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tinker-cookbook is a Python library by Thinking Machines Lab providing abstractions for fine-tuning LLMs through the Tinker API, which offloads distributed training to their infrastructure.
It includes recipes for SFT, RL (math, code, multi-agent), DPO/RLHF, distillation, tool use, audio, and VLM tasks, alongside 20+ marimo notebooks. The library supports their Inkling and Inkling-Small models with controllable reasoning effort and multimodal audio/image inputs, and is installable from PyPI.