Fastino Verified Customer Reviews (2026)

Tinker is a groundbreaking training API designed specifically for researchers and developers, granting them extensive control over model fine-tuning while alleviating the intricacies associated with infrastructure management. It provides fundamental building blocks that enable users to construct custom training loops, implement various supervision methods, and develop reinforcement learning workflows. At present, Tinker supports LoRA fine-tuning on open-weight models from the LLama and Qwen families, catering to a spectrum of model sizes that range from compact versions to large mixture-of-experts setups. Users have the flexibility to craft Python scripts for data handling, loss function management, and algorithmic execution, while Tinker efficiently manages scheduling, resource allocation, distributed training, and failure recovery independently. The platform empowers users to download model weights at different checkpoints, freeing them from the responsibility of overseeing the computational environment. Offered as a managed service, Tinker runs training jobs on Thinking Machines’ proprietary GPU infrastructure, relieving users of the burdens associated with cluster orchestration and allowing them to concentrate on refining and enhancing their models. This harmonious combination of features positions Tinker as an indispensable resource for propelling advancements in machine learning research and development, ultimately fostering greater innovation within the field.