AI Developer News: Mistral Large 4, Copilot Projects and a New AI Training Signal
Checked November 1, 2026. If you build AI tools or publish technical content, three late-October developments are worth understanding. Mistral released the weights of its Large 4 model; GitHub put Copilot Projects in public preview; and a new Internet-Draft proposed a way to express AI-training preferences in robots.txt. [1] [3] [6] Here is what each announcement says—and what it does not prove. 1. Mistral releases the weights of Large 4 (“Le Chonk”) On October 29, Mistral announced the release of weights for an improved Mistral Large 4, also called Le Chonk. [1] Hugging Face independently published a technical walkthrough on the same date and describes the model as multimodal and multilingual, taking text and images as inputs and generating text. [2] Why developers might care: Mistral says the weights can be downloaded fr...