Best tools for building voice agents (2026)
Platforms for agents that talk: phone lines, voice assistants and real-time speech in and out. We list 90 tools for building voice agents below, each with a link-checked page, pricing as the maker states it and alternatives.
Updated
90 tools: 34 open source, 4 source-available, 16 free or freemium, 31 paid, usage-based or enterprise, 5 pricing on the maker's site.
Fish Audio
Fish Audio is a voice AI platform for text to speech, voice cloning and speech to text, with a real-time API for voice agents. Its Drama 3 and S2 models take inline emotion and delivery tags such as whispering, laughing or pauses, it can clone a voice from a few seconds of audio, and its library has more than two million community voices for narration, characters, audiobooks and support agents. The Fish Speech models behind it are published on GitHub and Hugging Face.
Added
LVLZ
LVLZ is a personal AI agent you run by messaging it like a person, on iMessage or WhatsApp, as a text, voice note or call. It runs errands on real websites in a cloud browser, such as bookings, forms and shopping, turns messages into tasks and projects, fills a CRM from your conversations, and runs routines like a morning brief or a price watch. Everything it does lands in a web workspace, its memory can be read, edited and exported, and it asks before paying, contacting someone new or deleting anything, with cards and passwords kept in an encrypted vault.
Added
CosVoice
CosVoice gives the AI assistant you already use (Grok Bot, ChatGPT, Claude, Cursor or any MCP client) a real US phone number in your area code and its own email address. It places and answers calls for you, such as booking a table or taking a contractor's quote, then sends a written summary and transcript to your inbox; connect it through its open-source (MIT) MCP server.
Added
Lody
A team workspace for running AI coding agents in parallel in isolated Git worktrees, with live diff review, GitHub integration and access from phone or desktop.
Added
Andee
Andee is an Android agent you install as one APK (Android 11+, no root) that reads the screen and taps, types and replies in any app for you, keeps private on-device notes, and uses the OpenAI-compatible model and speech provider you choose.
Added
Tel-Agent
A self-hosted AI agent that answers phone calls and handles support on WhatsApp, Telegram, web chat and email with your own models and keys.
Added
GoRaven
A self-hosted AI agent platform for teams where agents read files, run code, call APIs and work through tasks instead of just chatting.
Added
Bops
Bops, from Orgo, is a Mac app for a team of AI bots that handle business ops such as inbox triage, CRM follow-ups, invoices and reports, each with its own cloud computer, email address, phone number and shared memory.
Added
ByteFlow
ByteFlow is a no-code builder for AI agents on top of the systems a company already runs (ERP, CRM, in-house and legacy apps) through APIs or a browser agent. Agents prepare the work, such as a CRM update or ERP entry, and a person approves it with one tap. Includes voice agents in 10+ Indian languages and document extraction.
Added
Monobot.AI
Monobot.AI is a no-code platform for building voice and chat AI agents that handle customer support, bookings, reservations and routine business calls, with a workspace for managing agents and integrations with CRMs and other tools.
Added
Robylon
Robylon builds AI customer-support agents that resolve tickets across email, chat, voice and WhatsApp, connect to helpdesks like Zendesk, Freshdesk and Intercom, take actions such as refunds and order updates, and hand hard cases to a person.
Added
RoverLead
RoverLead is an AI SDR for LinkedIn. Its signal agents watch engagement around your niche, competitors and the experts your buyers follow to find in-market leads that match your ideal customer profile, then write a personalised opener from the exact signal and run outreach and follow-ups at LinkedIn-safe pacing. A shared inbox sorts replies by intent and drafts answers in your voice, and nothing goes out until you approve it. Connects to your CRM and to Claude or ChatGPT through MCP.
Added
TypeSafe Jev
Jev is TypeSafe's System One decision model, built for the small decisions inside software and agents. You send a state and typed questions (choice, score and more) and get typed answers with probabilities back instead of free-form text, so code can branch on them directly to route, classify, score or rank options. Agents can use it to settle narrow calls cheaply and save the larger LLM for open-ended work. Available through TypeSafe's API, Python and JavaScript SDKs, an agent skill, and OpenRouter.
Added
Dodaios
Open-source desktop agent OS for Windows, macOS and Linux (formerly Personal Jarvis): talk to it and it runs your coding CLIs side by side, your browser and your apps, with offline Whisper speech, a local wiki memory and support for Ollama, Claude or ChatGPT subscriptions.
Added
Treg
Single endpoint and token that lets agents call a catalog of third-party APIs for SEO, social data, enrichment, scraping and media generation, priced per call.
Added
Monid
Gateway that gives an agent one base URL and one key to call thousands of paid tools, from web scraping and enrichment to image and voice generation, billed per call.
Added
Macro
Team workspace that links email, chat, docs, tasks, calls and CRM with agents that share one team memory.
Added
Hyperbrowser
Cloud browsers and isolated sandboxes for AI agents that you start in one call and drive with Playwright, Puppeteer or any agent.
Added
Sentience
Personal AI that builds a private memory from your email, meetings, messages and screen and acts as your digital twin, drafting and answering in your voice.
Added
XiaoZhi ESP32
Open-source voice chatbot firmware for ESP32 devices that talks through LLMs like Qwen and DeepSeek and controls hardware and services via MCP.
Added
FunASR
ModelScope's speech recognition toolkit for offline, streaming and edge ASR, with VAD, punctuation, speaker diarization and OpenAI-compatible/MCP serving.
Added
Qwen Audio Agent
Real-time voice runtime from the Qwen Audio team that keeps agents talking while they think and work on tasks.
Added
ElevenLabs UI
Component library on shadcn/ui with orbs, waveforms and voice-agent components for building audio and agentic apps.
Added
ElatoAI
Realtime voice AI for ESP32 devices and toys with 100+ speech and LLM model options.
Added
Patter
Open-source SDK that gives your AI agent a phone number, handling speech, real-time voice and telephony carriers in Python or TypeScript.
Added
Bolna
Platform for building, deploying and testing voice AI agents for recruitment, sales and customer support.
Added
Bland AI
Enterprise voice AI platform for building, deploying and monitoring phone agents with self-hosted models.
Added
Cartesia Sonic
Cartesia's real-time text-to-speech API with emotion control, built for low-latency voice agents.
Added
Goodcall
AI answering service whose voice agent works as a virtual receptionist for businesses from small shops to contact centers.
Added
Hume AI
Voice AI company focused on emotionally intelligent speech, with voice-native evaluation and human judgment tooling for voice agents.
Added
Speechmatics
Speech-to-text and voice AI APIs that handle accents, multiple speakers and multilingual speech for voice agents.
Added
Synthflow
Voice AI platform for enterprise call automation that deploys low-latency phone agents for sales and support.
Added
LiteLLM
Open-source AI gateway and Python SDK that calls 100+ LLM providers in the OpenAI format, with cost tracking, guardrails, load balancing and logging.
Added
Repowise
Codebase intelligence tool that indexes code, call graph, git history and docs locally and answers questions for you and your coding agent over MCP.
Added
coucou
Mac notch and phone companion that monitors your Claude Code, Codex, Cursor and Gemini CLI sessions and lets you approve permissions on the go.
Added
ripwire
Zero-dependency CLI and MCP server that gives coding agents a ranked call graph, blast radius and tests-to-run before and after edits.
Added
Gemini MCP Tool
MCP server that lets Claude and other assistants call the Gemini CLI to analyze large files and codebases with its big context window.
Added
Jarvis
Private, local-first desktop AI assistant with voice and text chat, personal memory, dictation and MCP tools.
Added
MiniMax MCP
Official MiniMax MCP server that lets agents call MiniMax text-to-speech, voice cloning, image and video generation.
Added
OpenInference
OpenTelemetry-based instrumentation that traces LLM and agent framework calls so any observability backend can show them.
Added
joinly
Connector middleware and MCP server that lets AI agents join video calls and take part in meetings in real time.
Added
Bird MCP
Bird's MCP server for sending and receiving email, SMS, WhatsApp and voice messages from AI agents through one API.
Added
Agentman
AI agents that run healthcare practice operations across phone calls, faxes and payer portals, with staff approving final actions.
Added
Cognigy
NiCE Cognigy's enterprise customer service platform with generative and conversational AI agents across voice and chat.
Added
Coval
Testing and evaluation platform for voice agents, with simulations, production evals and human QA.
Added
Instinct
Personal assistant you text or call that works across your Gmail, calendar, documents and a cloud browser to get tasks done.
Added
Parloa
AI agent management platform for enterprise customer service to build, test and scale voice and chat agents.
Added
Phonely
AI phone agents that answer every call, book appointments and handle customer support for businesses.
Added
RocketReach MCP
RocketReach's MCP server for looking up verified work emails and phone numbers from its contact database.
Added
Voiceflow
AI agent platform for customer experience automation, for building, launching and scaling chat and voice agents.
Added
zero.xyz
Lets AI agents discover, connect to and pay per call for thousands of APIs and services without API-key setup or separate sign-ups.
Added
Higgsfield
Create images, videos and voice from prompts or references using many models, with camera-move presets and an AI agent that automates workflows.
Added
Dograh
Self-hostable voice agent platform with a visual call-flow builder, bring-your-own speech and LLM providers and MCP control, pitched as an open alternative to Vapi and Retell.
Added
Stack Overflow MCP
Official remote MCP server that lets coding agents search and pull vetted Stack Overflow questions and answers, with a free daily call allowance per user.
Added
Pipecat
Open-source framework for voice and multimodal conversational agents.
Added
TEN Framework
Open-source framework for real-time multimodal voice agents, including the TEN Agent demo.
Added
Vision Agents
Stream's open framework for building real-time voice and video agents with any model.
Added
vocode
Open-source library for building voice-based LLM agents for phone calls and apps.
Added
Vexa
Open-source meeting transcription API with bots for Meet, Teams and Zoom.
Added
VoiceMode
Adds natural voice conversations to Claude Code and other assistants.
Added
TryVoice
Hands-free voice runtime for coding agents with wake word, push-to-talk and streaming replies.
Added
Cicero
Self-hosted voice interface for coding agents (Claude Code, Codex, ACP); talk from a browser or Telegram call.
Added
ClawCall
AI that places phone calls for you, navigates menus, waits on hold and talks to the person who answers.
Added
Voiceloop
Zero-dependency JS library for an interruptible in-browser voice loop (VAD, STT, LLM, TTS).
Added
Convai
Conversational AI for virtual worlds: voice-enabled characters and agents that perceive, speak and act inside games and 3D scenes.
Added
Deepgram
Speech-to-text, text-to-speech and voice agent APIs for building real-time voice agents.
Added
Dial
Gives an AI agent a real phone number for calls, SMS, iMessage and WhatsApp through one API.
Added
ElevenLabs Agents
Voice AI platform with conversational agents and TTS.
Added
Inworld
Platform and runtime for real-time voice AI and interactive characters, including text-to-speech and agent orchestration for consumer apps.
Added
LiveKit Agents
Real-time voice and video infrastructure with an agents framework.
Added
Retell AI
Builds AI phone agents for calls and support.
Added
Simple Phones
AI phone agent that answers business calls, takes messages and books appointments.
Added
Thoughtly
AI voice agents for inbound and outbound calls for businesses.
Added
Vapi
Platform for building and deploying phone voice agents.
Added
LocalAI
Self-hosted engine with an OpenAI-compatible API for running LLM, vision, voice and image models on your own hardware, including agents.
Added
Bindu
Identity, communication and payments layer that lets AI agents talk to and pay each other.
Added
Unbrowse
Turns websites into APIs agents can call.
Added
PayPal MCP
PayPal's MCP server for invoices, orders, payments and other PayPal operations from agents.
Added
Coddo
Desktop app that puts a visual interface and voice input on top of terminal coding agents.
Added
11x
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.
Added
AI Emaily
AI-native email client whose assistant triages, drafts replies in your voice, schedules and sends.
Added
ASI:One
Agentic LLM and chat app from Fetch.ai built to reason, plan and call other agents on the ASI Alliance network.
Added
Circleback
AI meeting notes and action items that can trigger follow-up workflows and integrations automatically after each call.
Added
Clara AI SDR
Face-to-face video AI SDR that talks to website visitors, qualifies leads and books meetings.
Added
Close
CRM with a built-in AI teammate that calls leads, qualifies prospects and books meetings.
Added
Hamming AI
Testing and QA platform for voice and chat agents that generates scenarios and replays real calls.
Added
Jotform AI Agents
Build AI agents from forms and docs that answer customers via chat, voice and messaging.
Added
NanoMuse
Open-source AI agent for your phone and computer (Show HN, Oct 7).
Added
Recall.ai
API for meeting bots that join Zoom, Meet and Teams to record and transcribe.
Added
Suck Up!
Party game where you play a vampire who has to talk your way past AI-voiced residents to get invited inside.
Added
GitHub repos (46)
| Repo | GitHub stars | Licence | Last push |
|---|---|---|---|
| LiteLLM ↗ | 61,465 | MIT | 2026-10-21 |
| LocalAI ↗ | 49,586 | MIT | 2026-10-21 |
| Fish Audio ↗ | 33,333 | — | — |
| XiaoZhi ESP32 ↗ | 31,392 | MIT | 2026-10-21 |
| FunASR ↗ | 20,738 | MIT | 2026-10-21 |
| Pipecat ↗ | 16,446 | BSD 2-Clause | 2026-10-21 |
| TEN Framework ↗ | 11,172 | Apache License 2.0 with additional conditions | 2026-10-21 |
| Bindu ↗ | 10,056 | Apache-2.0 | 2026-09-06 |
| Vision Agents ↗ | 8,171 | Apache License 2.0 | 2026-09-23 |
| Repowise ↗ | 7,832 | GNU Affero General Public License v3.0 | 2026-10-21 |
| Dograh ↗ | 5,896 | BSD 2-Clause | 2026-10-20 |
| Treg ↗ | 5,806 | — | 2026-10-21 |
| coucou ↗ | 5,468 | — | 2026-10-20 |
| Monid ↗ | 5,298 | — | 2026-10-16 |
| Macro ↗ | 4,746 | — | 2026-10-21 |
Top 15 of 46 by stars. Stars and licence come from each repo, checked when the listing was last verified.
Related tasks
Popular with: Game developers · Related searches: Open-source voice AI agent frameworks · Free AI voice agents
Tools are matched to tasks by category, use cases and what each tool says it does. Missing one? Submit it free.