Sierra Agent OS
PlatformSierraactive
Enterprise platform for building and operating customer-facing AI agents across chat, voice and digital channels with actions, memory, governance and outcomes-based pricing.
- Feb 13, 2024
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Products
| Name | Type | Category | Launched | Latest release | Status |
|---|---|---|---|---|---|
| Horizon Agents | Product | Long Horizon Agents | Jul 2026 | Sierra launches Horizon Agents | active |
| Ghostwriter | Product | Agent Builder | Mar 2026 | Ghostwriter expands to Slack and Teams | active |
| Sierra Agent Data Platform | Product | Agent Memory | Nov 2025 | Sierra launches Agent Data Platform | active |
| Sierra Agent Studio | Product | Agent Builder | Sep 2025 | Sierra launches Agent Studio 2.0 | active |
| Sierra Voice | Product | Voice AI | Oct 2024 | Sierra launches Voice | active |
| Sierra Agent SDK | Product | Agent SDK | — | — | active |
Releases
Nov 5, 2025Sierra launches Agent OS 2.0Feature update
Sierra unveiled Agent OS 2.0, expanding agents from answering questions toward persistent memory, cross-channel action and customer relationships.
Feb 13, 2024Sierra launches Agent OSProduct launch
Sierra publicly launched its enterprise platform for building customer-facing AI agents.