Sierra
Bret Taylor and Clay Bavor's enterprise AI agent platform for customer service, priced on outcome-based resolutions.
Last verified:
Sierra is an enterprise conversational AI platform founded in early 2024 by Bret Taylor (former Salesforce co-CEO, OpenAI chairman) and Clay Bavor (ex-Google), headquartered in New York with offices worldwide. Its products include Ghostwriter (natural-language agent building), Agent Studio, Explorer analytics, and Horizon for long-horizon planning, deployed across chat, voice, SMS, WhatsApp, and email for customers like SoFi, Ramp, Brex, ADT, and SiriusXM. Sierra popularized "outcome-based pricing," charging only when an agent resolves a query without human escalation, and had raised $635M total (most recently $350M in September 2025 led by Greenoaks at a $10B valuation) as of that round; buying requires a sales engagement and no public pricing or self-serve API/MCP surface was found.
Pricing
| Tier | Price | Key features |
|---|---|---|
| Custom / Enterprise | Custom | Ghostwriter (natural-language agent authoring), Agent Studio, Explorer analytics, Horizon long-horizon planning, Omnichannel (voice, chat, SMS, WhatsApp, email) in 59 languages |
Source: https://sierra.ai/blog/outcome-based-pricing-for-ai-agents
Agent-readiness
- Discoverability
- 60/100
- Machine-readable content
- 20/100
- Programmatic access
- 20/100
- MCP / agent support
- 10/100
- Self-serve transactability
- 10/100
- Transparency
- 30/100
Security & compliance
- SSO / SAML
- Not publicly documented
- Encryption at rest
- Yes
- Encryption in transit
- Yes
- Audit log
- Not publicly documented
- Pentest report
- Not publicly documented
"Not publicly documented" means Crail found no public evidence either way — not a confirmed absence. See our methodology. Trust center: https://trust.sierra.ai/.
FAQ
Does Sierra have a free tier?
No — Sierra does not offer a free tier as of 2026-07-27.
Can you buy Sierra without talking to sales?
No — Sierra requires a sales call to purchase.
Does Sierra have an official MCP (Model Context Protocol) server?
Not as of 2026-07-27 — no official MCP server was found.
What compliance certifications does Sierra hold?
Sierra holds: SOC 2, HIPAA, GDPR, PCI DSS Level 1, FedRAMP High, CCPA, CSA STAR, ISO 27001, ISO 42001.
Reviews
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Methodology & disclosure
Data verified via agent crawled, last checked 2026-07-27. Agent-readiness methodology version crail-ar-v0.1. No vendor payment influences these scores — see our methodology page.