What shipped in Mistral
2 releases, newest first.
Mistral Large 4 open weights
On October 29, 2026, Mistral released the weights of an updated Mistral Large 4, also called Le Chonk, after the earlier public preview. Mistral says further reinforcement learning improved coding and defensive cybersecurity, and that reasoning efficiency lowered inference cost. The model adds three reasoning modes: Low for simple tasks, which replaces None, Medium for everyday tasks, and High, the default, for the hardest cases. It is available in Mistral Studio, through the Mistral API, and on OpenRouter. The weights can be downloaded from Hugging Face and served with vLLM or SGLang. The Mistral Ecosystem Open-Weight license, a modified MIT license, allows use, modification, fine-tuning, and commercialization, and a business that operates a model-as-a-service offering needs a separate commercial license from Mistral. API pricing is $0.70 per million input tokens, $0.07 per million cached input tokens, and $2.10 per million output tokens. Mistral says the model scores 19.7% on Cognition's FrontierCode 2.0 and 48% on the Artificial Analysis Coding Agent Index, effectively tied with GLM-5.3 while using 47% fewer tokens per task on average. It says Terminal-Bench 4.0 rose 13 percentage points from the public preview to 41%, with 30% fewer output tokens, and that the Artificial Analysis Cyber Index score is 51%, with a 96.6% average refusal rate on the malicious cyber prompts it measures.
Source for Mistral Large 4 open weights (opens in a new tab)GLM 5.3 Flash on Mistral
On October 22, 2026, Mistral made Z.ai GLM 5.3 Flash available as zai-glm-5-3-flash. Mistral describes it as a multimodal Mixture-of-Experts model with 320B parameters and 18B active, a 1M-token context window, and a 128k-token max output, served without Mistral modifications, for developer agent workflows, visual coding, and tool use. Pricing is $0.15 per million input tokens, $0.03 per million cached input tokens, and $0.50 per million output tokens.
Source for GLM 5.3 Flash on Mistral (opens in a new tab)
Updated