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Sierra alternatives
Sierra is an enterprise voice AI, with no published monthly price. These 15 vendors are in the same product group and share the most published facts with it.
Sierra does not publish a monthly price. 6 of the alternatives publish a paid monthly plan, the lowest being RingCentral RingCX at $65/month.
Price comparison
| # | Vendor | Starts at | Per-min | Included | Free trial | HIPAA | Why it's here |
|---|---|---|---|---|---|---|---|
| — | Sierra (the one you're replacing) | Quote | — | — | Not stated | Not stated | |
| 1 | Ada Voice Enterprise voice AI · site | Quote | — | — | Not stated | Claims HIPAA | |
| 2 | Capacity AI Agents Enterprise voice AI · site | Quote | — | — | Not stated | Not stated | |
| 3 | Decagon Enterprise voice AI · site | Quote | — | — | Not stated | Not stated | |
| 4 | Leaping AI Enterprise voice AI · site | Quote | — | — | Not stated | Not stated | |
| 5 | Regal Enterprise voice AI · site | Quote | — | — | Not stated | Claims HIPAA | |
| 6 | Skit.ai Enterprise voice AI · site | Quote | — | — | Not stated | BAA available | |
| 7 | Aircall AI Voice Agent Phone-system add-on · site | $100/mo | — | — | Not stated | Not stated | |
| 8 | Amazon Connect Contact-center platform (CCaaS) · site | $0.038/min | $0.038 | — | Not stated | Not stated | |
| 9 | Floatbot Voice agent platform · site | $99/mo | — | 500 min | 14-day free trial, no credit card | Claims HIPAA | |
| 10 | Genesys Cloud CX Contact-center platform (CCaaS) · site | $75/user/mo | — | — | Free trial | Not stated | |
| 11 | NiCE CXone Contact-center platform (CCaaS) · site | $110/user/mo | — | — | Not stated | Not stated | |
| 12 | RingCentral RingCX Contact-center platform (CCaaS) · site | $65/user/mo | — | — | Not stated | Not stated | |
| 13 | Talkdesk Contact-center platform (CCaaS) · site | $85/user/mo | — | — | Talkdesk Express: 25 licenses and $100 free credit for businesses under 50 employees | Not stated | |
| 14 | CloudTalk AI Voice Agents Phone-system add-on · site | Not published | — | — | 14-day trial with 50 AI Voice Agent minutes | Not stated | |
| 15 | Dialpad AI Agents Phone-system add-on · site | Not published | — | — | Not stated | Not stated |
Each alternative in one line
- Ada Voice: AI voice agents for customer service that resolve calls, place outbound calls and hand off into existing contact centers. Ada Voice alternatives
- Capacity AI Agents: AI agents for inbound and outbound call-center work that read knowledge from Salesforce, ServiceNow and SharePoint. Capacity AI Agents alternatives
- Decagon: AI concierge for customer service with a voice agent that switches languages and can place outbound calls. Decagon alternatives
- Leaping AI: Voice AI for call centers with self-improving agents and human handoff. Leaping AI alternatives
- Regal: AI voice agents for enterprise contact centers, strong on outbound sales and service with phone-number management. Regal alternatives
- Skit.ai: AI debt-collection platform with voice agents, text and email for collection teams and healthcare billing. Skit.ai alternatives
- Aircall AI Voice Agent: AI voice agents that answer and resolve calls with or without the Aircall phone system, acting in connected apps. Aircall AI Voice Agent alternatives
- Amazon Connect: AWS pay-as-you-go contact center with agentic AI self-service and a no-code flow designer. Amazon Connect alternatives
- Floatbot: No-code voicebot and chatbot builder for inbound and outbound calls, priced by voice minutes or chat sessions. Floatbot alternatives
- Genesys Cloud CX: Enterprise CCaaS with agentic AI, per-user plans from $75 and bring-your-own-carrier telephony. Genesys Cloud CX alternatives
- NiCE CXone: CCaaS suite with AI agents, routing and workforce tools, priced per agent from $110/month. NiCE CXone alternatives
- RingCentral RingCX: AI-first contact center from RingCentral with unlimited minutes, from $65 per user per month. RingCentral RingCX alternatives
- Talkdesk: Cloud contact center with CXA AI agents and Copilot, priced per user; Talkdesk Express for small teams. Talkdesk alternatives
- CloudTalk AI Voice Agents: AI voice agents that make and take calls 24/7 inside the CloudTalk phone system. CloudTalk AI Voice Agents alternatives
- Dialpad AI Agents: AI agents in the Dialpad platform, billed in AI agent credits. Dialpad AI Agents alternatives
Head-to-head comparisons
Decagon vs SierraCresta vs SierraParloa vs SierraBland AI vs SierraRetell AI vs SierraNiCE Cognigy vs SierraCresta vs DecagonDecagon vs ParloaAircall AI Voice Agent vs Dialpad AI AgentsAircall AI Voice Agent vs CloudTalk AI Voice AgentsAircall AI Voice Agent vs Ringover AI Voice AgentAircall AI Voice Agent vs RingCentral AI ReceptionistAircall AI Voice Agent vs Smith.ai AI ReceptionistAircall AI Voice Agent vs TalkdeskAircall AI Voice Agent vs JustCall AI Voice Agent
How we pick alternatives: same product group (voice platforms), at least one shared industry when Sierra names any, then ranked by shared industries, stated features and integrations. Only facts from vendor sites; unknown values are left blank. Methodology.