Bret Taylor’s Sierra buys YC-backed AI startup Fragment |

In Brief Posted: 2:00 PM PDT · April 23, 2026 Sierra, the customer service agent startup founded by Bret Taylor, announced on Thursday that it…

Sierra’s Bret Taylor says the era of clicking buttons is over |

10:20 AM PDT · April 9, 2026 Bret Taylor, co-founder and CEO of Sierra, a startup that builds customer service AI agents for enterprises, is…

Bret Taylor's Sierra reaches $100M ARR in under two years |

Sierra, a 21-month-old, San Francisco-based startup that builds customer service AI agents for enterprises, announced on Friday that it reached $100 million in annual revenue…