Best AI Voice Agents for Vapi AI

Find and compare the best AI Voice Agents for Vapi AI in 2026

Use the comparison tool below to compare the top AI Voice Agents for Vapi AI on the market. You can filter results by user reviews, pricing, features, platform, region, support options, integrations, and more.

  • 1
    Cloudonix Reviews

    Cloudonix

    Cloudonix

    $39 per month
    Cloudonix operates as a CPaaS (Communications Platform as a Service) provider that specializes in voice and text APIs/SDKs, catering to developers, agencies, telecom companies/MSPs, and enterprises seeking programmable voice communication solutions, AI-driven voice agents, and efficient SIP trunking. Their services feature agentic voice trunking, enabling users to integrate voice-agent platforms with any phone system, whether cloud-based or on-premise, through an easy plug-in approach; they also provide highly flexible SIP trunking along with built-in SBC capabilities (including transcoding and negotiation for TLS/TCP/UDP) to facilitate the connection of any SIP carrier or PBX with ease. For developers working on voice applications, they offer a comprehensive suite of programmable voice APIs, mobile/web voice SDKs, audio streaming options, and call control functionalities such as transfers and IVR management, enhanced by a scripting language for call flow design. Additionally, Cloudonix features low-code tools within their platform, empowering non-technical users to create IVR menus, automated call flows, outbound dialing systems, and sophisticated AI-enabled voice receptionists, broadening accessibility for various stakeholders in the communications landscape. This combination of powerful tools and user-friendly interfaces makes Cloudonix a versatile choice for businesses aiming to enhance their communication capabilities.
  • 2
    Hamming Reviews
    Automated voice testing, monitoring and more. Test your AI voice agent with 1000s of simulated users within minutes. It's hard to get AI voice agents right. LLM outputs can be affected by a small change in the prompts, function calls or model providers. We are the only platform that can support you from development through to production. Hamming allows you to store, manage, update and sync your prompts with voice infra provider. This is 1000x faster than testing voice agents manually. Use our prompt playground for testing LLM outputs against a dataset of inputs. Our LLM judges quality of generated outputs. Save 80% on manual prompt engineering. Monitor your app in more than one way. We actively track, score and flag cases where you need to pay attention. Convert calls and traces to test cases, and add them to the golden dataset.
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