Mira Murati's AI start-up, Thinking Machines Lab, has officially launched its first product: Tinker. It is a flexible API designed to simplify the fine-tuning of large and small open-weight AI models. Product features Tinker enables advanced research and customization Tinker is designed to enable advanced research on state-of-the-art models and their customization according to specific needs. Platform potential Tinker has been tested by several research groups Tinker is a managed service that simplifies fine-tuning for both large and small open-weight AI models. Tinker has been tested by several research groups including Princeton's Goedel Team, Stanford's Rotskoff Chemistry group, Berkeley's SkyRL group, and Redwood Research.