# Mistral launches Le Chonk AI model in public preview

> Mistral's open-weight Le Chonk (ML4) is now in preview, promising user‑controlled cyber defense.

Oossa · 2026-10-06 · https://oossa.com/en/mistral-launches-le-chonk-ai-model-in-public-preview

Mistral has opened its new Le Chonk model, officially called Mistral Large 4 (ML4), for public preview. The company says the trillion‑parameter model is built for cybersecurity, letting enterprises keep full control over the model and their data. It will release the model weights on Oct. 27, after a month of testing with developers and security teams. Mistral trained ML4 on 4,000 Nvidia Grace Blackwell GPUs over two months, a fraction of the compute used for OpenAI’s Astra model.

The lab also promises flexible deployment, including self‑hosting or API access in a European sovereign region, so data stays under EU jurisdiction. Mistral claims ML4 outperforms comparable open models from Kimi, DeepSeek and Meta in cyber capabilities.

## The facts

- Le Chonk (ML4) has a trillion parameters and is in public preview.
- Model weights will be released on Oct. 27.

## Why it matters

Enterprises can adopt a high‑capacity AI defender without depending on a closed‑source vendor that could revoke access.

## Sources & references

1. [Mistral’s new Le Chonk model brings AI cybersecurity to your business – and you control it](https://www.zdnet.com/innovation/mistral-le-chonk-ai-cybersecurity-business/) – ZDNet, 2026-10-06

Last updated: 2026-10-06