Bret Taylor

Bret is Co-Founder of Sierra. Most recently, he served as Co-CEO of Salesforce. Prior to Salesforce, Bret founded Quip and was CTO of Facebook. He started his career at Google, where he co-created Google Maps. Bret serves on the board of OpenAI.

Articles de Bret Taylor

The word "Personas" on a blurred red, yellow and pink background

Introducing Voice Personas

What an agent does and how it expresses itself are two different things. Today, we’re launching Voice Personas so you can design both.

7 août 2026

The word "Horizon" on a blurred blue background

The next Horizon in agents

Horizon agents orchestrate outbound and inbound interactions over days or weeks — not just single conversations. A context engine and long-horizon planning turn every interaction into a compounding advantage, so your agents get smarter as your customer relationships deepen. It's Sierra's outcomes-based model at scale: you pay for results, not tokens.

16 juillet 2026

Certified FedRAMP® High

We're excited to share that Sierra has been certified FedRAMP® High — the standard for cloud companies working with U.S. federal agencies.

10 juin 2026

Better Customer Experiences Built on Sierra

De meilleures expériences client, avec Sierra

Nous levons 950 millions de dollars auprès de nos investisseurs historiques ainsi que de nouveaux (Tiger Global, GV) pour une valorisation de plus de 15 milliards de dollars.

4 mai 2026

Sierra acquires Fragment in France

We are excited to announce the acquisition of Paris-based Fragment, which helps businesses scale their operations using AI, freeing up employees to focus on higher value work.

23 avril 2026

Eric Eyken-Sluyters joins Sierra as President of Field Operations

We are excited to announce that Eric Eyken-Sluyters will be joining Sierra to lead our global Sales, Sales Engineering, and Partnerships teams.

1 avril 2026

Sierra acquires Opera Tech in Japan

Today, we’re announcing that Sierra has acquired Opera Tech, a Tokyo-based enterprise AI startup.

27 mars 2026

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.

25 mars 2026

White text "Year two" on a grainy background with diagonal orange, yellow, and blue color gradients.

Bilan de la deuxième année

Sierra aborde sa troisième année avec plus de 150 M$ d’ARR, portée par une adoption rapide au sein de certaines des plus grandes entreprises mondiales. Cette croissance repose sur une idée simple : lorsque l’IA est conçue autour de vrais besoins opérationnels, et non comme un terrain d’expérimentation, même les plus grands groupes obtiennent rapidement des résultats significatifs.

6 février 2026

Sierra and Stellarus: Advancing a new model for AI-powered healthcare member experience

Sierra is partnering with Stellarus to help health plans like Blue Shield of California deploy AI agents.

12 janvier 2026

Sierra atteint 100 M$ d’ARR en sept trimestres

Sierra vient d’atteindre 100 M$ d’ARR, sept trimestres après notre lancement en février 2024. Cette progression est nettement plus rapide que prévu et place Sierra parmi les éditeurs de logiciels d’entreprise à la croissance la plus soutenue de l’histoire.

21 novembre 2025

Change agents: Safelite

How Safelite is transforming auto glass services for customers and insurance partners.

18 novembre 2025

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.

5 novembre 2025

There's an agent for that, and it runs on Sierra

Today, we’re announcing that we’ve raised $350M additional capital at a valuation of $10B, led by Greenoaks, which is doubling down on Sierra.

4 septembre 2025

Gradient background with graduation cap icon

Calling new grads: APX year 2

Are you a college senior or recent graduate? If you’re driven to turn AI theory into practice, make an impact, and learn from some of the best in our industry, we’d love to build with you.

2 septembre 2025

Serving customer experience and engineering teams—all from one platform

Sierra’s Agent OS is the only platform that supports both no code and programmatic agent development. Our unique approach enables companies to mix and match—choosing the right approach for their business needs, and scaling their agent development as those needs evolve.

21 mai 2025

Sierra expands to New York

We’re excited to share that Sierra is opening a New York office, and we’re hiring across agent development and sales.

7 mai 2025

Change agents: Minted

Since we first started working together last year, AI has become central to Minted’s long-term innovation strategy—with information from AI conversations helping to inform their marketing, engineering, and product teams, as well as solving real customer needs with care and creativity.

24 avril 2025

Sierra acquires Receptive AI

We want to ensure that Sierra has the best voice capabilities, and it’s why we’re excited to have acquired Receptive AI. Their voice technology is already integrated into Sierra, enabling companies to build AI agents once and deploy them across any channel.

26 mars 2025

Announcing the Sierra APX program

The APX program is an 18-month rotational program that gives new graduates in computer science or a related field the opportunity to work closely with our customers, building AI agents as both an Agent Engineer and an Agent Product Manager.

12 novembre 2024

Sierra speaks

Voice is here. Sierra's AI agents can now engage consumers with rich, natural conversations over the phone—no wait times, no frustration. Learn how this new capability is reshaping the future of customer service.

9 octobre 2024

Le cycle de vie de développement d’un agent

Un agent IA autonome est un nouveau type de logiciel qui exige une approche différente du développement. Votre équipe peut s’appuyer sur une méthode intégrée, de la conception aux tests et à la gestion des mises en production, pour créer et faire évoluer des agents. Nous appelons cela le cycle de vie de développement des agents.

3 juin 2024

The Guide to AI Agents

AI agents are autonomous software systems that can reason, make decisions, and pursue goals with creativity and flexibility. They’ll soon be everywhere, helping consumers, employees, and businesses alike.

23 mai 2024

Meet Sierra, the conversational AI platform for businesses

13 février 2024

Bret Taylor

Articles de Bret Taylor

Introducing Voice Personas

The next Horizon in agents

Certified FedRAMP® High

De meilleures expériences client, avec Sierra

Sierra acquires Fragment in France

Eric Eyken-Sluyters joins Sierra as President of Field Operations

Sierra acquires Opera Tech in Japan

Agents as a Service

Bilan de la deuxième année

Sierra and Stellarus: Advancing a new model for AI-powered healthcare member experience

Sierra atteint 100 M$ d’ARR en sept trimestres

Change agents: Safelite

Sierra Agent OS 2.0: from answers to memory and action

There's an agent for that, and it runs on Sierra

Calling new grads: APX year 2

Serving customer experience and engineering teams—all from one platform

Sierra expands to New York

Change agents: Minted

Sierra acquires Receptive AI

Announcing the Sierra APX program

Sierra speaks

Le cycle de vie de développement d’un agent

The Guide to AI Agents

Meet Sierra, the conversational AI platform for businesses

Découvrez comment Sierra peut vous aider.

Articles de Bret Taylor

Introducing Voice Personas

The next Horizon in agents

Certified FedRAMP® High

De meilleures expériences client, avec Sierra

Sierra acquires Fragment in France

Eric Eyken-Sluyters joins Sierra as President of Field Operations

Sierra acquires Opera Tech in Japan

Agents as a Service

Bilan de la deuxième année

Sierra and Stellarus: Advancing a new model for AI-powered healthcare member experience

Sierra atteint 100 M$ d’ARR en sept trimestres

Change agents: Safelite

Sierra Agent OS 2.0: from answers to memory and action

There's an agent for that, and it runs on Sierra

Calling new grads: APX year 2

Serving customer experience and engineering teams—all from one platform

Sierra expands to New York

Change agents: Minted

Sierra acquires Receptive AI

Announcing the Sierra APX program

Sierra speaks

Le cycle de vie de développement d’un agent

The Guide to AI Agents

Meet Sierra, the conversational AI platform for businesses