AI People Wiki
Portrait of Bret Taylor
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Builders & open source

Bret Taylor

Co-founder, Sierra

Bret Taylor is a co-founder of Sierra, a company that builds AI agents businesses use to serve their customers. Taylor previously served as co-CEO of Salesforce, founded Quip, and was CTO of Facebook, after starting a career at Google, where Taylor co-created Google Maps. Taylor also serves on the board of OpenAI.1

At a glance

Current role
Co-founder
Company
Sierra
Sector
Company
Fields
Agents
Education
Stanford
Work listed
2
Sources cited
4
Profile reviewed

Career

Taylor began at Google, where Taylor co-created Google Maps, and later served as CTO of Facebook. Taylor then founded the productivity company Quip and went on to serve as co-CEO of Salesforce.1

Taylor and Clay Bavor, who first met while working together at Google, co-founded Sierra to build AI agents for customer service and other customer conversations.1

Products and projects

Sierra builds AI agents that businesses deploy to talk with their customers. In a November 2025 post co-authored by Bret Taylor and Clay Bavor, Sierra described Agent OS 2.0 and eight new products launched at Sierra Summit, its first customer conference, including a move from separate channels toward a single agent.2

In September 2026 the co-founders wrote about Ghostwriter, Sierra's tool for building and deploying agents from prompts, becoming a proactive teammate. In October 2026 they announced Personal Agent Protocol, an open standard Meta and Sierra are developing with industry partners to define how personal agents authenticate and interact with businesses.34

Work and contributions

  • Google Maps

    Co-created Google Maps early in a career that began at Google, according to Sierra's founder biography.1

  • Personal Agent Protocol

    Co-author of the October 2026 announcement of an open standard, developed by Meta and Sierra with industry partners, for how personal agents interact with businesses.4

Timeline

  1. Co-authored the announcement of Sierra Agent OS 2.0 and new products from Sierra Summit.2
  2. Co-authored a post on Ghostwriter becoming a proactive teammate for agent builders.3
  3. Co-announced Personal Agent Protocol, an open standard for how personal agents interact with businesses.4

Other documented roles

Roles the sources document that are not confirmed as current.

  • Co-CEO, Salesforce1
  • Chief Technology Officer, Facebook1

Where they work

Suggest a correction or removal

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References

4 sources · profile reviewed Oct 21, 2026 · data updated Oct 21, 2026

  1. About Sierra — our foundersSierra · Official page · accessed Oct 21, 2026 · reviewed Oct 21, 2026
  2. Agent OS 2.0 (Sierra blog, by Bret Taylor and Clay Bavor)Sierra · Announcement · published Nov 5, 2025 · accessed Oct 21, 2026 · reviewed Oct 21, 2026
  3. Ghostwriter: from AI tool to teammate (Sierra blog, by Bret Taylor and Clay Bavor)Sierra · Announcement · published Sep 28, 2026 · accessed Oct 21, 2026 · reviewed Oct 21, 2026
  4. Introducing Personal Agent Protocol (Sierra blog, by Bret Taylor and Clay Bavor)Sierra · Announcement · published Oct 6, 2026 · accessed Oct 21, 2026 · reviewed Oct 21, 2026