Mistral's CEO, Arthur Mensch, sees DeepSeek as a win for the open-source ecosystem.Mistral is a Paris-based startup using open-source and considered Europe's answer to OpenAI.Mensch welcomes DeepSeek's new models, noting the boost for open-source and building upon each other.Mistral focuses on agentic AI with a revamped version of its Le Chat app and plans to expand globally.