Mistral AI SAS raised €3 billion ($3.49 billion) in a Series D follow-on round for the French artificial intelligence company. Samsung Electronics was disclosed as joining the round, with CEO Arthur Mensch telling Bloomberg's Tom Mackenzie the company is probably still undervalued and that macroeconomic reasons are starting to show open source models will win. The Bloomberg report disclosed no valuation, revenue, client, pipeline or employee metrics and no specific planned use of proceeds or expansion plans.