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Sierra

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Contact CenterSoftwaresierra.aiSan Francisco, CA, United StatesUpdated

Sierra is a leading AI-powered platform that helps brands deliver human-centered customer experiences with scalable, secure, multi-channel agents.

Overview

Sierra is a leading AI-powered platform that helps brands design and deliver better, more human customer experiences through scalable, guardrailed agents across channels. By partnering with industry leaders, Sierra enables organizations to deploy, monitor, and continuously improve AI-powered customer experiences at scale, turning everyday interactions into measurable business outcomes. The platform emphasizes trust, safety, and governance, supporting a wide range of industries and customer journeys with memory, context, and analytics to ensure consistency and quality across touchpoints.

Mission statement

Sierra helps businesses build better, more human customer experiences with AI.

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What we offer

Ghostwriter

Empower teams to build and optimize AI agents effortlessly without coding.

Pricing not published

sierra.ai/product/ghostwriter

Agent Studio

Streamline AI agent development for effortless customer journey management.

Pricing not published

sierra.ai/product/agent-studio

Horizon

Drive high-value outcomes by coordinating interactions over extended periods with intelligent, memory-enabled agents.

Pricing not published

sierra.ai/product/horizon

Context Engine

Tailor customer interactions using comprehensive context and memory.

Pricing not published

sierra.ai/product/context-engine

Insights

Optimize agent performance and transform customer engagement using powerful analytics and insights.

Pricing not published

sierra.ai/product/insights

Explorer

Optimize agent performance by delivering actionable insights and recommendations from customer interactions.

Pricing not published

sierra.ai/product/explorer

Channels

Unify your customer interactions across various channels for better experiences.

Pricing not published

sierra.ai/product/channels

Trust and Reliability

Sierra ensures security and compliance for reliable AI interactions, protecting your data and enhancing trust.

Pricing not published

sierra.ai/product/trust-and-reliability

Market segments

Market size by segment

Growth potential (CAGR)

Agent lifecycle management

1.5 Billion USD40% CAGR

Platform and developer capabilities to design, version, test, and deploy AI agents, including git-native workflows, reusable agent templates, and rapid deployment pipelines.

Products: Agent Studio, Ghostwriter

Omnichannel customer engagement

8 Billion USD11% CAGR

Platforms that unify voice, chat, email, and messaging with shared context, intelligent routing, and agent interfaces to deliver consistent cross-channel experiences and personalized service.

Products: Channels, Agent Studio, Horizon

Marketing automation and orchestration

10 Billion USD12.5% CAGR

Automation and orchestration of outbound, nurture, and sequencing workflows using enrichment and event/signal-triggered outreach to improve engagement timing and scale.

Products: Horizon, Context Engine, Channels

Customer experience analytics and AI

17.75 Billion USD26% CAGR

Analytics and AI-driven insights, real-time dashboards, and intelligent routing used to measure, automate, and optimize customer journeys and agent performance.

Products: Insights, Explorer, Ghostwriter

Trust, safety and compliance

25 Billion USD12% CAGR

Security, governance, privacy, and reliability capabilities including data governance, PII protection, compliance certifications, supervisory models, and secure integrations.

Products: Trust and Reliability, Context Engine, Horizon

More information about our offering

Ghostwriter

Ghostwriter is the agent-building agent that enables customer-experience teams to create and optimize AI agents without code. It accepts prompts to define agent behavior, lets you build from SOPs, transcripts, and audio, and provides full transparency before publishing. It runs automated simulations to test agents, identifies edge cases, and can automatically refine agents after issues, facilitating ongoing improvements by scaling top interactions and applying recommendations to deliver production-ready customer experiences across channels.

Pricing not published

  • Streamline Agent Deployment
    Experience seamless agent creation and updates that require minimal manual intervention.
  • Continuous Agent Refinement
    Automatically enhance agent performance by addressing issues without manual input.
  • Simplify Agent Customization
    Define agent specifications intuitively, making changes without technical barriers.
  • Enhance Customer Interactions
    Utilize high-quality interactions to refine your agents and elevate overall performance.
  • Ensure Quality Control
    Validate agent functionalities consistently to maintain high-quality customer experiences.
  • Build Robust Agents
    Ensure agents are well-prepared to handle unexpected customer interactions.
  • Leverage Existing Resources
    Utilize your existing documentation to accelerate agent creation and enhancements.
  • Maintain Review Oversight
    Gain confidence through comprehensive reviews of your agent's setup prior to going live.

Agent Studio

Agent Studio enables customer-experience teams to build and manage AI agents without writing code. It helps design and deploy end-to-end customer journeys, configure knowledge content, run simulations, and enforce brand guidelines across channels. This product empowers teams to create seamless experiences that guide customers effectively throughout their interactions, ensuring a unified brand voice across all agent interactions.

Pricing not published

  • Enable Teams To Build Agents
    Facilitates the construction of agents by non-technical team members, thereby accelerating deployment and enhancing engagement.
  • Optimize End-To-End Experiences
    Allows teams to create seamless experiences that guide customers effectively throughout their interactions.
  • Maintain Rich Knowledge Bases
    Ensures agents have access to accurate and comprehensive information, enhancing the quality of customer interactions.
  • Ensure Brand Consistency
    Maintains a unified brand voice and values across all agent interactions, reinforcing brand identity.
  • Harden Agents Through Testing
    Ensures agents are robust and effective by conducting large-scale testing before going live.
  • Connect Seamlessly
    Facilitates interactions with various systems, enriching the agent's capabilities and improving customer support.

Horizon

Horizon enables long-horizon agents that coordinate outbound and inbound interactions over days or weeks. It orchestrates signals, plans next steps, and sustains work until a desired outcome is delivered, across channels and memory-enabled contexts. This platform ensures tasks are completed efficiently while building stronger relationships through proactive engagement and multichannel coordination.

Pricing not published

  • Coordinated Long-Term Engagement
    Horizon maintains engagement over multiple interactions, ensuring tasks are completed efficiently and building stronger relationships.
  • Value-Aligned Pricing Model
    Clients only pay for successful interactions and outcomes, providing a clear link between investment and results.
  • Enhanced Interaction Continuity
    By remembering previous interactions, agents deliver more personalized and relevant responses, fostering better customer experiences.
  • Timely Customer Interactions
    Horizon proactively reaches out to customers to address their needs before they escalate or become critical.
  • Seamless Channel Integration
    Customers can switch channels without losing context, making interactions feel more cohesive and responsive.
  • Respectful Customer Interaction
    Ensures customers' preferences are always considered, fostering trust and compliance.

Context Engine

Context Engine provides customer context and memory, binding systems of record to reveal full customer history and enabling AI to tailor decisions and actions based on this context across conversations. It enhances interactions through integration of customer history, ensuring continuity and personalization over time.

Pricing not published

  • Integrate Comprehensive Customer Histories
    Enhance interactions by connecting various systems to get a complete overview of customer interactions, enabling personalized engagement.
  • Optimize Customer Engagement Strategies
    Leverage AI algorithms to determine the most effective next step in customer interactions, leading to better outcomes.
  • Enable Continuity Across Interactions
    This feature allows agents to recall significant customer data, ensuring each conversation is informed by previous ones, enhancing user experience.
  • Engage Customers Seamlessly
    Integrate proactive measures to preemptively address customer needs, enhancing the overall experience and fostering loyalty.

Insights

Insights provides reporting, analytics, and observability to evaluate agent performance, uncover trends, and guide data-driven improvements. This product allows for the monitoring of essential performance indicators and offers automated tagging for real-time insights into customer interactions.

Pricing not published

  • Monitor Performance Effectively
    Monitor essential performance indicators like CSAT and case resolution to evaluate agent effectiveness.
  • Maximize Engagement
    Experiment with variations in agent behavior to enhance customer engagement and satisfaction.
  • Gain Insights Instantly
    Gain real-time insights about customer interests through automatic tagging and categorization of conversations.
  • Instant Data Exploration
    Easily explore and understand trends with just one click by digging deeper into specific data points.
  • Enhance Transparency
    Gain insights into agent actions and decisions to ensure accountability and foster a culture of continuous improvement.
  • Address Issues Promptly
    Proactively manage agent performance by spotting issues that require immediate attention through real-time monitoring.

Explorer

Explorer is the agent-optimizing agent. It provides proactive insights, pattern discovery, and deep-dive analyses of customer conversations, with seamless handoffs to implement improvements. This tool aids teams in uncovering significant patterns and implementing changes effortlessly for better results.

Pricing not published

  • Get Answers Instantly
    Explorer delivers immediate answers to complex questions using insights from cataloged customer conversations.
  • Implement Changes Effortlessly
    With one-click handoff, recommendations from Explorer are automatically sent to Ghostwriter for immediate application.
  • Reveal Key Insights
    Explorer identifies important patterns and signals in customer interactions that may not be immediately obvious.
  • Stay Informed Weekly
    Receive regular updates on performance trends and actionable insights to better align your strategies.
  • Collaborate Effectively
    Explorer allows team members to share findings and dive deeper into analyses without disrupting core data.
  • Conduct In-Depth Analysis
    Ask any question in natural language, and Explorer will analyze expansive datasets to present relevant findings.
  • Track Performance Gains
    Evaluate how implemented recommendations have directly improved customer experiences and agent efficiency.

Channels

Channels enables deployment of AI agents across voice, chat, email, and WhatsApp, delivering consistent experiences in multiple languages and touchpoints. The platform offers always-on availability and robust language support, ensuring effective communication across varying customer needs.

Pricing not published

  • Ensure Constant Accessibility
    Enable customers to reach your services any time of day, enhancing satisfaction and trust.
  • Create Consistent Brand Presence
    Deliver a seamless brand experience across all communication platforms, increasing engagement.
  • Reach Global Audience
    Communicate effectively with a diverse customer base in their preferred languages.
  • Enhance Brand Identity
    Tailor your agent's voice to reflect your brand, creating memorable interactions.
  • Engage Customers Visually
    Use multimedia content to enrich conversations and enhance customer understanding.
  • Expand Reach Effortlessly
    Unify first-party and third-party channels with a single integrated agent, enhancing accessibility.

Trust and Reliability

Trust and reliability cover security, governance, and compliance to protect data, ensure privacy, and maintain high performance. This suite addresses the need for secure integration, performance optimization, and adherence to industry compliance standards.

Pricing not published

  • Ensures Policy Compliance
    Sierra strictly follows your data governance policies, ensuring your data is used only as directed and never shared without consent.
  • Protects Customer Information
    All personal identifiable information shared with your agent is automatically encrypted and masked, maintaining customer confidentiality.
  • Maintains Compliance Standards
    Sierra is dedicated to upholding the highest industry compliance standards, ensuring all interactions are secure and reliable.
  • Facilitates Secure Transactions
    Designed to uphold the highest security standards, Sierra’s payment infrastructure allows secure and compliant handling of transactions.
  • Ensures Secure Connections
    Interactions with your systems are carefully managed to adhere to your security standards, enhancing overall trust.
  • Maintains High Availability
    Ensures continuous performance of your AI agent by switching LLM providers as needed, maintaining service quality.
  • Enhances AI Reliability
    Supervisory models mitigate risks associated with large language models, ensuring AI behaves predictably and safely.

Sources

Methodology and sourcing behind the figures and links shown above.

Agent lifecycle management

Estimate uses explicit AI agents and lifecycle-management market data in the search results. MarketsandMarkets projects the AI Agents market at USD 7.84B (2025) with 46.3% CAGR; application-lifecycle management (traditional ALM) is USD 4.77B (2025), and contract lifecycle management (CLM) shows a 2025 market ~USD 1.32B. Agent lifecycle management (agent-ALM) is a specialized subset of the broader AI agents and ALM markets (platforms, governance, CI/CD, testing, deployment). Assuming agent lifecycle platforms capture roughly 15–20% of the nascent AI Agents TAM in early commercialization, a 2025 market size near USD 1.5B is plausible. Growth potential is aligned with rapid AI-agent adoption (MarketsandMarkets’ 46% CAGR); tooling and governance adoption typically lag pure agent consumption, so a slightly lower but still very high CAGR (~40%) is applied here.

Omnichannel customer engagement

Estimated omnichannel customer engagement market derived as ~29–30% of broader customer engagement solutions market (reports in search results). Using Fortune Business Insights omnichannel share (~29.51% in 2026) applied to reported total market ranges (USD ~21–32B across sources) yields an addressable omnichannel segment around USD 6.4–8.4B; selected midpoint USD 8.0B. CAGR estimated at ~11% based on reported CES CAGRs (10.1%–15.3%) and expected slightly higher growth for omnichannel capabilities due to enterprise cloud/AI adoption and omnichannel imperatives.

Marketing automation and orchestration

Search results for the broader "marketing automation" category report 2024–2026 market sizes in the $6.6B–$11.2B range and forecast multi-year growth CAGRs of ~11.5%–14.2%. I selected a current addressable-market estimate of about $10.0B (midpoint of reported 2024–2026 values) and a representative growth potential of 12.5% CAGR, reflecting the consensus range across MarketsandMarkets, Precedence Research, Mordor Intelligence, and Statista for software and orchestration capabilities.

Customer experience analytics and AI

Estimate anchored to published AI-in-CX / customer experience analytics reports in the searchResults. The Business Research Company reports $17.75B (2025) for AI in customer experience; other sources show 2024–2026 values from $12.6B to $17.58B and AI-focused forecasts with CAGRs in the mid-20% range (26–27%). I use the $17.75B 2025 figure as the current-size estimate and a 26.0% CAGR consistent with multiple AI-focused forecasts in the results.

Trust, safety and compliance

Search results provided contained no explicit market-size or CAGR figures for the “Trust, safety and compliance” segment. I therefore estimated by aggregating adjacent sub‑markets that comprise the segment (governance/risk/compliance software, data governance & privacy management, PII protection, identity/secure integrations, and platform trust & safety/content moderation). Rough allocation used: GRC ~10B, data privacy/protection ~8B, IAM/secure integrations ~5B, trust & safety/moderation ~2B — totaling ~25B USD. Growth potential assumed in the low‑teens CAGR (~12%) based on sustained regulatory pressure, expanded privacy laws, cloud/SaaS adoption, and rising demand for content moderation and platform safety (which historically track higher growth than legacy enterprise software). Because the provided searchResults had no explicit market data, no external citations from them could be used to support numeric values.

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