**𝜏³-Bench: Advancing agent benchmarking to knowledge and voice**  
𝜏³-Bench is here. We've expanded agent evaluation to two new frontiers: knowledge retrieval and voice.  
March 18, 2026

**Expert Answers: Turn everyday support conversations into compounding knowledge**  
Expert Answers automatically generates and improves knowledge articles from resolved customer conversations, helping your AI agent deliver more accurate, up-to-date responses over time.  
January 22, 2026

**Workspaces: move fast without breaking things**  
Workspaces bring multi-player mode to agent development—letting teams build in parallel across code and no-code, test thoroughly, merge safely, and release with full control.  
December 18, 2025

**Visual Attachments: A new dimension for chat agents**  
Chatting with an agent shouldn’t feel like decoding a wall of text. Visual attachments make multi-step conversations easier to navigate, giving people a smarter, more intuitive way to move through a flow.  
December 9, 2025

**SiriusXM and Sierra announce a deeper collaboration with the launch of Agent Data Platform**  
SiriusXM will be the first business to adopt Sierra’s groundbreaking new Agent Data Platform.  
December 4, 2025

**Constellation of models: the architecture powering Sierra's agents**  
Agents built on Sierra are assembled from 15+ purpose-built models working in concert, so they can handle complex tasks with speed, precision, and on-brand execution.  
December 3, 2025

**Improving voice performance with post-training**  
Post-training helps our customers' voice agents achieve shorter, clearer, and more human-like conversations.  
November 12, 2025

**Sierra Agent OS 2.0: from answers to memory and action**  
At Sierra Summit, we unveiled the future of AI agents: a single agent that works across every channel, learns from every interaction, and builds real customer relationships. With eight new products, including Agent Studio 2.0 and the Agent Data Platform, Sierra is turning the promise of AI-powered customer experience into reality.  
November 5, 2025

**Introducing Agent Data Platform**  
Sierra’s first-of-its-kind Agent Data Platform (ADP) gives agents memory, context, and intelligence — turning every interaction into a human, personalized experience. Powered by Agent OS, ADP helps companies move from answering questions to anticipating needs.  
November 5, 2025