Lukas Biewald is an American entrepreneur and a prominent figure in artificial intelligence. He is recognized as the CEO and co-founder of Weights & Biases, a company that builds developer tools for AI, including solutions for tracking machine learning experiments, model management, and collaborative AI and LLM app development. The platform has been adopted by organizations such as OpenAI, Salesforce, and Microsoft. In March 2025, CoreWeave acquired Weights & Biases for $1.