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The best Voice agents

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

12 agentsResearched & quality-gated

All Voice agents

12 agents

  • VoiceAgent

    AI voice agents that handle calls in Yoruba, Igbo, Pidgin, Hausa and Nigerian English, with mid-call code-switching. Self-serve from $12.50/month.

    Voice agentsPaid
    AutonomousClaudeEnterpriseVerified 3 days ago

  • Cartesia

    The Stanford SSM-research spinout behind Sonic (TTS) and Ink (STT) — Line, its open-source voice-agent SDK, connects to 100+ LLMs and starts at a genuine $0/month, but the agent layer itself isn't self-hostable.

    Voice agentsFreemium
    ClaudeEnterpriseFree tierVerified 4 days ago

  • Deepgram Voice Agent API

    The speech-infrastructure vendor's own voice-agent API. Managed STT, LLM and TTS over a single WebSocket, $4.50/hr flat, with 6 LLM providers and self-hosted or VPC deployment on the same product.

    Voice agentsPaid
    AutonomousClaudeEnterpriseVerified 4 days ago

  • OpenAI Realtime API

    OpenAI's own speech-to-speech model API for voice agents: WebRTC, WebSocket or native SIP telephony, billed purely on audio tokens with no platform fee.

    Voice agentsPaid
    EnterpriseGPTVerified 4 days ago

  • SkipCallsVerified

    AI phone receptionist that answers missed calls, filters spam, and books appointments for small businesses

    Voice agentsPaid
    Verified 9 days ago

  • Synthflow AI

    A no-code voice AI platform for enterprise phone agents — a visual Flow Designer and a structured Build-Evaluate-Launch-Learn deployment cycle, billed by the minute in separate components.

    Voice agentsPaid
    EnterpriseGPTMulti-agentVerified 2 days ago

  • The The Agents Index digest

    New Voice agents agents, fresh verdicts, moves in the rankings. One short email, every week.

  • PolyAI

    The pre-LLM-era enterprise voice AI incumbent ($750M-valued, 200+ enterprise customers): sales-led only again after a May 2026 self-serve tier went away.

    Voice agentsPaid
    AutonomousClaudeEnterpriseVerified 4 days ago

  • LiveKit Agents

    The Apache 2.0 voice-agent framework. 13.1k GitHub stars, self-hostable, and the only open-source pick in this category with fully published pricing.

    Voice agentsFreemium
    ClaudeEnterpriseFree tierVerified 4 days ago

  • ElevenLabs Conversational AI

    The voice-quality specialist’s own agent layer, 10,000+ voices and instant cloning, with a bring-your-own-LLM brain.

    Voice agentsFreemium
    AutonomousClaudeEnterpriseVerified 4 days ago

  • Bland AI

    Enterprise voice AI that owns its own model stack, priced all-in per minute with no model pass-throughs.

    Voice agentsPaid
    AutonomousEnterpriseNo-codeVerified today

  • Retell AI

    Build phone-call voice agents on Retell's turn-taking layer, plug in your own LLM, voice, and telephony, ship over voice, chat, or SMS.

    Voice agentsPaid
    AutonomousEnterpriseNo-codeVerified 4 days ago

  • Vapi

    The developer platform for voice AI agents, bring your own model, voice and telephony, and Vapi orchestrates the call.

    Voice agentsPaid
    AutonomousClaudeEnterpriseVerified 4 days ago

The digest

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