speech-to-speech

Open source voice AI platform. Self-hosted alternative to Vapi and Retell. On Prem, BYOK across Speech to Speech or LLM/STT/TTS, with a visual workflow builder, MCP native and telephony support.

A simple, high-quality voice conversion tool focused on ease of use and performance.

An all-in-one, pure C++ inference engine for audio models, powered by ggml. Supports TTS, STT, VAD, voice conversion, music generation, and more, with highly optimized performance. No Python dependency.

LLaMA-Omni is a low-latency and high-quality end-to-end speech interaction model built upon Llama-3.1-8B-Instruct, aiming to achieve speech capabilities at the GPT-4o level.

Realtime Voice AI with 100+ Models on Arduino ESP32 with Secure Websockets and Edge Functions for AI Companions, and Devices

AI speech toolkit for Apple Silicon — ASR, TTS, speech-to-speech, VAD, and diarization powered by MLX and CoreML

A lightning-fast, cross-platform mobile AI Assistant App built with React Native.

语音 AI 女友（Voice AI girlfriend for DeepSeek Harness）：Whisper 语音输入 + Qwen3-TTS 声音克隆 + 句子级流式朗读 + 数字人动画窗。插话/排队双模式，说话即打断。

A modular Swift SDK for audio processing with MLX on Apple Silicon

Worlds first open-source real-time end-to-end spoken dialogue model with personalized voice cloning.

High-quality and streaming Speech-to-Speech interactive agent in a single file. 只用一个文件实现的流式全双工语音交互原型智能体！

Self-hosted API-first AI call center: AI talks, code controls the call. AI agents answer every call; humans take over without dropping it. Runs on FreeSWITCH with your SIP trunk and realtime model (OpenAI, Grok, Qwen, Doubao, or any compatible gateway).

A desktop application that uses AI to translate voice between languages in real time, while preserving the speaker's tone and emotion.

✨✨Freeze-Omni: A Smart and Low Latency Speech-to-speech Dialogue Model with Frozen LLM

Low-latency local speech-to-speech voice assistant with Ming-3.0-audio-tiny on AMD and Nvidia GPUs. Easy setup on Windows and Linux

A real-time spoken dialogue system for direct speech-to-speech interaction

Your faithful, impartial partner for audio evaluation — know yourself, know your rivals. 真实评测，知己知彼。A unified benchmark framework for ASR/TTS/Audio Codec/audio LLM evaluation

Speech-to-speech AI assistant with natural conversation flow, mid-speech interruption, vision capabilities and AI-initiated follow-ups. Features low-latency audio streaming, dynamic visual feedback, and works with local LLM/TTS services via OpenAI-compatible endpoints.

AI-powered YouTube video dubbing pipeline. Automatically transcribes (Whisper), translates (Google), and generates neural dubbing (Edge-TTS) with smart audio-video synchronization and background music preservation.

This is an on-CPU real-time conversational system for two-way speech communication with AI models, utilizing a continuous streaming architecture for fluid conversations with immediate responses and natural interruption handling.