The main Sierra alternatives in 2026 are Decagon for enterprise brands that want a comparable AI concierge, Intercom Fin and Zendesk AI agents for teams already on those help desks, Salesforce Agentforce for Salesforce-centric service teams, Ada for enterprise support automation, and Kore.ai for automation that extends beyond customer service. 11x is a different category: it runs revenue conversations with prospects, not customer support, so it complements Sierra rather than replacing it.
Key takeaways
Sierra is a customer-experience platform, and its direct alternatives are customer-experience platforms too.
- Sierra advertises outcome-based pricing but publishes no rates; Decagon, Ada and Kore.ai also do not publish prices.
- Intercom Fin (from $0.99 per outcome), Zendesk (from $1.50 per extra automated resolution) and Salesforce Agentforce ($2 per conversation) publish usage pricing you can model before a sales call.
- Decagon is the closest like-for-like option: voice, chat and email agents, workflows written in natural language, and enterprise customers such as Duolingo, Notion and Chime.
- Agentforce makes the most sense when your customer records and service workflows already live in Salesforce.
- 11x is built for revenue workflows, not support ticket deflection: 11x Inbound answers inbound sales leads on voice or chat in under a minute, from $2,417 a month billed annually.
How we evaluated
We judged each platform on the job a Sierra buyer usually has: resolving customer questions and tasks across digital and voice channels with an on-brand AI agent. The criteria were channels supported, how agents are built and governed, fit with the existing help desk or CRM, compliance credentials, and whether pricing is published. Sources are each vendor's own product, pricing and trust pages; G2 pages could not be accessed during this check, so review ratings are not included. Last checked November 2026. 11x publishes this guide and makes 11x Outbound and 11x Inbound.
Sierra alternatives at a glance
The table compares Sierra and seven alternatives. "Not published" means the vendor does not list prices on its site.
| Platform | Best for | Channels | Pricing | Setup | Key limit |
|---|---|---|---|---|---|
| Sierra (baseline) | Consumer brands wanting one branded agent everywhere | Chat, SMS, WhatsApp, email, voice, ChatGPT | Not published; outcome-based | Agent Studio, with or without engineers | No list prices to compare |
| Decagon | Enterprise consumer and tech brands | Voice, chat, email | Not published | Workflows written as natural-language AOPs | No list prices to compare |
| Intercom Fin | Support teams on Intercom or another help desk | Email, live chat, phone | From $0.99 per outcome, plus seats | Inside Intercom or with your current help desk | Cost scales with resolved volume |
| Salesforce Agentforce | Service teams running on Salesforce | Customer-facing digital and voice agents | $2 per conversation, or Flex Credits | Built on Salesforce data and workflows | Depends on Salesforce data quality |
| Zendesk AI agents | Support teams on Zendesk | Messaging, email; voice with Zendesk voice | Included in Suite (from $55/agent/mo); extra resolutions $1.50 to $2.00 | Inside Zendesk | Few included resolutions per agent |
| Ada | Digital-first brands automating support | Messaging, voice, email | Not published | Enterprise sales | No list prices to compare |
| Kore.ai | Enterprises automating service, employee and process work | Voice and digital | Not published | Enterprise sales; forward deployed engineers available | Broad platform to configure and govern |
| 11x | Revenue teams answering leads and working territory | Inbound: voice, chat. Outbound: email, Social, rep dialer | From $2,417/mo (Inbound chat), billed annually | 2-week standard onboarding | Not for support ticket deflection |
Decagon: the closest like-for-like alternative
Decagon builds AI agents for customer service across voice, chat and email, with agent workflows defined in natural language through Agent Operating Procedures (AOPs). Its tooling covers simulation testing, live A/B experiments, always-on QA and voice-of-customer reporting, plus Duet, an assistant for building and improving agents, and a dedicated channel for serving customers' own personal AI agents. Customers named on its site include Duolingo, Notion, Chime, Deutsche Telekom, American Airlines and Figma, and it reports results such as 70% chat and voice resolution at Chime. Best for: large consumer and technology brands that want a Sierra-style concierge agent with natural-language control over workflows. Key limit: like Sierra, Decagon does not publish pricing, so comparing the two requires parallel sales processes on the same volumes. Pricing: not published; see decagon.ai.
Intercom Fin: outcome pricing you can calculate
Fin is Intercom's AI agent. It answers customers over email, live chat and phone, and Intercom says it works inside Intercom or with your current help desk, including Salesforce. Pricing is published: Fin costs from $0.99 per outcome, and Intercom seats are listed at $19 (Essential, new-customer price), $85 (Advanced) and $132 (Expert) per seat per month. That makes Fin one of the few options here with outcome pricing you can estimate before a sales call. Best for: support teams already on Intercom, or teams that want to model AI cost upfront. Key limit: per-outcome cost grows with resolved volume, so model it at your real volume, and teams with heavy phone traffic should test Fin's phone handling against voice-first platforms. Pricing: intercom.com/pricing.
Salesforce Agentforce: for Salesforce-centric service teams
Agentforce is Salesforce's agent platform, built on Salesforce data and workflows with its governance and security controls. Service teams can deploy customer-facing agents billed at $2 per conversation, or pay through Flex Credits at $500 per 100,000 credits, where a standard action uses 20 credits (about $0.10) and a voice action uses 30. The Agentforce add-on for Service Cloud is $125 per user per month, and Salesforce Foundations includes Agentforce Builder at no extra cost. Best for: service organizations whose cases, customer records and workflows already live in Salesforce. Key limit: results depend on how complete your Salesforce data and processes are, and cost combines several meters, so estimate with Salesforce's published examples. Pricing: salesforce.com/agentforce/pricing.
Zendesk AI agents: built into the help desk
Zendesk includes AI agents in every Suite and Support plan and bills them by automated resolution, meaning a request the agent resolves without escalating to a human. Suite Team is $55 and Suite Professional is $115 per agent per month billed annually, with 5 or 10 automated resolutions per agent per month included; extra resolutions cost $1.50 committed or $2.00 pay-as-you-go. AI agents work over messaging and email, and voice requires Zendesk voice. Best for: support teams already on Zendesk that want AI resolution without a second vendor. Key limit: the included resolutions are small, so most teams at Sierra-level volume will pay mainly per resolution, and voice needs an add-on. Pricing: zendesk.com/pricing.
Ada: enterprise support automation
Ada is an AI customer service platform for enterprises, deployed across messaging, voice and email in multiple languages. Its toolset includes Playbooks for automating complex SOPs, Ada Computer for completing customer tasks, enterprise integrations, and trust and safety controls. Ada frames the product around measuring, testing and coaching the AI agent at scale, which suits teams that want an operations layer for ongoing quality rather than a one-time bot build. Customers shown include Pinterest, monday.com, Sky, Grab and GoFundMe, across ecommerce, financial services, insurance, SaaS, travel and gaming. Best for: digital-first consumer and SaaS brands automating support across messaging and email. Key limit: pricing is not published, so cost comparison requires a sales process. Pricing: not published; request through ada.cx.
Kore.ai: beyond customer service
Kore.ai suits buyers whose scope goes beyond customer service. Its platform covers AI for service (resolving customer cases across channels, plus agent assist and quality management), AI for work (enterprise search, HR, IT and recruiting) and AI for process (multi-day, multi-system processes with a full audit trail). It runs voice and digital agents and sells to large enterprises in banking, insurance, healthcare, retail, telecom and travel, with forward deployed engineers offered as a service. Best for: enterprises that want one vendor for customer, employee and back-office automation. Key limit: the breadth means more to configure and govern than a team needs if the only goal is a customer-service agent. Pricing: not published; buyers request a demo or submit a request for proposal on kore.ai.
11x: revenue workflows, not customer service
11x is not a customer-service platform. It provides AI sales agents for inbound, outbound and expansion to enterprise and mid-market revenue teams. 11x Inbound answers every inbound lead on voice or chat in under a minute, 24/7, and qualifies on timeline, budget, stack and stakeholders before a rep takes over. 11x Outbound researches every account and contact in a territory, including closed-lost and dormant accounts, and writes each email and Social message from that research; it includes a 400M+ contact base and managed sending domains, and reps place calls from the 11x dialer. 11x Expansion runs consented calls to existing customers about upsell, cross-sell and renewal. Standard onboarding takes two weeks, with two-way Salesforce sync. Pricing, billed annually: 11x Inbound from $5,333 a month for voice (2,000 calls) or $2,417 a month for chat (3,000 chats), and 11x Outbound from $36,000 a year for up to 5 users and 2,000 new prospects a month (Inbound pricing, Outbound pricing). Key limit: it does not resolve support tickets or replace Sierra.
Where 11x fits
11x fits next to Sierra or another service platform, covering conversations with prospects rather than customers. 11x is the best fit for enterprise and mid-market revenue teams that need every inbound lead answered and every account in the territory researched, especially if they have more leads, territory or customers than their team can cover. Published customer results include canibuild, which cut speed-to-lead from 3+ hours to under 2 minutes, and Workera, with 2.4x outbound-sourced pipeline. 11x is SOC 2 Type II and CASA Tier 3 certified and aligned with GDPR and CCPA. Humans own the deal: 11x answers, qualifies and researches, and your reps run the conversations that close. Pick something else if your goal is support ticket deflection or customer-service resolution, if you need month-to-month or self-serve terms, or if your budget is under about $2,400 a month. See 11x Inbound and 11x Outbound.
How to choose
Start with where your customer data and support team already live, then compare pricing models.
- Choose Decagon if you want the closest match to Sierra's concierge model. Choose Ada if broad messaging coverage and enterprise support tooling matter more.
- Choose Intercom Fin if your support runs on Intercom or you want per-outcome pricing you can calculate upfront. Choose Zendesk AI agents if your team already works in Zendesk.
- Choose Salesforce Agentforce if your cases and customer records live in Salesforce.
- Choose Kore.ai if automation must also cover employee requests and back-office processes.
- Choose 11x if the conversations you want to automate are with prospects, not customers who need support, and run it alongside your service platform.
How does Sierra price its AI agents?
Sierra advertises outcome-based pricing, tying spend to the results the agent delivers, but it does not publish rates on its site.
What is the closest alternative to Sierra?
Decagon is the closest like-for-like option, with AI agents across voice, chat and email and workflows written in natural language. Like Sierra, it does not publish pricing.
Which Sierra alternatives publish pricing?
Intercom Fin is priced from $0.99 per outcome, Zendesk charges $1.50 to $2.00 per automated resolution beyond those included in Suite plans, and Salesforce Agentforce charges $2 per conversation or uses Flex Credits at $500 per 100,000 credits.
Is 11x an alternative to Sierra for customer support?
No. 11x provides AI sales agents for inbound, outbound and expansion to revenue teams. It answers and qualifies sales leads and researches accounts, but it is built for revenue workflows, not support ticket deflection, so it runs alongside a customer-service platform rather than replacing one.