Features, pricing, and fit
Compare LiveKit Agents and PolyAI Voice Assistants on voice capabilities, pricing, and fit.
Compare LiveKit Agents and PolyAI for AI phone agents, then match channels, workflows, and deployment models to your call flow.
Realtime agent framework and Cloud platform supporting STT-LLM-TTS pipelines, native realtime models, half-cascade paths, WebRTC, and telephony.
Engineering teams that want to choose pipeline architecture and pair agent infrastructure with their own application logic.
Explore its buying criteria: AI phone agents · Voice AI platforms.
Enterprise voice-and-chat platform with Agent Studio, a Git-oriented Python ADK, REST APIs, knowledge/flows, and analytics.
Enterprise service teams that need managed voice agents plus visual, code-first, or programmatic build surfaces.
Explore its buying criteria: AI phone agents · Contact-center AI.
Both profiles checked 2026-09-04.
Use the table below to compare each provider’s documented scope.
Before you decide
LiveKit Agents: Tiered monthly Cloud plans with included session/calling allowances and inference credits; Enterprise adds custom volume pricing. PolyAI: Not publicly documented 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 LiveKit Agents include Not publicly documented. For PolyAI, 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: LiveKit Agents: Calculator values are examples, not universal quotes. Team owns logic, data policy, reliability, and contact-center operations. PolyAI: Confirm current architecture, availability, call controls, data handling, language coverage, and complete cost in a scoped pilot.
Record your requirements and pilot results in the buyer worksheet →
Swipe or scroll the table to see every column.
| Criterion | LiveKit Agents | PolyAI Voice Assistants |
|---|---|---|
| Provider type | Realtime voice agent framework and infrastructure | Enterprise contact-center voice AI |
| Best fit | Engineering teams that want to choose pipeline architecture and pair agent infrastructure with their own application logic. | Enterprise service teams that need managed voice agents plus visual, code-first, or programmatic build surfaces. |
| Key capabilities | open-source framework; WebRTC; SIP; provider plugins; deployment tooling | realtime voice conversations; tool or workflow integration; call controls |
| Team sizes | startup; mid-market; enterprise; developer | enterprise; contact centers |
| Call surfaces | WebRTC; SIP; phone / PSTN; mobile; web | phone / PSTN; API / SDK |
| Voice stack | Configurable pipeline with native realtime model support | Cascaded ASR-LLM-TTS architecture |
| Telephony | SIP trunking; carrier integration | 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 | Tiered monthly Cloud plans with included session/calling allowances and inference credits; Enterprise adds custom volume pricing. | Not publicly documented |
| Pricing signal | Calculator examples include roughly $0.01 session, $0.01 telephony, $0.0014 LLM, $0.0058 STT, $0.03 TTS, and $0.01 observability; inputs vary. | Not publicly documented. |
| Free plan or trial | Not publicly documented | Not publicly documented |
| What stands out | LiveKit documents three pipeline modes—STT-LLM-TTS, speech-to-speech realtime, and half-cascade—alongside Cloud deployment, observability, inference credits, and telephony. | PolyAI exposes three build surfaces—Agent Studio, ADK, and APIs—over shared flows, knowledge, tools, and deployments; its voice path documents configurable ASR and TTS providers around the agent service. |
| Considerations | Calculator values are examples, not universal quotes. Team owns logic, data policy, reliability, and contact-center operations. | Confirm current architecture, availability, call controls, data handling, language coverage, and complete cost in a scoped pilot. |
Engineering teams that want to choose pipeline architecture and pair agent infrastructure with their own application logic.
LiveKit documents three pipeline modes—STT-LLM-TTS, speech-to-speech realtime, and half-cascade—alongside Cloud deployment, observability, inference credits, and telephony.
Enterprise service teams that need managed voice agents plus visual, code-first, or programmatic build surfaces.
PolyAI exposes three build surfaces—Agent Studio, ADK, and APIs—over shared flows, knowledge, tools, and deployments; its voice path documents configurable ASR and TTS providers around the agent service.
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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