Mistral’s new Le Chonk model brings AI cybersecurity to your business
French AI lab Mistral has released 'Le Chonk' (ML4), an open-weight model designed to provide enterprises with secure, self-hosted cyber defense capabilities. The release is positioned as a sovereign alternative to proprietary models from U.S. firms like OpenAI.
Why it matters
The shift toward open-weight models for cybersecurity reflects a growing industry demand for data sovereignty and control over AI infrastructure to prevent external breaches.
Open models are vying to become the everyman defense solution for a growing swarm of agent breaches.
Read full bio October 6, 2026, 9:00 am ET
Samuel Boivin/NurPhoto via Getty Images ZDNET’s key takeaways Mistral’s open-weight ML4 model Le Chonk is in preview. ML4 was trained with fewer GPUs than OpenAI’s Astra, but competes. Open models are positioned as democratic defenders from AI attacks. French AI lab Mistral has shipped its latest model, Mistral Large 4 (ML4) — and it’s positioned as the open solution for all your defense requirements.
Also: Open weights vs. closed: An AI civil war’s afoot, and the stakes are existential
Also covering this story
6 other newsrooms covered this event. We read each version separately.
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