Agent Voice Response vs CallMatrix
Agent Voice Response
agentvoiceresponse.com
CallMatrix
callmatrix.ioSide by side
| Figure | Agent Voice Response | CallMatrix |
|---|---|---|
| Price from | Free | $40.83/mo |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| API | — | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 6 |
| Spec score · IVR Software | 7.8 (#12) | 7.9 (#10) |
| Product | Agent Voice Response turns an Asterisk PBX into a real-time, interruptible voice AI agent. | CallMatrix describes itself as a call routing and monetization platform that tracks visitors, qualifies callers, runs real-time auctions, and uploads conversions to Google Ads. |
| Support | The maker points users to documentation, Discord, GitHub, and an email address for business inquiries and partnerships. | Starter includes email support with a 48-hour response, Growth includes priority email support with a 24-hour response, and Enterprise includes phone and Slack support. |
Plans
CallMatrix
- Starter$49 a month
- Growth$79 a month
- Starter Annual$490 a year
- Growth Annual$790 a year
- EnterprisePriced on request
- Enterprise AnnualPriced on request
In their own words
Agent Voice Response
Agent Voice Response is a self-hosted system that turns an Asterisk PBX into a real-time voice AI agent. Callers can interrupt while it speaks through voice-activity detection. Its composable microservices let operators swap automatic speech recognition, language-model, and text-to-speech engines. It supports Asterisk AudioSocket on Asterisk 18 and later, including named systems such as FreePBX, VitalPBX, Vicidial, Elastix, and custom dialplans. Listed integrations include OpenAI, Anthropic, Deepgram, ElevenLabs, Google, Ollama, Vosk, Kokoro, Ultravox, OpenRouter, CoquiTTS, and Silero. Noise cancellation and echo suppression are described before audio reaches the model. Local deployments can use Vosk or Silero, Ollama, and CoquiTTS or Kokoro, keeping caller audio on the network according to the maker. Docker microservices can scale horizontally behind a load balancer. AVR is free for personal and commercial use, with no license keys or per-minute charge. Setup requires Docker images, provider configuration, and an Asterisk dialplan extension.
CallMatrix
CallMatrix has no write-up on Specifiction yet; its figures are above.