Agent Voice Response vs KloudTalk

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.

KloudTalk is a cloud-hosted business phone system providing cloud PBX and communications for small, mid-sized, and large enterprises. It offers DID and toll-free numbers in more than 50 countries, an auto attendant, and advanced call routing. Teams can build multi-level IVRs that direct calls to multiple groups, with text-to-speech prompts available in 13 languages. Call handling includes transfers, voicemail, custom greetings, and routing calls to colleagues around the world. Businesses can add click-to-call buttons to a website or mobile app. Calls are supported from landlines, mobile or GSM phones, PCs or Macs, and iOS or Android apps; listed platforms also include web, macOS, and Windows. The displayed plans list integrations, and KloudCon allows conference details to be added to Google or Outlook calendars. SOLO costs $25 a month for five users, CLUB is $45 a month for 10 users, and LEAGUE is $80 a month for 20 users. Each includes one free DID number, a web dashboard, Android and iOS apps, and an IP phone. A 14-day trial is available; KloudTalk says it offers free 24x7 customer support.