Meilleurs outils IA pour la voix et la parole (2026)

Groq Whisper — Sub-Second Speech-to-Text for Voice Agents

Whisper-large-v3 on Groq runs 166× realtime — 60-sec clip in <400ms. OpenAI-compat audio.transcriptions endpoint for voice agents.

GPT-SoVITS — Few-Shot Voice Cloning and Text-to-Speech

An open-source TTS system that can clone any voice from just one minute of audio data, combining GPT-style language modeling with VITS synthesis for natural speech generation.

CosyVoice — Multilingual Voice Generation with LLM-Based TTS

CosyVoice is an open-source text-to-speech system built on large language models by Alibaba's FunAudioLLM team. It supports 9 languages and 18+ Chinese dialects with zero-shot voice cloning, streaming synthesis, and fine-grained prosody control.

Zonos — Multilingual TTS with Voice Cloning

Zonos is an open-weight TTS model trained on 200K+ hours of speech. 7.2K+ stars. Voice cloning, 5 languages, emotion control. Apache 2.0.

Remotion AI Voiceover Skill — ElevenLabs TTS

AI skill for adding ElevenLabs text-to-speech voiceover to Remotion videos. Auto-sizes composition duration to match generated audio.

Deepgram Aura TTS — Text-to-Speech for Voice Agents

Deepgram Aura TTS produces natural English TTS with 250ms TTFA. Streaming WebSocket, 12 voices, tuned for conversational agents not narration.

Tortoise TTS — Multi-Voice Text-to-Speech Focused on Quality

A multi-voice TTS system trained with an emphasis on audio quality. Uses autoregressive and diffusion models to produce natural, expressive speech from text.

OmniVoice Studio — Open-Source Voice Cloning and TTS Desktop App

OmniVoice Studio is a self-hosted desktop application for voice cloning, text-to-speech, dubbing, and dictation. It runs entirely on your local machine, providing a privacy-first alternative to cloud-based voice synthesis services.

Piper — Fast Local Text-to-Speech Engine for 30+ Languages

Lightweight neural TTS system optimized for Raspberry Pi and edge devices with offline support and dozens of voice models.

VoxCPM — Tokenizer-Free Multilingual Text-to-Speech with Voice Cloning

Open-source TTS model by OpenBMB that generates natural multilingual speech and clones voices without traditional tokenization.

Index-TTS — Industrial-Grade Zero-Shot Text-to-Speech

An open-source controllable TTS system that clones any voice from a short audio sample, producing natural and expressive speech without fine-tuning.

Silero Models — Pre-Trained Speech AI for STT, TTS, and VAD

Silero Models is a collection of pre-trained enterprise-grade speech models for speech-to-text, text-to-speech, and voice activity detection. The models run efficiently on CPU with PyTorch, requiring no GPU for inference, and support multiple languages out of the box.

EmotiVoice — Multi-Voice Text-to-Speech with Emotion Control

An open-source TTS engine by NetEase Youdao that generates speech with fine-grained emotion control, supporting multiple voices and both Chinese and English with adjustable emotional expression.

Moshi — Real-Time AI Voice Conversation Engine

Open-source real-time voice AI by Kyutai. Full-duplex speech conversation with 200ms latency, emotion recognition, and on-device processing. Apache 2.0 licensed.

LiveKit Agents — Build Real-Time Voice AI Agents

Framework for building real-time voice AI agents. STT, LLM, TTS pipeline with sub-second latency. Supports OpenAI, Anthropic, Deepgram, ElevenLabs. 9.9K+ stars.

Remotion Rule: Voiceover

Remotion skill rule: Adding AI-generated voiceover to Remotion compositions using TTS. Part of the official Remotion Agent Skill for programmatic video in React.

Voicebox — Open-Source AI Voice Studio

An open-source AI voice studio for voice cloning, text-to-speech dictation, and audio creation running locally with GPU acceleration on macOS and Linux.

ElevenLabs Voice Design — Generate Voices from Prompts

ElevenLabs Voice Design generates new voices from text prompts. Describe age, accent, tone — get a voice you own and reuse via TTS API.

Vapi — Voice AI Agent Platform with STT, LLM & TTS

Vapi glues STT, LLM, TTS, turn-taking into one voice agent API. Build phone agents in minutes. Twilio + Deepgram + ElevenLabs + GPT-4o stack.

LiveKit Agents — Python Framework for Voice AI

LiveKit Agents is a Python framework for real-time voice AI. Pluggable STT/LLM/TTS, VAD, barge-in. Run on LiveKit Cloud or self-host.

Deepgram Voice Agent API — Unified STT+LLM+TTS

Deepgram Voice Agent API bundles STT + your LLM + Aura TTS into one WebSocket. Full-duplex voice. Turn detection and barge-in configurable.

ElevenLabs ConvAI — Full-Duplex Voice Agent Platform

ElevenLabs ConvAI bundles STT, LLM, TTS, VAD, barge-in into one managed voice agent. Define prompt, attach tools, point at Twilio number.

VibeVoice — Open-Source Frontier Voice AI by Microsoft

An open-source voice AI platform from Microsoft for speech synthesis, voice conversion, and real-time audio processing.

Cartesia Streaming WebSocket — Full-Duplex Voice Agent TTS

Cartesia's streaming WebSocket pipelines LLM text chunks in and audio out simultaneously. Required for sub-second voice agent round-trips.

Dograh — Open-Source Self-Hosted Voice AI Platform

Dograh is an open-source voice AI platform for building conversational voice agents with telephony support. It offers a self-hosted alternative to cloud voice APIs with a visual workflow builder, MCP integration, and support for speech-to-speech and LLM-based pipelines.

Vocode — Open-Source Voice AI Agent Framework

Vocode is an open-source framework for building voice-based AI agents and applications. It provides modular abstractions for speech-to-text, LLM conversation, and text-to-speech, enabling developers to create phone callers, voice assistants, and interactive voice response systems.

Higgs Audio — Text-Audio Foundation Model for Conversational Speech

A text-audio foundation model by Boson AI that generates natural conversational speech with expressive prosody and zero-shot voice cloning, designed for dialogue and interactive applications.

Moonshine — Low-Latency Speech-to-Text Engine for Real-Time Applications

An open-source speech-to-text engine optimized for low-latency transcription, designed for voice interfaces, real-time captioning, and edge deployment.

VoiceCraft — Zero-Shot Speech Editing and Text-to-Speech

A neural codec language model for zero-shot speech editing and text-to-speech that can seamlessly edit spoken audio or generate speech that matches a reference speaker with only a few seconds of audio.

Amphion — Open-Source Audio, Music, and Speech Generation Toolkit

A comprehensive research toolkit covering text-to-speech, singing voice synthesis, voice conversion, and music generation with reproducible implementations.