Last updated 08-22-2026
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Sierra
Sierra deploys conversational AI agents that handle customer support across chat, SMS, WhatsApp, email, voice, and ChatGPT in 59 languages. Ghostwriter turns SOPs, transcripts, or plain-English goals into production agents with guardrails, while Horizon plans multi-week outcomes like mortgage origination or claims. You pay on an outcome-based model tied to resolved customer jobs, not per seat or token.
Most support bots answer FAQs and escalate. Sierra connects to order management, CRM, and other systems of record so agents can process returns, insurance claims, and account changes end to end. Outcome-based pricing means you pay when the agent completes defined valuable results, which is a different contract shape than per-resolution SaaS chat tools.
Fortune 50 brands in financial services, telecom, healthcare, and retail use Sierra when they need multilingual agents with observability, experiments, and a partner team for rollout. Product and ops teams build with Ghostwriter without waiting on engineering for every workflow change.
Deploy one agent across chat, SMS, WhatsApp, email, voice, and ChatGPT
Ghostwriter builds agents from SOPs, transcripts, photos, or plain-English prompts
Supports 59 languages with brand personas and voice controls
Horizon agents plan multi-week customer outcomes with long-horizon memory
Explorer analytics answers natural-language questions about conversation performance
Outcome-based pricing bills for completed valuable results, not seats or tokens
Used by 40% of the Fortune 50 according to Sierra marketing
Outcome-based contracts align spend with resolved customer jobs
Single agent spans voice and messaging without rebuilding per channel
Ghostwriter lets non-engineers ship guarded production agents quickly
Deep observability with Explorer, monitors, and multivariate experiments
Proven at Fortune 50 scale across regulated industries
No self-serve public pricing or instant signup
Enterprise sales cycle required before deployment
Outcome definitions must be negotiated upfront in each contract
What is Sierra?
Sierra is an enterprise conversational AI platform for customer experience. It builds agents that resolve support, sales, and service tasks across voice and digital channels with integrations into backend business systems.
How does Sierra pricing work?
Sierra uses outcome-based pricing where you pay when agents achieve defined valuable results, such as a completed return or resolved claim. Public list prices are not published; contracts are scoped with Sierra sales.
Which channels does Sierra support?
Sierra deploys the same agent across chat, SMS, WhatsApp, email, voice, and ChatGPT. Experiences stay consistent across channels and 59 supported languages.
What is Sierra Ghostwriter?
Ghostwriter is Sierra's agent-building agent. You upload SOPs, call transcripts, or describe goals in plain English and Ghostwriter produces a production-ready multilingual agent with guardrails and integrations.
Can Sierra connect to internal systems?
Yes. Sierra agents connect to systems of record such as order management and CRM platforms so they can process returns, insurance claims, mortgage steps, and other end-to-end workflows securely.
What is Sierra Horizon?
Horizon is Sierra's long-horizon agent layer for outcomes that unfold over days or weeks. It combines a context engine with proactive outreach so agents guide customers through complex processes like renewals or loan origination.