Mistral AI, a Paris-based startup founded in 2023, is expanding into the U.S. market. The company, led by ex-Google DeepMind and Meta AI researchers, has raised over $500 million and aims to rival OpenAI and Google. Marjorie Janiewicz, Mistral's U.S. general manager, notes growing interest in their AI models, especially from businesses seeking alternatives to big AI stacks.