Agent Voice Response
Agent Voice Response: A self-hosted, composable voice AI layer for real-time telephone conversations. Ranked #13 of 22 in IVR Software by our editors (6.0/10); pricing: Free plan; best for open-source real-time voice AI.
At a glance
- Editor score6.0 / 10
- PricingFree plan
- Best forOpen-source real-time voice AI
- Free planYes
- Paid fromNone
- Speech inputYes
- Facts checked20 Sep 2026
Where it wins
- Real-time speech-to-speech with caller barge-in
- Supports cloud and local AI providers
- Webhooks and HTTP initialization support call automation
Where it doesn't
- Requires separate Asterisk infrastructure to operate
- No native call recording in AVR Core or STS connectors
- Self-hosting requires technical setup and maintenance
Our verdict on Agent Voice Response
Agent Voice Response is an open-source, self-hostable voice AI layer for Asterisk PBX systems. It connects telephone audio with configurable automatic speech recognition, language model, text-to-speech, and speech-to-speech providers. The product is aimed at developers, VoIP engineers, system integrators, contact centers, healthcare assistants, and organizations that want cloud-based or locally operated voice automation. Its focus is real-time conversation rather than a visual IVR builder, with voice activity detection, caller interruption, noise cancellation, and echo suppression included in the feature set.
Its strongest fit is an environment already built around Asterisk or a compatible platform. Asterisk AudioSocket integration, HTTP call initialization, metadata propagation, and webhook events support call monitoring and automation. The integration range also includes FreePBX, VitalPBX, Vicidial, and Elastix, while AI-provider options include OpenAI, Anthropic, Deepgram, ElevenLabs, Google, Ollama, Vosk, Kokoro, Ultravox, and OpenRouter. Composable ASR, LLM, and TTS microservices let technical teams combine cloud and local components instead of depending on one provider.
Agent Voice Response is free and open source, but self-hosting may require separate Asterisk infrastructure and third-party AI provider costs. AVR Core and STS connectors do not provide native call recording; recording is recommended at the Asterisk layer. That makes the product a strong choice for teams that want control over deployment and AI-provider selection, especially where local operation matters. It is less suitable for buyers seeking a managed IVR service, built-in recording, or a visual flow design experience.
Agent Voice Response pricing
Agent Voice Response fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Speech input | Yes |
| Visual flow builder | Not verified |
| Concurrent calls | Not verified |
| Supported languages | Not verified |
| Webhooks or API | Yes |
| Call recording | No |
| Deployment | Self-hosted |
| Support | Email, Community, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 17 integrations: Asterisk, FreePBX, VitalPBX, Vicidial, Elastix, OpenAI … |
| Pricing | Free plan |
| Website | agentvoiceresponse.com |
| Facts checked | 20 Sep 2026 |
Agent Voice Response integrations
Agent Voice Response lists 17 integrations on its own site.
- Asterisk
- FreePBX
- VitalPBX
- Vicidial
- Elastix
- OpenAI
- Anthropic
- Deepgram
- ElevenLabs
- Ollama
- Vosk
- Kokoro
- Ultravox
- OpenRouter
- CoquiTTS
- Silero
Alternatives to Agent Voice Response
- Teloz IVRA broad IVR toolkit with affordable entry pricing and strong automation coverage.10.0
- Genesys Enterprise IVREnterprise IVR with visual design, speech understanding, analytics and broad integrations.8.8
- Momo Business IVRStructured IVR with visual controls, AI destinations, and a low-cost starting tier.8.1
See all Agent Voice Response alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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