Sonna Documentation

Sonna is the open-source, local-first AI voice studio — a free alternative to ElevenLabs and WisprFlow in one app. Clone voices, generate speech across 7 TTS engines, dictate into any app with a global hotkey, compose multi-voice projects, and let any MCP-aware agent speak in a voice you own. Everything runs on your hardware.

• Dictation — hold a chord anywhere on your machine, speak, release; the transcript pastes into the focused field
• Captures tab — paired audio + transcript archive, retranscribe / refine / play-as-voice
• Voice personalities — per-profile compose button + persona-rewrite toggle, powered by a local LLM
• Agents speak back — any MCP-aware agent can call Sonna to speak in one of your cloned voices
• 7 TTS engines — Qwen3-TTS, Qwen CustomVoice, LuxTTS, Chatterbox Multilingual, Chatterbox Turbo, HumeAI TADA, Kokoro
• Cloning and preset voices — zero-shot cloning or 50+ curated preset voices
• 23 languages — from English to Arabic, Japanese, Hindi, Swahili
• Post-processing effects — pitch shift, reverb, delay, chorus, compression, filters
• Expressive speech — paralinguistic tags ([laugh], [sigh]) and natural-language delivery control
• Unlimited length — auto-chunking with crossfade for long scripts
• Stories editor — multi-track timeline for conversations, podcasts, narratives
• API-first — REST + WebSocket API, MCP server for agent integrations
• Complete privacy — models, audio, transcripts, LLM output never leave your machine
• Runs everywhere — macOS (MLX/Metal), Windows (CUDA / DirectML), Linux (ROCm / CPU), Intel Arc, Docker

Download

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Get Started

• Installation — download and install Sonna
• Quick Start — get up and running in 5 minutes
• Dictation — start talking to your computer
• Voice Personalities — compose and rewrite in any profile
• API Reference — integrate voice synthesis into your apps