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Tinker (Thinking Machines)

Thinking Machines' fine-tuning API for open-weight models from 4B to 1T parameters: write the training loop in Python on your own machine with forward_backward, optim_step and sample, and Tinker runs it on its GPUs. LoRA only, for SFT, RL, DPO and distillation. Pay per token, from $0.396 per million training tokens, and download any saved checkpoint.

fine-tuningapiopen-models
Category
Frameworks & Dev ToolsWeb frameworks, local developer utilities and tooling around AI coding agents.
Website
thinkingmachines.aiOfficial site, opens in a new tab.
Pricing
See official siteWe only list verified pricing.

Part of the AI Agent Infrastructure collection.

On the Fine-tuning platforms list.

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