Best AI agents for building voice agents (2026)

P

Pipecat

voiceOpen source

Open-source framework for voice and multimodal conversational agents.

T

TEN Framework

voiceOpen source

Open-source framework for real-time multimodal voice agents, including the TEN Agent demo.

V

Vision Agents

voiceOpen source

Stream's open framework for building real-time voice and video agents with any model.

V

vocode

voiceOpen source + cloud

Open-source library for building voice-based LLM agents for phone calls and apps.

V

Vexa

voiceOpen source + cloud

Open-source meeting transcription API with bots for Meet, Teams and Zoom.

V

VoiceMode

voiceOpen source

Adds natural voice conversations to Claude Code and other assistants.

T

TryVoice

voiceOpen source

Hands-free voice runtime for coding agents with wake word, push-to-talk and streaming replies.

C

Cicero

voiceOpen source

Self-hosted voice interface for coding agents (Claude Code, Codex, ACP); talk from a browser or Telegram call.

V

Voiceloop

voiceOpen source

Zero-dependency JS library for an interruptible in-browser voice loop (VAD, STT, LLM, TTS).

C

ClawCall

voiceUsage-based

AI that places phone calls for you, navigates menus, waits on hold and talks to the person who answers.

C

Convai

voiceFreemium

Conversational AI for virtual worlds: voice-enabled characters and agents that perceive, speak and act inside games and 3D scenes.

D

Deepgram

voiceUsage-based

Speech-to-text, text-to-speech and voice agent APIs for building real-time voice agents.

D

Dial

voiceUsage-based

Gives an AI agent a real phone number for calls, SMS, iMessage and WhatsApp through one API.

E

ElevenLabs Agents

voiceFreemium

Voice AI platform with conversational agents and TTS.

I

Inworld

voiceUsage-based

Platform and runtime for real-time voice AI and interactive characters, including text-to-speech and agent orchestration for consumer apps.

L

LiveKit Agents

voiceOpen source + cloud

Real-time voice and video infrastructure with an agents framework.

R

Retell AI

voiceUsage-based

Builds AI phone agents for calls and support.

S

Simple Phones

voicePaid

AI phone agent that answers business calls, takes messages and books appointments.

T

Thoughtly

voicePaid

AI voice agents for inbound and outbound calls for businesses.

V

Vapi

voiceUsage-based

Platform for building and deploying phone voice agents.

L

Langflow

no-code buildersOpen source + cloud

Visual drag-and-drop builder for AI agents and workflows that you can run locally, deploy as an API or expose as an MCP server.

L

LocalAI

MCP & infraOpen source

Self-hosted engine with an OpenAI-compatible API for running LLM, vision, voice and image models on your own hardware, including agents.

Q

QwenPaw

personal agentsOpen source

Personal AI assistant you can install locally or in the cloud, connected to multiple chat channels.

S

Screenpipe

personal agentsOpen source + cloud

Records your screen and audio locally so AI agents can search and act on your computer history.

E

Eigent

personal agentsOpen source

Open-source cowork desktop app that runs multi-agent workflows locally.

B

BrowserOS

browser/computer useOpen source

Open-source agentic browser that runs AI agents locally.

B

Bindu

MCP & infraOpen source

Identity, communication and payments layer that lets AI agents talk to and pay each other.

O

Oh My OpenCode Slim

codingOpen source

Lean multi-agent suite for OpenCode that mixes models and delegates tasks automatically.

A

ACI.dev

MCP & infraOpen source + cloud

Open-source tool-calling platform connecting hundreds of tools to agents.

T

TanStack AI

frameworksOpen source

Type-safe, provider-agnostic TypeScript SDK for chat, tool calling and agents.

U

Unbrowse

browser/computer useOpen source

Turns websites into APIs agents can call.

P

PayPal MCP

MCP & infraOpen source

PayPal's MCP server for invoices, orders, payments and other PayPal operations from agents.

1

11x

business agentsEnterprise

Digital AI workers for go-to-market teams, including an SDR agent that researches prospects and runs outbound and a phone agent that handles calls.

A

AI Emaily

personal agentsFreemium

AI-native email client whose assistant triages, drafts replies in your voice, schedules and sends.

A

ASI:One

modelsFreemium

Agentic LLM and chat app from Fetch.ai built to reason, plan and call other agents on the ASI Alliance network.

C

Circleback

productivityPaid

AI meeting notes and action items that can trigger follow-up workflows and integrations automatically after each call.

C

Clara AI SDR

business agentsPaid

Face-to-face video AI SDR that talks to website visitors, qualifies leads and books meetings.

C

Close

business agentsPaid

CRM with a built-in AI teammate that calls leads, qualifies prospects and books meetings.

C

Coddo

codingFreemium

Desktop app that puts a visual interface and voice input on top of terminal coding agents.

H

Hamming AI

evals & observabilityPaid

Testing and QA platform for voice and chat agents that generates scenarios and replays real calls.

J

Jotform AI Agents

no-code buildersFreemium

Build AI agents from forms and docs that answer customers via chat, voice and messaging.

N

NanoMuse

personal agentsOpen source

Open-source AI agent for your phone and computer (Show HN, Oct 7).

P

Proof x401

cryptoUsage-based

Open HTTP protocol and MCP server that let a website ask an AI agent to prove who it is acting for and have the person cryptographically sign the exact transaction terms, using Proof's agent identity wallet.

R

Recall.ai

MCP & infraUsage-based

API for meeting bots that join Zoom, Meet and Teams to record and transcribe.

S

Suck Up!

gamesPaid

Party game where you play a vampire who has to talk your way past AI-voiced residents to get invited inside.