Hi HN, I’ve been building 120 AI Chat, a native cross platform app (macOS - ready, Windows and Linux - coming soon) designed for working with multiple AI models in a fast and clean interface.

The latest release (0.3.0) includes:

- Anthropic and Open AI support via your own API key

- Local models via Ollama: Llama 3.2, Mistral, Deepseek R1, and Gemma 3

- Multi-threaded chat: branch off conversations without losing context

- Chat settings: context limit, temperature, penalties, top-p, output tokens

- Message tools: edit, delete, copy

You can try it out for free (no license required). A $39 license unlocks all features for those who want to support early development.

120 AI Chat is part of a broader suite of native tools I'm building, including:

- [120 Email](https://120.dev/120-email): AI-assisted native email client

- [120 Table](https://120.dev/120-table): Table UI with built-in charting

- [120 HN](https://120.dev/120-hn): A free native Hacker News reader

Thanks for checking out and I would love to hear your feedback.