Features, pricing, and fit
Compare Decagon Voice and Empathic Voice Interface on voice capabilities, pricing, and fit.
Compare Decagon Voice and Hume EVI for AI phone agents, then match channels, workflows, and deployment models to your call flow.
Voice customer-service agent with configurable voice profiles, outbound calling, human handoff summaries, guardrails, and support-stack integrations.
Support teams that need phone automation connected to CRM, helpdesk, knowledge-base, or CPaaS systems.
Explore its buying criteria: AI phone agents · Contact-center AI.
EVI is a speech-to-speech WebSocket API that streams transcripts, vocal-expression measures, assistant text, and response audio.
Developers evaluating prosody-aware spoken interactions with configurable voices and optional supplemental LLMs.
Explore its buying criteria: AI phone agents · Voice AI platforms.
Both profiles checked 2026-09-04.
Use the table below to compare each provider’s documented scope.
Before you decide
Decagon Voice: Not publicly documented Hume EVI: Monthly plans include EVI minutes; additional EVI 3 usage is billed per minute on Pro, Scale, and Business, while TTS uses separate character allowances and rates. Ask both vendors to quote the same expected workload, required channels, and implementation scope. Include required subscriptions and usage charges before comparing the total; the listed starting prices alone may cover different work.
The recorded knowledge and data sources for Decagon Voice include Not publicly documented. For Hume EVI, they include Not publicly documented. Ask each provider to demonstrate access for the exact systems you use, with permissions, freshness, and failure behavior. A source missing from this directory is not proof that a provider cannot support it.
Use the same representative calls, approved instructions, and escalation rules in both pilots. How does it handle interruption and uncertainty? Which actions can it complete, and which require approval? What context reaches a human during transfer? Record conversation quality, completed tasks, human handoffs, and total cost in the buyer worksheet. Check these specific cautions before launch: Decagon Voice: Public detail on voice stack, telephony, regions, languages, and rates is limited; validate in a scoped pilot. Hume EVI: Empathic positioning is not proof of accurate emotion inference. Test false interpretations, cultural variation, consent, sensitive uses, and escalation.
Record your requirements and pilot results in the buyer worksheet →
Swipe or scroll the table to see every column.
| Criterion | Decagon Voice | Empathic Voice Interface |
|---|---|---|
| Provider type | Enterprise customer-service agent platform | Expressive native voice model API |
| Best fit | Support teams that need phone automation connected to CRM, helpdesk, knowledge-base, or CPaaS systems. | Developers evaluating prosody-aware spoken interactions with configurable voices and optional supplemental LLMs. |
| Key capabilities | voice support; multi-channel automation; workflows; enterprise integrations; analytics | prosody-aware interaction; expressive output; realtime sessions; tools |
| Team sizes | mid-market; enterprise | startup; mid-market; enterprise; developer |
| Call surfaces | voice; chat; email | WebSocket; web; mobile; telephony integrations |
| Voice stack | Not publicly documented | Native speech-to-speech with prosody-sensitive processing |
| Telephony | Not publicly documented | Not publicly documented |
| Call controls | Not publicly documented | Not publicly documented |
| Languages | Not publicly documented | Not publicly documented |
| Integrations | Not publicly documented | Not publicly documented |
| Knowledge and data | Not publicly documented | Not publicly documented |
| Pricing model | Not publicly documented | Monthly plans include EVI minutes; additional EVI 3 usage is billed per minute on Pro, Scale, and Business, while TTS uses separate character allowances and rates. |
| Pricing signal | Not publicly documented. | EVI 3: Pro $70/month with 1,200 minutes and $0.06/min additional; Scale $200 with 5,000 and $0.05; Business $500 with 12,500 and $0.04. |
| Free plan or trial | Not publicly documented | Free plan includes 5 EVI minutes; confirm the selected EVI version and current terms. |
| What stands out | Decagon combines voice turn-taking and profile controls with concise human handoff summaries, MCP/API connectivity, and cross-channel CRM/helpdesk/knowledge sync. | EVI’s structured WebSocket messages expose both transcript and vocal-expression measures alongside generated text/audio; EVI versions differ in language coverage and supplemental-LLM requirements. |
| Considerations | Public detail on voice stack, telephony, regions, languages, and rates is limited; validate in a scoped pilot. | Empathic positioning is not proof of accurate emotion inference. Test false interpretations, cultural variation, consent, sensitive uses, and escalation. |
Support teams that need phone automation connected to CRM, helpdesk, knowledge-base, or CPaaS systems.
Decagon combines voice turn-taking and profile controls with concise human handoff summaries, MCP/API connectivity, and cross-channel CRM/helpdesk/knowledge sync.
Developers evaluating prosody-aware spoken interactions with configurable voices and optional supplemental LLMs.
EVI’s structured WebSocket messages expose both transcript and vocal-expression measures alongside generated text/audio; EVI versions differ in language coverage and supplemental-LLM requirements.
Verify current pricing, limits, security, and required integrations directly with each provider before purchasing.
Test recognition, speech quality, interruptions, language switching, tool use, and human transfer with your own calls in the required language. Availability can vary by model, plan, and phone route.
DocsBot documents multilingual voice workflows and Japanese support. Verify the exact voice, phone path, and transfer behavior in your pilot. Review DocsBot language information ↗
Other providers’ language claims reflect cited vendor material; confirm Japanese and other required languages directly with each provider.
Listing does not imply endorsement or a performance guarantee. This directory is published by DocsBot. Editorial policy
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