Releases

Sierra published the first draft of Personal Agent Protocol, code-named Poppy, and added 35 companies to the protocol's design process.

Sierra expanded Ghostwriter into Slack and Microsoft Teams as an always-on, proactive and asynchronous teammate.

Sierra added agents that can move between voice, text and interactive visuals in one conversation and deploy the same experience across channels.

Sierra launched Voice Personas so companies can design how an agent expresses a distinct brand personality.

Sierra launched long-horizon agents that orchestrate inbound and outbound interactions over days or weeks using persistent context and planning.

Sierra introduced an agent that creates, executes and continuously improves other customer-experience agents from described outcomes.

Sierra launched Agent Data Platform to provide agents with memory, context and intelligence across interactions.

Sierra unveiled Agent OS 2.0, expanding agents from answering questions toward persistent memory, cross-channel action and customer relationships.

Sierra launched Agent Studio 2.0 with more powerful journeys, integrations and release-management capabilities available through a collaborative interface.

Sierra launched a no-code environment that enables customer experience teams to build and manage AI agents.

Sierra launched full-duplex voice capabilities for customer-facing AI agents.

Sierra publicly launched its enterprise platform for building customer-facing AI agents.