Sierra
Verified Oct 16, 2026 ActiveBranded chat and voice agents for customer service, sold on resolved outcomes rather than seats
Listed on EffectHub ·
Pricing
- Pricing model
- Contact sales
No public price on the site: Sierra describes outcome-based pricing, charging for resolutions or value delivered rather than seats, and every path leads to a sales conversation. There is no self-serve signup or free tier.
Use tool ↗About Sierra
Sierra builds customer-facing agents that carry a company's brand, follow its policies and complete tasks - order changes, billing, account updates - by connecting to the systems behind them, across chat, SMS, WhatsApp, email, voice and ChatGPT. Agents are assembled in Agent Studio or drafted by Ghostwriter from procedures and call transcripts, a context engine keeps customer memory across channels, and an insights layer offers conversation search, monitors, experiments and observability. Founded by Bret Taylor and Clay Bavor, the company lists Rocket Mortgage, Gap, SiriusXM, Hyatt, Uber, Vanguard and Santander among customers and holds SOC 2, ISO 27001, ISO 42001, HIPAA and PCI DSS certifications. Pricing is outcome-based and quoted; there is no public price list.
- Platforms
- Web · API
- API
- Yes
- Last verified
- Oct 16, 2026
Verified sources
- Homepage: chat and voice agents across chat, SMS, WhatsApp, email, voice and ChatGPT; Ghostwriter, Agent Studio, Horizon, Context Engine and Insights; outcome-based pricing with no price points; customers including Rocket Mortgage, Gap, SiriusXM, Hyatt, Uber, Vanguard and Santander; SOC 2, ISO 27001, ISO 42001, HIPAA, PCI DSS (15 October 2026)sierra.ai ↗
- About page: founded by Bret Taylor and Clay Bavor, began in San Francisco, offices in New York, Atlanta, London, Singapore, Tokyo, Paris, Madrid and Toronto (15 October 2026)sierra.ai ↗
- Terms name Sierra Technologies, Inc., 150 Sutter St. #690, San Francisco, CA 94104, California governing law (15 October 2026)sierra.ai ↗
Is Sierra legit?
We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.
- Domain registered
- Dec 16, 2017 (8 years ago)Registry record (RDAP), registrar GoDaddy.com, LLC, looked up Sep 6, 2026
- TLS certificate
- Issued by Google Trust Services, valid until Jan 8, 2027Seen in our own connection to the site on Oct 16, 2026
- Last checked
- Oct 16, 2026The site answered
- Operated by
- Sierra Technologies, Inc., United StatesOur research, card verified Oct 15, 2026
Pros & cons of Sierra
Sierra is the enterprise end of the support-agent market: the pitch is not a chatbot but an agent that can actually change an order or a policy inside your systems, priced on what it resolves. The customer list and the certification wall are real signals that large regulated companies have put it in front of their users. It is a procurement, not a purchase - no public price, no trial, and an integration project before anything goes live - so a company without a sizeable support operation has nothing to buy here.
Pros
- Agents take actions in order, billing and account systems, not just answer questions
- One agent runs across chat, SMS, WhatsApp, email, voice and ChatGPT
- Outcome-based pricing aligns the bill with resolutions
- Ghostwriter drafts agents from existing SOPs and transcripts, and the founders' track record is unusually strong
Cons
- No public pricing, trial or self-serve path
- Outcome pricing needs a contract definition of 'resolved' that favours neither side - read it closely
- Integration with core systems is a project with real lead time
- Vendor lock-in is high once customer memory and policies live in its context engine
Best for
- Consumer brands and financial-services companies with high-volume support across chat and voice
- Support leaders who want to pay per resolved case instead of per agent seat
- Regulated industries that need HIPAA, PCI and ISO 42001 attestations from the vendor
Not for
- Startups or SMBs that want to switch on a support bot this week on a card
- Teams whose support is mostly answering FAQs - outcome pricing only pays off when the agent completes transactions
Watch out: How a 'resolution' is counted decides the bill - a case that the agent closes but the customer reopens by phone may still be charged, so define the metric in the contract before signing.
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Sierra head-to-head
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