Sierra

Sierra is a customer experience platform for AI agents across chat, email, voice, SMS, WhatsApp, and ChatGPT. Create, test, monitor, and govern personalized agents.

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Overview

Sierra is a customer experience platform for building and operating AI agents. The product pages describe it as a way to create agents that can answer customers, take actions, and deliver more personal support across channels.

The platform combines agent building, optimization, data connectivity, testing, monitoring, and trust controls. It is positioned for teams that need to deploy customer-facing agents across chat, voice, email, SMS, WhatsApp, and other channels while keeping behavior visible and manageable.

Core capabilities

Multi-channel deployment

Create a single agent experience that can run across chat, SMS, WhatsApp, email, voice, and ChatGPT, with support for 58 languages and 24/7/365 availability.

Agent building with Ghostwriter

Upload SOPs, transcripts, photos, audio recordings, or describe a goal in plain English, and Ghostwriter builds a multilingual, multichannel agent with guardrails.

No-code agent management

Use Agent Studio to define journeys, instructions, tools, dynamic data, knowledge, and branding without writing code, with real-time traces to debug behavior.

System and data connectivity

Connect structured data from systems of record and data warehouses, and use integrations to let agents take actions or hand off conversations with full context.

Testing and observability

Test and refine agents with simulations, AI-powered evaluations, regression testing, voice simulations, monitors, and experiments.

Personalization and proactive workflows

Use an agent data platform with memory, customer data, recommendations, and proactive engagement to personalize interactions based on conversation history and real-world signals.

Common use cases

Omnichannel customer support
Deploy a customer-facing agent that can answer routine questions, maintain a consistent tone, and operate across the channels your customers already use.
Task completion with business systems
Connect an agent to order management, CRM, or other systems of record so it can process tasks such as returns, claims, or account-related requests from start to finish.
No-code agent operations
Let CX teams configure journeys, knowledge, and brand guidelines without code, while using traces and simulations to refine behavior before release.
Personalized engagement
Use conversation history, customer data, and recommendations to tailor responses and trigger proactive next-best-action workflows based on real-world signals.
Validation and continuous improvement
Test agent changes with regression testing, voice simulations, monitors, and experiments before rolling updates into production.

Pros and Cons

Pros

Supports deployment across multiple customer channels, including voice, chat, email, SMS, WhatsApp, and ChatGPT.
Includes no-code tools for teams to build and manage agents without writing code.
Provides debugging, evaluation, monitoring, and experimentation tools for improving agent behavior.
Connects agents to external systems and knowledge sources so they can take actions and use current data.
Includes published security, compliance, and data-governance claims on the trust and reliability page.

Cons

The provided pricing page is not available, so public plan details, limits, and commercial terms are unclear from the source set.
Integration coverage is described in general terms, but the sources do not list every supported system or channel in detail.

FAQ

What is Sierra?

Sierra is a platform for building, optimizing, personalizing, and scaling AI agents for customer experiences. The source pages describe it as a way to deploy agents across channels, connect them to business systems, and manage them with guardrails, testing, and monitoring.

Which channels does Sierra support?

The product pages show Sierra agents across chat, SMS, WhatsApp, email, voice, and ChatGPT, with support for 58 languages on the product overview page.

Can non-developers use Sierra?

Agent Studio is designed for teams to build and manage agents without writing code. It includes journeys, agent instructions, tools and dynamic data, traces, knowledge management, simulations, and branding controls.

How does Sierra handle pricing?

The site says Sierra uses outcome-based pricing, meaning customers pay for the value delivered. The public pricing page itself is not available in the provided sources, so no specific plans or amounts are shown.

What security and compliance claims does Sierra make?

The trust and reliability page says Sierra maintains security and compliance standards including SOC 2, HIPAA, GDPR, PCI, FedRAMP High, CCPA, CSA STAR, ISO 27001, and ISO 42001.

Quick Facts

Category: AI customer experience platform
Primary users: Customer experience teams, with support for engineering and non-technical users
Main channels: Chat, SMS, WhatsApp, email, voice, and ChatGPT
Languages: 58 languages
Pricing model: Outcome-based pricing
Domain: sierra.ai