# Best Voice agents — The Agents Index

> Source: https://theagentsindex.com/category/voice-agents (curated, quality-gated, re-verified)

Real-time voice agents for calls and phone workflows — self-hosted platforms, bring-your-own-model builders, voice-quality specialists, and open-source frameworks.

23 quality-gated agents in this category. Each name links to its answer-first markdown twin.

| Name | What it is | Pricing | API |
| --- | --- | --- | --- |
| [VoiceFleet](https://theagentsindex.com/voicefleet.md) | Inbound AI phone receptionist for small businesses: answers calls, captures bookings, escalates urgent callers. | paid | Yes |
| [Kalyvox](https://theagentsindex.com/kalyvox.md) | AI phone receptionist that answers inbound calls, qualifies them, transfers or books appointments. | paid | Yes |
| [VeraDial](https://theagentsindex.com/veradial.md) | AI receptionist and verified US/Canadian business line that answers calls and texts and places outbound calls. | paid | Yes |
| [TelEcho](https://theagentsindex.com/telecho.md) | Conversational AI platform for voice and messaging agents that run customer calls and update connected systems. | paid | Yes |
| [HeyRik](https://theagentsindex.com/heyrik.md) | Build, clone and deploy AI phone agents that answer inbound calls and run outbound calling campaigns. | paid | Yes |
| [Leaping AI](https://theagentsindex.com/leaping-ai.md) | Voice and SMS AI agents for call centres, with built-in telephony, CRM integrations and a no-code agent builder. | paid | Yes |
| [Telnyx Voice AI Agents](https://theagentsindex.com/telnyx-voice-ai.md) | Carrier-owned platform for phone and web voice agents, with telephony, STT, TTS, LLM and orchestration in one stack. | paid | Yes |
| [Ringly](https://theagentsindex.com/ringly.md) | AI phone agent that answers Shopify brands' inbound customer calls and escalates what it cannot resolve. | paid | No |
| [OmniDimension](https://theagentsindex.com/omnidimension.md) | No-code platform for building voice AI agents and running them on phone, web chat, WhatsApp, email and SMS. | paid | Yes |
| [AudioCodes Live Hub](https://theagentsindex.com/audiocodes-live-hub.md) | Self-service cloud platform for building voice AI agents and connecting them to real telephony channels. | paid | Yes |
| [VoiceAgents](https://theagentsindex.com/voiceagent.md) | Voice AI platform for phone agents that speak Yoruba, Igbo, Pidgin, Hausa and Nigerian English. | paid | Yes |
| [Cartesia](https://theagentsindex.com/cartesia.md) | Real-time speech models and a managed runtime for production phone and web voice agents. | freemium | Yes |
| [Deepgram Voice Agent API](https://theagentsindex.com/deepgram-voice-agent-api.md) | One WebSocket API that runs speech-to-text, LLM orchestration and text-to-speech for real-time voice agents. | paid | Yes |
| [OpenAI Realtime API](https://theagentsindex.com/openai-realtime-api.md) | OpenAI's speech-to-speech API for low-latency voice agents over WebRTC, WebSocket or SIP. | paid | Yes |
| [SkipCalls](https://theagentsindex.com/skipcalls.md) | AI receptionist that answers a small business's existing phone number 24/7. | paid | Yes |
| [Synthflow](https://theagentsindex.com/synthflow-ai.md) | Enterprise voice AI platform with in-house telephony for inbound and outbound call automation. | freemium | Yes |
| [Auto-Respond](https://theagentsindex.com/auto-respond.md) | AI answering service and voice agent that answers calls and marketplace texts, qualifies leads and books jobs. | paid | Yes |
| [PolyAI](https://theagentsindex.com/polyai.md) | Enterprise platform for building voice and chat agents that resolve customer calls, priced per minute. | paid | Yes |
| [LiveKit Agents](https://theagentsindex.com/livekit-agents.md) | Open-source Python and Node.js framework for voice AI agents, with LiveKit Cloud hosting, telephony and observability. | freemium | Yes |
| [ElevenLabs Agents](https://theagentsindex.com/elevenlabs-conversational-ai.md) | Hosted platform for building voice and chat agents, with telephony, SDKs and a choice of LLM. | freemium | Yes |
| [Bland](https://theagentsindex.com/bland-ai.md) | Enterprise voice AI platform for inbound and outbound phone agents, running on Bland's own self-hosted models. | freemium | Yes |
| [Retell AI](https://theagentsindex.com/retell-ai.md) | Pay-as-you-go platform for building, testing and running AI phone, chat and SMS agents. | paid | Yes |
| [Vapi](https://theagentsindex.com/vapi.md) | Developer platform for building, testing and deploying voice AI agents that make and receive phone calls. | paid | Yes |