Atomic Chat
Free, open-source local AI chat that runs 1,000+ models offline
Overview
Atomic Chat is a free, open-source local AI chat app for macOS that runs large language models entirely on your device — no cloud, no subscription, no rate limits. Install it like any Mac app, pick from 1,000+ models including Llama, Qwen, DeepSeek, Mistral, and Gemma browsed straight from Hugging Face, and start chatting in seconds. It supports GGUF, MLX, and ONNX formats, and a built-in TurboQuant engine delivers up to 8× faster inference and 6× less memory by compressing models to 3 bits with no accuracy loss, so you can run bigger models with longer context smoothly. Chats and Projects keep your work organized with persistent memory across sessions, and you can build and run fully local autonomous agent workflows. Everything stays on your device — 0 bytes ever leave it.
Minimum macOS: 13.0 (Ventura)
Architecture: Apple Silicon
Key Features
- Runs 1,000+ local models offline — Llama, Qwen, DeepSeek, Mistral, Gemma
- Browse and one-click download models from Hugging Face
- Supports GGUF, MLX, and ONNX formats
- Built-in TurboQuant — up to 8× faster inference and 6× less memory
- 3-bit compression with zero accuracy loss
- No cloud, no subscription, no rate limits — 100% offline
- Chats and Projects with persistent memory across sessions
- Build and run fully local autonomous agent workflows
- One-click install, ready in seconds
- Also available on Windows, Linux, iOS, and Android
