Fin
Intercom's AI customer-service agent that resolves support tickets across chat, email, voice, and social — billed per resolution, not per seat
USAGE-BASED Verified JUL 8, 2026
Sierra
Enterprise platform for branded customer-experience AI agents, billed on outcomes rather than seats or usage
Sierra, founded in 2023 by former Salesforce co-CEO Bret Taylor and ex-Google VP Clay Bavor, builds branded AI agents that resolve customer support, take actions in business systems, and work across chat, voice, email, and SMS. It raised $950M at a $15.8B valuation in May 2026 and reports $150M+ ARR. Pricing is outcome-based and sales-led — you largely pay only when an agent resolves an interaction, with no public self-serve tier. Best for large enterprises, not individuals or small teams, and it is a customer-experience platform rather than a coding assistant.
Unverified JUL 14, 2026 CONTACT Live
What is Sierra?
Sierra is an enterprise platform for building, deploying, and operating branded AI agents that handle customer interactions. Founded in 2023 by Bret Taylor — co-creator of Google Maps, former Salesforce co-CEO, and chair of the OpenAI board — and Clay Bavor, a longtime Google VP, the company calls its product Agent OS. Rather than a simple chatbot, a Sierra agent can resolve support requests, manage subscriptions, process returns and payments, and originate transactions by taking actions directly inside a company’s business systems. Agents run across chat, SMS, WhatsApp, email, voice, and ChatGPT, all driven from a single agent definition with deterministic guardrails that constrain what the agent is allowed to do.
Sierra’s defining commercial idea is outcome-based pricing. Instead of charging per seat or per message, it charges primarily when an agent achieves a measurable result — a resolved ticket, a saved cancellation, an upsell — and in most cases charges nothing when a conversation goes unresolved. The company differentiates by building and running the agents for its customers rather than shipping a bare toolkit. Backed by a $950M round at a $15.8B valuation in May 2026 and reporting more than $150M in ARR, Sierra has been adopted by over 40% of the Fortune 50, including Rocket Mortgage, Wayfair, SiriusXM, Sonos, and WeightWatchers. Supporting tooling includes Ghostwriter, an agent that builds other agents from SOPs or transcripts; an Agent Data Platform that connects to data warehouses and holds agent memory; and an insights suite for monitoring, experimentation, and observability.
Who is it for?
Sierra is built for large enterprises with high volumes of customer interactions and clearly measurable support outcomes — the kind of organization that can justify a sales-led, six-figure annual contract and wants a partner to design and operate customer-facing agents rather than assemble them in-house. Because there is no public pricing, no free tier, and no self-serve signup, it is a poor fit for individuals, startups, and small teams, and it is not a coding or general-purpose assistant.
- Enterprise customer-experience and support leaders who want to automate tier-1 support, deflect cancellations, and take real actions in business systems while keeping human agents for edge cases.
- Companies in regulated industries (financial services, healthcare, telecom) that need SOC 2, ISO 27001, HIPAA, GDPR, and PCI DSS coverage baked into their AI deployment.
- Organizations that prefer buying outcomes over software and want billing tied to resolved interactions rather than seats or token usage.
- Large brands with multi-channel customer contact across voice, chat, email, and messaging that want consistent agent behavior from one definition.
How much does Sierra cost?
Starting price: Custom · Free tier: no · Model: contact
Pricing verified JUL 14, 2026
Price history tracked from June 2026
| Plan | Price | Includes |
|---|---|---|
| Custom | Custom | Outcome-based pricing — you largely pay per resolved outcome, not per seat or token · No charge in most cases when a conversation is unresolved · Sales-led, annual enterprise contracts (third parties estimate low-to-mid six figures per year) · Implementation, agent design, and ongoing optimization included · Multi-channel deployment across chat, voice, email, SMS, and messaging apps · Enterprise security and compliance (SOC 2, ISO 27001, HIPAA, GDPR, PCI DSS) |
What are Sierra's key features?
- Agent OS — a platform to build, deploy, monitor, and optimize customer-facing AI agents
- Ghostwriter, an agent-building agent that generates production-ready, multilingual agents from SOPs, transcripts, or plain-English descriptions
- Agent SDK with declarative goals and deterministic guardrails to constrain agent behavior
- Multi-channel deployment: chat, SMS, WhatsApp, email, voice, and ChatGPT
- Agent Data Platform that connects to data warehouses (Snowflake, Databricks, BigQuery) and maintains agent memory
- Insights suite — Explorer analytics, Monitors, Experiments, and tool-call/latency observability
- Supervisory agents that watch live conversations and flag ones needing attention
- Deep enterprise integrations with Zendesk, Salesforce, and contact-center platforms via API
What people use Sierra for
- 01 Automating tier-1 customer support so an AI agent resolves common tickets without human escalation
- 02 Taking actions inside business systems — processing returns, managing subscriptions, or handling payments during a conversation
- 03 Deflecting subscription cancellations with a retention agent that resolves the underlying issue
- 04 Running customer-facing agents across voice, chat, email, and SMS from a single agent definition
- 05 Monitoring and improving live agent performance with multivariate experiments and observability tooling
Pros and cons
| Pros | Cons |
|---|---|
| Outcome-based pricing aligns cost with delivered value — you largely pay only for resolved interactions, not access | No public pricing and no self-serve tier — every deployment requires a sales conversation |
| Agents take real actions in business systems (returns, subscriptions, payments), not just answer FAQs | Enterprise-only: sales-led annual contracts (reportedly low-to-mid six figures) put it out of reach for individuals and small businesses |
| Sierra builds and operates the agents for you rather than handing over a raw toolkit, lowering the setup burden | Outcome-based billing needs clearly defined, measurable outcomes, which can be hard to agree on for complex support flows |
| Extensive enterprise compliance coverage (SOC 2, ISO 27001, ISO 42001, HIPAA, GDPR, EU AI Act, FedRAMP, PCI DSS) | Not a coding assistant or general chatbot — it is narrowly a customer-experience platform, so it is the wrong tool for developer or writing workflows |
| Founded and led by proven enterprise operators with adoption across 40%+ of the Fortune 50 |
What are the best Sierra alternatives?
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Head-to-head comparisons
Frequently asked questions
How much does Sierra cost?
Sierra does not publish pricing. It uses an outcome-based, sales-led model where you largely pay when an agent resolves an interaction rather than per seat or per message. Third-party estimates put annual enterprise contracts in the low-to-mid six figures, but only Sierra's sales team can quote an actual figure for your volume.
What is outcome-based pricing?
Instead of charging for software access (per seat) or usage (per token or message), Sierra charges primarily when an agent achieves a defined result — such as a resolved support ticket, a saved cancellation, or a completed upsell. In most cases there is no charge when a conversation is left unresolved.
Is there a free trial or free tier?
No. Sierra is an enterprise platform with no free tier and no public self-serve signup. Evaluation happens through a sales-led process rather than a self-service trial.
Who founded Sierra?
Sierra was founded in 2023 by Bret Taylor — co-creator of Google Maps, former co-CEO of Salesforce, and chair of the OpenAI board — and Clay Bavor, a longtime Google VP who led its virtual and augmented reality efforts.
Is Sierra a coding tool like Cursor or Claude Code?
No. Sierra is a customer-experience agent platform for support, retention, and account management. It is not a coding assistant and does not compete with developer tools; it competes with customer-service agent platforms.
What channels and systems can Sierra agents work with?
Sierra agents deploy across chat, SMS, WhatsApp, email, voice, and ChatGPT, and can take actions inside business systems — processing returns, managing subscriptions, and completing payments — through integrations with platforms like Zendesk and Salesforce.
What kind of company is Sierra a fit for?
Large enterprises with high customer-interaction volume and clearly measurable support outcomes. Sierra reports adoption across more than 40% of the Fortune 50 in sectors like financial services, healthcare, telecom, and retail.