AI teammate design principles: Viewpoints

Bret Taylor, Clay Bavor

Ghostwriter is designed as a proactive teammate in Slack and Teams

The authors describe Ghostwriter’s move from a tool users actively prompt to a proactive, asynchronous, creative teammate that lives in Slack and Teams.

Ghostwriter: When AI goes from tool to teammateSep 28, 2026

Supporting evidence

Bret Taylor, Clay Bavor·Sep 28, 2026

Ghostwriter: When AI goes from tool to teammate

Original excerpt

We’ve transformed Ghostwriter from a tool you prompt to a teammate in Slack and Teams that’s always on, proactive, asynchronous, and creative.

Open original · Paragraph 4 Original text source

These findings reflect the available sources, not an exhaustive or current view.

AI teammate design principles

Viewpoint map

Ghostwriter is designed as a proactive teammate in Slack and Teams

Original conversations1

Ghostwriter: When AI goes from tool to teammate