-code, test thoroughly, merge safely, and release with full control.

2025年12月18日

Visual Attachments: A new dimension for chat agents

Chatting with an agent shouldn’t feel like decoding a wall of text. Visual attachments make multi-step conversations easier to navigate, giving people a smarter, more intuitive way to move through a flow.

2025年12月9日

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