🎙️ Voice agents
Build AI agents that talk: phone agents, voice assistants and real-time speech.
How we rank: editorial order informed by public signals shown on each card (GitHub stars for open-source tools, notable adoption otherwise). Rankings are never for sale; paid placements appear only in the labeled Featured slot.
ElevenLabs Agents
Freemium · from $6/moBuild conversational voice agents with ElevenLabs voices.
Why people use it: Best-known AI voices with an agent builder, widget and phone support on top.
Vapi
Paid · from $0.05/minDeveloper platform for building voice AI agents.
Why people use it: API-first and model-agnostic: mix any STT, LLM and voice provider.
Retell AI
Paid · from $0.07/minPlatform for AI phone agents that answer and make calls.
Why people use it: Focused on phone calls: telephony, call transfer and compliance built in.
Pipecat
FreeOpen-source Python framework for real-time voice and multimodal agents.
Why people use it: Build your own voice pipeline with full control and no per-minute platform fee.
LiveKit Agents
FreeOpen-source framework for real-time voice AI agents on LiveKit.
Why people use it: Production-grade WebRTC infrastructure under your voice agent.
Voxtral
Paid · from From $0.0035/minMistral's speech-to-text and text-to-speech models plus a voice agent SDK, in 50+ languages.
Why people use it: New: one real-time pipeline for listening, reasoning, tool calling and speaking, with EU hosting or self-deployment.