Mistral releases open weights for Mistral Large 4 (Le Chonk)
Mistral released open weights for an improved Mistral Large 4 (Le Chonk), its 1-trillion-parameter natively multimodal model focused on agentic coding and cyber defense.
Mistral released the open weights of an improved Mistral Large 4 (Le Chonk), its flagship 1-trillion-parameter, natively multimodal model first released in public preview earlier this month.
Official highlights:
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Coding: leads Cognition's FrontierCode 2.0 at 19.7%; 48% on the Artificial Analysis Coding Agent Index, effectively tied with GLM-5.3 while using 47% fewer tokens per task; 41% on Terminal-Bench 4.0.
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Cybersecurity: 51% on the Artificial Analysis Cyber Index; 96.6% average refusal rate on malicious cyber requests.
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Three reasoning modes: Low, Medium, High (default).
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License: Mistral Ecosystem Open-Weight license (modified MIT); businesses offering Model-as-a-Service need a separate commercial license.
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API pricing: $0.70 input / $0.07 cached input / $2.10 output per M tokens.
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Available via Mistral Studio, the Mistral API, OpenRouter, Hugging Face weights, Microsoft Foundry and NVIDIA-hosted endpoints.