# The best Sierra alternatives

> The strongest alternatives to Sierra, ranked on a published rubric, with what each costs and when switching makes sense.

Published: 18 September 2026 · Updated: 18 September 2026 · Prices and figures verified: 18 September 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-gb/how-we-review)

The best alternatives to Sierra are Decagon, its closest rival, Ada for a lower and better-documented price, and Agentforce if your service already runs on Salesforce.

Teams look beyond Sierra mainly because nothing about its price, hosting or integrations can be checked without a sales process.

## Why teams look beyond Sierra

- You need to see a price, a hosting region or a connector list before engaging sales.
- The billable outcome is defined per contract, and you want a standard definition.
- You do not need a bespoke, vendor-managed build.

> **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-gb/how-we-review)

## The alternatives, ranked

### 1. Intercom Fin — 9.1/10

_Teams that want a price they can calculate today_

- **Price from:** US$0.99 per resolution
- **Pricing model:** Per resolution
- **Works on your existing helpdesk:** Yes
- **Self-serve sign-up:** Yes

Fin is the AI agent from the company formerly called Intercom, which renamed itself Fin in May 2026. It runs inside the Intercom helpdesk or on top of another one, charges US$0.99 per outcome, and documents more about its pricing, languages and certifications than any other product we reviewed.

> Public pricing and EU hosting, with similar top-tier certifications.

**The catch:** Customer silence for 24 hours is billed as a resolution, and so is a handoff to a human that you configured. Salesforce has agreed to buy the company.

[Read the review](https://ai-agents.reviews/en-gb/reviews/intercom-fin) · [Pricing explained](https://ai-agents.reviews/en-gb/pricing/intercom-fin) · [Alternatives](https://ai-agents.reviews/en-gb/alternatives/intercom-fin)

### 2. Ada — 7.4/10

_Mid-market and enterprise teams that want an agent on top of their current helpdesk_

- **Price from:** est. US$36,079 per year
- **Pricing model:** Quote only
- **Works on your existing helpdesk:** Yes
- **Self-serve sign-up:** No

Ada is a Toronto company whose agent works across messaging, email and voice on top of the helpdesk you already have. It sells by quote, but it is the one enterprise vendor with substantial procurement data: a median contract of US$72,000 a year across 114 purchases.

> A documented European storage option and a median contract of US$72,000.

**The catch:** Ada's own AI decides which conversations count as billable resolutions, and the contract allows the count to be calculated from a sampled rate.

[Read the review](https://ai-agents.reviews/en-gb/reviews/ada) · [Pricing explained](https://ai-agents.reviews/en-gb/pricing/ada) · [Alternatives](https://ai-agents.reviews/en-gb/alternatives/ada)

### 3. Salesforce Agentforce — 5.9/10

_Organisations already committed to Salesforce Service Cloud_

- **Price from:** US$2 per conversation
- **Pricing model:** Mixed
- **Works on your existing helpdesk:** Requires Salesforce
- **Self-serve sign-up:** No

Agentforce is Salesforce's AI agent platform for Service Cloud. It acts directly on CRM data and offers more pricing models than any rival: per conversation, per action with Flex Credits, per user, and since July 2026 per resolution with Help Agent.

> Public prices and native CRM access for Salesforce customers.

**The catch:** The US$2 per conversation plan bills whether or not the issue is resolved, and the pricing has changed repeatedly.

[Read the review](https://ai-agents.reviews/en-gb/reviews/salesforce-agentforce) · [Pricing explained](https://ai-agents.reviews/en-gb/pricing/salesforce-agentforce)

### 4. Decagon — 5.8/10

_Large enterprises with high volume and a six-figure budget_

- **Price from:** est. US$105,000 per year
- **Pricing model:** Quote only
- **Works on your existing helpdesk:** Yes
- **Self-serve sign-up:** No

Decagon builds AI agents for chat, email and voice at large consumer, fintech and telecom brands. It publishes no prices and offers no trial. Procurement data puts the median contract at US$432,750 a year.

> Publishes its helpdesk integrations and has procurement data available.

**The catch:** No public prices, and the pricing most often observed by buyers is per conversation, so you may pay for conversations the AI does not resolve unless you negotiate otherwise.

[Read the review](https://ai-agents.reviews/en-gb/reviews/decagon) · [Pricing explained](https://ai-agents.reviews/en-gb/pricing/decagon) · [Alternatives](https://ai-agents.reviews/en-gb/alternatives/decagon)

## Comparison table

| Product | Score | Pricing model | Price from | Works on your existing helpdesk | Self-serve sign-up | EU data residency | Best for |
| --- | --- | --- | --- | --- | --- | --- | --- |
| [Sierra](https://ai-agents.reviews/en-gb/reviews/sierra) | 6.2 | Quote only | Quote only | Yes | No | Not documented | Very large consumer brands that want a managed build |
| [Intercom Fin](https://ai-agents.reviews/en-gb/reviews/intercom-fin) | 9.1 | Per resolution | US$0.99 per resolution | Yes | Yes | Yes | Teams that want a price they can calculate today |
| [Ada](https://ai-agents.reviews/en-gb/reviews/ada) | 7.4 | Quote only | est. US$36,079 per year | Yes | No | Yes | Mid-market and enterprise teams that want an agent on top of their current helpdesk |
| [Salesforce Agentforce](https://ai-agents.reviews/en-gb/reviews/salesforce-agentforce) | 5.9 | Mixed | US$2 per conversation | No | No | Yes | Organisations already committed to Salesforce Service Cloud |
| [Decagon](https://ai-agents.reviews/en-gb/reviews/decagon) | 5.8 | Quote only | est. US$105,000 per year | Yes | No | Not documented | Large enterprises with high volume and a six-figure budget |

## Frequently asked questions

### Is there a Sierra alternative with public pricing?

Among products with comparable certifications, Intercom Fin publishes US$0.99 per outcome and Salesforce Agentforce publishes US$2 per conversation.

### Which alternative is best for voice?

Decagon and Ada both document voice. Chime reports 70% resolution across chat and voice with Decagon, and Epos Now reports 40% of phone enquiries resolved with Ada.

## Related pages

- [Sierra review](https://ai-agents.reviews/en-gb/reviews/sierra)
- [Sierra pricing explained](https://ai-agents.reviews/en-gb/pricing/sierra)
- [The best AI customer service agents in 2026](https://ai-agents.reviews/en-gb/best/ai-customer-service-agents)

## Sources

- [Sierra homepage](https://sierra.ai) — Sierra · 18 September 2026
- [Sierra product](https://sierra.ai/product) — Sierra · 18 September 2026
- [Sierra Voice](https://sierra.ai/product/voice) — Sierra · 18 September 2026
- [Agent SDK](https://sierra.ai/product/agent-sdk) — Sierra · 18 September 2026
- [Trust and reliability](https://sierra.ai/product/trust-and-reliability) — Sierra · 18 September 2026
- [Outcome-based pricing for AI agents](https://sierra.ai/blog/outcome-based-pricing-for-ai-agents) — Sierra · 18 September 2026
- [Sierra customers](https://sierra.ai/uk/customers) — Sierra · 18 September 2026
- [WeightWatchers customer story](https://sierra.ai/customers/weightwatchers) — Sierra · 18 September 2026
- [Better customer experiences, built on Sierra (funding announcement)](https://sierra.ai/blog/better-customer-experiences-built-on-sierra) — Sierra · 18 September 2026
- [AI for call centers](https://sierra.ai/blog/ai-for-call-centers) — Sierra · 18 September 2026
- [Sierra achieves AIUC-1 certification](https://sierra.ai/blog/sierra-achieves-aiuc-1-certification) — Sierra · 18 September 2026
- [Sierra company profile](https://sacra.com/c/sierra/) — Sacra · 18 September 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 · 18 September 2026
- [Fin homepage](https://fin.ai/) — Fin · 18 September 2026
- [Fin pricing](https://fin.ai/pricing) — Fin · 18 September 2026
- [Intercom pricing](https://www.intercom.com/pricing) — Intercom (Fin) · 18 September 2026
- [Fin pricing: outcomes](https://fin.ai/help/en/articles/13975800-fin-pricing-outcomes) — Fin Help Center · 18 September 2026
- [Anthropic customer story](https://fin.ai/customers/anthropic) — Fin · 18 September 2026
- [Lightspeed customer story](https://fin.ai/customers/lightspeed) — Fin · 18 September 2026
- [Fin channels](https://fin.ai/channels) — Fin · 18 September 2026
- [Fin integrations](https://fin.ai/integrations) — Fin · 18 September 2026
- [Use Fin AI Agent in multiple languages](https://fin.ai/help/en/articles/10840651-use-fin-ai-agent-in-multiple-languages) — Fin Help Center · 18 September 2026
- [Regional data hosting](https://fin.ai/help/en/articles/13976037-regional-data-hosting) — Fin Help Center · 18 September 2026
- [Intercom security](https://www.intercom.com/security) — Intercom (Fin) · 18 September 2026
- [Fin AI Agent explained](https://fin.ai/help/en/articles/13975995-fin-ai-agent-explained) — Fin Help Center · 18 September 2026
- [Today, Intercom becomes Fin](https://www.intercom.com/blog/today-intercom-becomes-fin/) — Intercom (Fin) · 18 September 2026
- [Salesforce signs definitive agreement to acquire Fin](https://www.salesforce.com/news/press-releases/2026/06/15/salesforce-signs-definitive-agreement-to-acquire-fin/) — Salesforce · 18 September 2026
- [Ada homepage](https://www.ada.cx) — Ada · 18 September 2026
- [Ada platform](https://www.ada.cx/platform/) — Ada · 18 September 2026
- [Ada messaging](https://www.ada.cx/platform/messaging/) — Ada · 18 September 2026
- [Ada integrations](https://www.ada.cx/platform/integrations/) — Ada · 18 September 2026
- [Service-specific terms](https://www.ada.cx/legal/service-specific-terms/) — Ada · 18 September 2026
- [Understand and improve your AI agent's automated resolution rate](https://docs.ada.cx/docs/generative/measure-success/understand-and-improve-your-ai-agent-s-automated-resolution-rate) — Ada Docs · 18 September 2026
- [About multilingual support](https://docs.ada.cx/docs/setup/languages/about-multilingual-support) — Ada Docs · 18 September 2026
- [Ada subprocessors](https://www.ada.cx/subprocessors) — Ada · 18 September 2026
- [Ada trust](https://www.ada.cx/platform/trust/) — Ada · 18 September 2026
- [Epos Now case study](https://www.ada.cx/case-study/epos-now/) — Ada · 18 September 2026
- [Life360 case study](https://www.ada.cx/case-study/life360/) — Ada · 18 September 2026
- [Ada doubles YoY growth as demand for agentic customer service surges (3 March 2026)](https://www.ada.cx/media-center/press-release/ada-doubles-yoy-growth-as-demand-for-agentic-customer-service-surges/) — Ada · 18 September 2026
- [Ada pricing (buyer data, 114 purchases)](https://www.vendr.com/marketplace/ada) — Vendr · 18 September 2026
- [Ada company profile](https://sacra.com/c/ada/) — Sacra · 18 September 2026
- [Agentforce](https://www.salesforce.com/agentforce/) — Salesforce · 18 September 2026
- [Agentforce pricing](https://www.salesforce.com/agentforce/pricing/) — Salesforce · 18 September 2026
- [Flex Credits Rate Card (21 April 2026)](https://www.salesforce.com/en-us/wp-content/uploads/sites/4/assets/pdf/agentforce/Flex-Credits-Rate-Card-04.21.2026.pdf) — Salesforce · 18 September 2026
- [Agentforce Help Agent announcement](https://www.salesforce.com/news/stories/agentforce-help-agent-announcement/) — Salesforce · 18 September 2026
- [Salesforce unveils AI Help Agent with pay-per-resolution pricing](https://www.cio.com/article/4189183/salesforce-unveils-ai-help-agent-with-pay-per-resolution-pricing.html) — CIO.com · 18 September 2026
- [Agentforce customer success stories](https://www.salesforce.com/news/stories/agentforce-customer-success-stories/) — Salesforce · 18 September 2026
- [Complete guide to Agentforce pricing options](https://www.salesforceben.com/complete-guide-to-agentforce-pricing-options/) — Salesforce Ben · 18 September 2026
- [Agentforce product maturity questioned as KeyBanc cites weak customer traction](https://www.cio.com/article/4198127/salesforces-agentforce-product-maturity-questioned-as-keybanc-cites-weak-customer-traction.html) — CIO.com · 18 September 2026
- [Agentforce Help Agent pay-per-resolution analysis](https://salesforcedevops.net/index.php/2026/06/25/agentforce-help-agent-pay-per-resolution/) — SalesforceDevops.net · 18 September 2026
- [Hyperforce public cloud infrastructure](https://www.salesforce.com/uk/platform/public-cloud-infrastructure/) — Salesforce · 18 September 2026
- [Salesforce achieves ISO 42001 for Agentforce](https://www.salesforce.com/blog/salesforce-iso-42001-agentforce-certification/) — Salesforce · 18 September 2026
- [AI customer service agents](https://www.salesforce.com/service/ai/customer-service-agents/) — Salesforce · 18 September 2026
- [Salesforce signs definitive agreement to acquire Fin](https://www.salesforce.com/news/press-releases/2026/06/15/salesforce-signs-definitive-agreement-to-acquire-fin/) — Salesforce · 18 September 2026
- [Salesforce Q2 FY27 results](https://www.salesforce.com/news/press-releases/2026/08/26/fy27-q2-earnings/) — Salesforce · 18 September 2026
- [Decagon homepage](https://decagon.ai) — Decagon · 18 September 2026
- [Decagon integrations](https://decagon.ai/product/integrations) — Decagon · 18 September 2026
- [Decagon Voice](https://decagon.ai/product/voice) — Decagon · 18 September 2026
- [Decagon security](https://decagon.ai/security) — Decagon · 18 September 2026
- [AI customer support setup](https://decagon.ai/blog/ai-customer-support-setup) — Decagon · 18 September 2026
- [What is resolution-based pricing?](https://decagon.ai/glossary/what-is-resolution-based-pricing) — Decagon · 18 September 2026
- [Chime case study](https://decagon.ai/case-studies/chime) — Decagon · 18 September 2026
- [Rituals case study](https://decagon.ai/case-studies/rituals) — Decagon · 18 September 2026
- [Series D announcement](https://decagon.ai/blog/series-d-announcement) — Decagon · 18 September 2026
- [Introducing Duet Autopilot](https://decagon.ai/blog/autopilot) — Decagon · 18 September 2026
- [Decagon AI raises $250M at $4.5B valuation](https://siliconangle.com/2026/01/28/decagon-ai-raises-250m-4-5b-valuation-scale-ai-concierge-platform/) — SiliconANGLE · 18 September 2026
- [Decagon company profile](https://sacra.com/c/decagon/) — Sacra · 18 September 2026
- [Decagon AI pricing (buyer data)](https://www.vendr.com/marketplace/decagon-ai) — Vendr · 18 September 2026
- [Decagon (company)](https://en.wikipedia.org/wiki/Decagon_(company)) — Wikipedia · 18 September 2026

---

Canonical: https://ai-agents.reviews/en-gb/alternatives/sierra