The answer to a question the American assistants cannot answer: where is my data, and whose law governs it. Mistral is French, its models are built and hosted in Europe, and it is the assistant that European organisations can adopt without a lengthy argument with their own legal team. It is also strikingly fast, to the point where the speed changes how you use it for short back-and-forth work.
On the hardest reasoning tasks it sits a step behind Claude and Gemini, and the surrounding product has fewer features. But for everyday writing, summarising and questions it is entirely capable, several of its models are open weight, and for anyone switching on privacy or jurisdiction grounds rather than raw quality it is the strongest pick here.