Explore the evolution of LLM fine-tuning through this 18-minute keynote presentation from Ray Summit 2025, where Devendra Chaplot from Thinking Machines provides an in-depth examination of Tinkr, an innovative system transforming AI and machine learning development. Discover the complete development journey of Tinkr, from its foundational concept and core design principles to the sophisticated technical architecture that enables scalability, efficiency, and developer accessibility. Learn about the platform's essential capabilities through real-world applications and live demonstrations that illustrate how Tinkr accelerates the building, experimentation, and deployment of AI systems for development teams across various industries.