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.

Outcomemaxxing

The future of applied AI won’t be measured by consumption, but by outcomes achieved.

2026年6月3日

AI-native product localization

One Sierra engineer localized Agent Studio in four months — mostly solo, with AI coding agents. Here's what the process revealed about coordination overhead, feedback loops, and the changing shape of software engineering.

2026年5月28日

Sierra Lands in The 6

We're excited to share that Sierra has opened an office in Toronto — now with about a dozen employees, and a growing number of customers.

2026年5月21日

"The AI all-rounder" text on a warm, grainy gradient background.

Agent Strategist: Your PhD in applied AI

Meet the Agent Strategist. Last year, this role barely existed. Today, it’s our fastest-growing team.

2026年5月19日

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Voice AI is only as good as what it hears

We’ve built a transcription platform that dynamically routes across providers, incorporates a customer’s context, supports 70+ languages, and adapts to real-world variability, improving both agent effectiveness and customer satisfaction.

2026年5月18日

Text "τ-knowledge" in white, with a glowing 'e', against a grainy, abstract background of shifting pink, purple, and green tones.

𝜏-knowledge: benchmarking agents on real-world knowledge

𝜏-Knowledge measures how well agents can work through messy, evolving knowledge bases to complete complex, multi-step tasks. While models are improving, they still struggle to reliably use this information in practice, leaving a large gap to real-world performance.

2026年5月13日

White text reads "Monitoring the monitor" on a blurry blue and pink background.

Who monitors the monitors?

Sierra's always-on evaluation layer use an LLM-as-judge to review every conversation so businesses can track agent quality and customer sentiment. But who evaluates the monitors?

2026年5月7日

White text reads "Context engineering" on a blurry blue background.

Context engineering: the key to great agents

Getting LLMs the right context, at the right time, is the central challenge in building sophisticated, real-world agents. The solution: Context engineering.

2026年5月5日

Better customer experiences. Built on Sierra

We’re raising $950 million from new and existing investors, at a valuation of over $15 billion.

2026年5月4日

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