Mistral releases public preview of Mistral Large 4
What happened
On 6 October 2026, Mistral AI released a public preview of Mistral Large 4. According to the company, the model is a native multimodal model with 1 trillion parameters and 49B active parameters; users can try the preview API in Mistral Studio, and the model weights will be released at the end of this month. The same day, The Decoder reported that the model is Mistral's largest to date, with 1 trillion parameters and 49 billion active parameters, has opened an API preview in Mistral Studio, with weights expected at the end of October, and focuses on safety tasks. TechCrunch then reported that the model is nicknamed Le Chonk, is currently accessible only through a public guardrail endpoint, and that weights are planned to be opened three weeks later after safety testing is completed. On 7 October, Simon Willison reported that the preview is codenamed Le chonk, has 1 trillion parameters and 49 billion active parameters, was trained on its own cluster of 3,800 NVIDIA Grace Blackwell GPUs, and is currently offered through its API. The event remains at the public preview stage.
Written by AI from the reports · updated 9 d ago
Timeline
Follow the reports to see the event from each side.
- Simon WillisonIntroducing Mistral Large 4: Le chonk
Introducing Mistral Large 4: Le chonk Mistral are back in the game. Today they're releasing a preview of Mistral Large 4, a 1 trillion parameter, 49 billion active parameter model trained on their own cluster of 3,800 NVIDIA Grace Blackwell GPUs. The preview is available via their API.
- TechCrunch · AIMistral’s new 1T model aims to leapfrog closed and open rivals
French AI lab Mistral AI has released Mistral Large 4, a new large multimodal model aiming to leapfrog both American and Chinese rivals.
- The DecoderMistral Large 4 is Europe's trillion-parameter answer to US models that refuse security work
Mistral's Large 4 is the company's biggest model yet, with one trillion parameters trained on its own European infrastructure. In the independent Intelligence Index, the model makes a big leap forward but still falls well short of Claude, GPT-6, and Chinese competitors. Mistral's main pitch is cybersecurity work that closed US models refuse to do.
- Mistral AISelectedIntroducing Mistral Large 4
Today, we're launching a public preview of Mistral Large 4. Unofficially ML4, very officially: le Chonk. ML4 pushes the frontier of open-weight performance. You can try the preview API today on Mistral Studio. Weights drop end of this month.