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Sierra

Sierra offers ai agents to enhance customer interactions across all channels.

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Pricing

Enterprise. Contact sales. You pay based on outcomes.

Overview

Sierra builds customer-service agents for large brands. You describe the job — or give it playbooks and call transcripts — and Ghostwriter builds an agent. People who are not engineers can do this. You pay based on outcomes.

Horizon is for longer work that takes more than one step.

Key features

  • Describe the job and Ghostwriter builds the agent
  • One agent across chat, SMS, WhatsApp, email, voice, and ChatGPT
  • Tools to watch live conversations and test changes
  • Horizon for longer plans, memory, and follow-up
  • You pay based on outcomes

Use cases

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Last updated 2026-08-29