Releases
10 matching — model launches, API releases, product updates, financial events and news.
September 20261
Sep 28, 2026Ghostwriter expands to Slack and TeamsFeature update
Sierra expanded Ghostwriter into Slack and Microsoft Teams as an always-on, proactive and asynchronous teammate.
August 20261
Aug 7, 2026Sierra launches Voice PersonasProduct launch
Sierra launched Voice Personas so companies can design how an agent expresses a distinct brand personality.
July 20261
Jul 16, 2026Sierra launches Horizon AgentsProduct launch
Sierra launched long-horizon agents that orchestrate inbound and outbound interactions over days or weeks using persistent context and planning.
March 20261
Mar 25, 2026Sierra introduces GhostwriterProduct launch
Sierra introduced an agent that creates, executes and continuously improves other customer-experience agents from described outcomes.
November 20253
Nov 5, 2025Sierra launches Agent Data PlatformProduct launch
Sierra launched Agent Data Platform to provide agents with memory, context and intelligence across interactions.
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.
Nov 5, 2025Sierra launches Agent Studio 2.0Feature update
Sierra launched Agent Studio 2.0 with more powerful journeys, integrations and release-management capabilities available through a collaborative interface.
September 20251
Sep 18, 2025Sierra launches Agent StudioProduct launch
Sierra launched a no-code environment that enables customer experience teams to build and manage AI agents.
October 20241
Oct 6, 2024Sierra launches VoiceProduct launch
Sierra launched full-duplex voice capabilities for customer-facing AI agents.
February 20241
Feb 13, 2024Sierra launches Agent OSProduct launch
Sierra publicly launched its enterprise platform for building customer-facing AI agents.