# Sierra review > What Sierra costs, what its resolution-rate claims rest on, where it fits and where it does not. Scored on a published rubric, with every figure sourced. Published: September 18, 2026 · Updated: September 18, 2026 · Prices and figures verified: September 18, 2026 · By the ai-agents.reviews team This page was researched and drafted with AI assistance from the sources listed on it. We have not run hands-on tests of these products. Method: [How we review](https://ai-agents.reviews/en-us/how-we-review) Sierra, founded by Bret Taylor and Clay Bavor, sells AI agents for support, sales and retention to very large companies. Pricing is outcome-based and entirely by quote. It has the longest list of security certifications we found and publishes no prices, hosting regions or connector list. **Bottom line** - **Best for:** Very large consumer brands that want a managed build - **Not for:** Buyers who need to see a price, a region or an integration list before a sales call - **Price from:** Quote only - **The catch:** Unresolved conversations are free "in most cases", and some traffic is billed per conversation regardless of outcome. The billable outcome is defined contract by contract. ## Score breakdown **Score: 6.2/10** | Criterion | Weight | Level | What it means | | --- | --- | --- | --- | | Pricing transparency | 25% | 2/5 | Quote only, but the vendor documents its pricing model (for example per resolution or per outcome). | | Performance evidence | 25% | 4/5 | Figures from named customers in published case studies. | | Access and time to pilot | 20% | 2/5 | Sales-led, with a multi-month implementation. | | Channel and language coverage | 15% | 4/5 | Chat, email, and voice or messaging channels, with 30 or more languages. | | Control and compliance | 15% | 4/5 | Handoff, guardrails and testing or simulation tools; SOC 2 or ISO 27001; a GDPR data processing agreement. | > **Scored on a public rubric, from sources you can open.** Every score on this site comes from five published criteria: pricing transparency, performance evidence, access, coverage, and control. Each price and percentage comes from one product database and links to its source, so every page agrees with every other page. Rubric v1.0 · We have not run hands-on tests yet, and no page here claims we did. [Read the full method](https://ai-agents.reviews/en-us/how-we-review) ## Key facts - **Vendor:** [Sierra Technologies, Inc.](https://sierra.ai) - **Pricing model:** Quote only - **Price from:** Quote only - **Works on your existing helpdesk:** Yes - **Self-serve sign-up:** No - **Free trial:** Not documented - **Channels:** Chat, Email, Voice, SMS, WhatsApp - **Languages:** 55+ languages · German: Yes · Spanish: Yes - **EU data residency:** Not documented - **Compliance:** SOC 2 Type II, ISO 27001, ISO 42001, HIPAA, PCI DSS Level 1, FedRAMP High, GDPR, CSA STAR, AIUC-1 - **Integrations:** Not documented - **Named customers:** Singtel, WeightWatchers, Airtable, Nordstrom, Cigna, SoFi, SiriusXM, ADT **Strengths** - Named customers report strong results: Airtable 80%, Wilson 77%. - Chat, email, voice, SMS and WhatsApp in more than 55 languages. - SOC 2 Type II, ISO 27001, ISO 42001, HIPAA, PCI DSS Level 1 and FedRAMP High. **Weaknesses** - No price, minimum or procurement data is public. Contract estimates found online come from competitors' blogs, so we do not use them. - Hosting regions and EU data residency are not documented publicly. - No public list of helpdesk or CRM connectors; integration is built per customer. ## Pricing Sierra charges for outcomes agreed in the contract, such as a resolved conversation, a saved cancellation or an upsell, and says that in most cases unresolved or escalated conversations are not charged. Some interactions are billed per conversation. Analysts at Sacra describe multi-year agreements that bundle implementation services. No price is published. [Sierra pricing explained](https://ai-agents.reviews/en-us/pricing/sierra) · [AI agent cost calculator](https://ai-agents.reviews/en-us/tools/cost-calculator) ## Claimed vs reported performance | Reported figure | Source | Who says so | | --- | --- | --- | | 70% | WeightWatchers | Named customer | | 70% | Singtel | Named customer | | 77% | Wilson | Named customer | | 80% | Airtable | Named customer | Sierra publishes no average resolution rate. Named customers report 80% (Airtable), 77% (Wilson), about 70% in the first week (WeightWatchers) and more than 70% (Singtel). Sierra itself cautions that such results are not a forecast. All of these come from vendor-published case studies. > **For buyers in the United States** There is no federal AI law for customer service bots, but existing rules apply. The FTC treats misleading AI claims as deception, California requires bots to identify themselves when they are used to sell, and AI voices on outbound calls need consent under the TCPA. [AI customer service agents and the law in the United States](https://ai-agents.reviews/en-us/guides/ai-customer-service-agents-and-the-law) ## Verdict Sierra's customer list and certifications are the strongest in the category, and its go-lives of 4 to 10 weeks are quick for enterprise software. It scores low here on pricing and access because nothing can be verified without a sales process. If you are large enough to be a Sierra customer, you are large enough to demand the contract definitions in writing. ## Related pages - [Sierra pricing explained](https://ai-agents.reviews/en-us/pricing/sierra) - [The best Sierra alternatives](https://ai-agents.reviews/en-us/alternatives/sierra) - [Decagon vs Sierra](https://ai-agents.reviews/en-us/compare/decagon-vs-sierra) ## Frequently asked questions ### How much does Sierra cost? Sierra publishes no prices, and we found no procurement data. Figures quoted online come from competitors' blogs. Expect a negotiated, multi-year enterprise contract. ### What is outcome-based pricing at Sierra? You pay when the agent achieves a result defined in your contract, such as a resolved conversation. Sierra says unresolved conversations are not charged in most cases, and that some traffic is billed per conversation. ## Sources - [Sierra homepage](https://sierra.ai) — Sierra · September 18, 2026 - [Sierra product](https://sierra.ai/product) — Sierra · September 18, 2026 - [Sierra Voice](https://sierra.ai/product/voice) — Sierra · September 18, 2026 - [Agent SDK](https://sierra.ai/product/agent-sdk) — Sierra · September 18, 2026 - [Trust and reliability](https://sierra.ai/product/trust-and-reliability) — Sierra · September 18, 2026 - [Outcome-based pricing for AI agents](https://sierra.ai/blog/outcome-based-pricing-for-ai-agents) — Sierra · September 18, 2026 - [Sierra customers](https://sierra.ai/uk/customers) — Sierra · September 18, 2026 - [WeightWatchers customer story](https://sierra.ai/customers/weightwatchers) — Sierra · September 18, 2026 - [Better customer experiences, built on Sierra (funding announcement)](https://sierra.ai/blog/better-customer-experiences-built-on-sierra) — Sierra · September 18, 2026 - [AI for call centers](https://sierra.ai/blog/ai-for-call-centers) — Sierra · September 18, 2026 - [Sierra achieves AIUC-1 certification](https://sierra.ai/blog/sierra-achieves-aiuc-1-certification) — Sierra · September 18, 2026 - [Sierra company profile](https://sacra.com/c/sierra/) — Sacra · September 18, 2026 - [Sierra raises $950M as the race to own enterprise AI gets serious](https://techcrunch.com/2026/05/04/sierra-raises-950m-as-the-race-to-own-enterprise-ai-gets-serious/) — TechCrunch · September 18, 2026 --- Canonical: https://ai-agents.reviews/en-us/reviews/sierra