souce has this title now :

Mistral CEO confirms ‘leak’ of new open source AI model nearing GPT-4 performance

2 excerpts :

Mistral co-founder and CEO Arthur Mensch took to X to clarify: “An over-enthusiastic employee of one of our early access customers leaked a quantised (and watermarked) version of an old model we trained and distributed quite openly…
To quickly start working with a few selected customers, we retrained this model from Llama 2 the minute we got access to our entire cluster — the pretraining finished on the day of Mistral 7B release. We’ve made good progress since — stay tuned!“

Quantization in ML ((machine learning)) refers to a technique used to make it possible to run certain AI models on less powerful computers and chips by replacing specific long numeric sequences in a model’s architecture with shorter ones.