Sierra

Sierra is an enterprise platform for building, deploying, and optimizing conversational AI agents that handle customer experiences across chat, voice, email, and messaging channels. Founded by former Salesforce co-CEO and OpenAI board chair Bret Taylor and ex-Google executive Clay Bavor, it lets companies deploy brand-aligned AI agents that resolve customer issues end to end.

Sierra is a conversational AI company that helps enterprises build customer-facing AI agents through its Agent OS platform. Founded in 2023 by Bret Taylor (chair of OpenAI's board and former co-CEO of Salesforce) and Clay Bavor (former head of Google Labs), Sierra provides tools to create empathetic, brand-aligned agents that operate across voice, chat, SMS, WhatsApp, email, and ChatGPT, resolving customer requests like order returns, claims processing, and mortgage refinancing rather than simply deflecting them. The platform includes Ghostwriter (an agent that builds agents from SOPs and transcripts), Agent Studio for configuration, an Insights suite for analytics and experimentation, an Agent SDK for developers, and an Agent Data Platform for personalization and memory. Sierra is known for its outcome-based pricing model, in which customers pay primarily for successfully resolved interactions rather than per seat. The company has grown rapidly, surpassing $150M in ARR and serving more than 40% of the Fortune 50, including companies such as Rocket Mortgage, SiriusXM, Sonos, ADT, WeightWatchers, and SoFi.

Category

AI Agents & Orchestration

Pricing

Usage-based, Contact for pricing

Target Market

CIOs, CTOs, VP Customer Experience, Enterprise Developers, Heads of Customer Support

Founded

2023

Headquarters

San Francisco, United States

Customers

Serves more than 40% of the Fortune 50; hundreds of enterprise customers

• ✓
  Agent OS

  End-to-end platform for building, deploying, monitoring, and improving AI customer-experience agents.

• ✓
  Ghostwriter

  An agent-building agent that generates production-ready multilingual agents from SOPs, transcripts, and plain-English descriptions.

• ✓
  Omnichannel agents

  Agents operate across chat, SMS, WhatsApp, email, voice, and ChatGPT from a single configuration.

• ✓
  Insights suite

  Conversation analytics, monitors, multivariate experiments, and observability to find and suggest agent improvements.

• ✓
  Agent SDK & connectors

  Developer toolkit with prebuilt skills, guardrails, and connectors to integrate agents with enterprise systems and data.

• ✓
  Agent Data Platform

  Adds agent memory, customer data integration, and recommendations to deliver personalized, proactive engagement.

• •
  Customer support resolution

  Resolve order tracking, returns, troubleshooting, and account questions across channels without human agents.

• •
  Voice IVR replacement

  Replace traditional phone IVR systems with AI agents that pick up calls instantly and complete tasks.

• •
  Revenue and retention

  Extend agents beyond support to drive sales, reduce churn, and grow customer lifetime value across the lifecycle.

Sierra uses an outcome-based pricing model where customers pay primarily for successfully resolved interactions rather than per seat. Pricing is custom and not publicly listed; third-party estimates place enterprise contracts in the six-figure-plus annual range with substantial implementation fees.

This page was written from 7 sources, 5 on domains other than sierra.ai.

1. 1.sierra.ai — sierra.aivendor
2. 2.sierra.ai — better customer experiences built on sierravendor
3. 3.siliconangle.com — ai agent startup sierra valued 15b new 950m funding round
4. 4.sacra.com — sierra
5. 5.research.contrary.com — sierra
6. 6.cmswire.com — sierra ais 10b valuation marks a turning point for conversat
7. 7.fortune.com — bret taylor clay bavor ai startup sierra 110 million funding