Building an AI agent that doesn't just confidently hallucinate but actually writes safe, reliable code is a massive challenge. It is an even bigger challenge when you want to run that agent entirely locally without sending your proprietary code to a closed-source API.
That is exactly why I built Mitii, an AI coding assistant with a unique, multi-mode architecture designed to give developers absolute control.
To see how well this architecture actually works, I recently put Mitii through a brutal manual benchmark featuring 515 distinct tasks ranging from simple bug fixes to adversarial security injections. For this gauntlet, I powered Mitii using qwen3-coder:30b running locally via Ollama.
Here is a deep dive into the architecture and the results.
The Setup: Fully Local Execution
