Together AI expands fine-tuning service with more models, live metrics, and finer controls
- Source
- together.ai
- Date
Together AI expanded its fine-tuning service to cover a wider set of open-weight models, including GLM-5.3, Kimi K2.7, and additional Qwen and Gemma variants, alongside live experiment tracking and dataset validation that runs before training starts rather than after a failed run. The platform also lowered prices on select models, making it cheaper to adapt an open model for a specific task. For teams fine-tuning open models in production, live metrics during a run and validation before it starts both cut the cost of a bad training job, since problems surface before compute is spent rather than after. Broader model support also means teams are less likely to need a second vendor just because their preferred base model was not covered, consolidating fine-tuning work onto fewer platforms.

Context
Together AI's update gives teams a way to inspect what a training job will actually learn from before spending compute on it. Its announcement describes previews using the chosen model's text-processing rules, showing which portions contribute to training and whether an example has been cut short. File validation also reports malformed examples before a job starts.
During training, live metrics show how a run is progressing. With a validation dataset supplied, optional early stopping can halt a run when its error measure stops improving and retain the saved model with the lowest validation loss. These controls make data preparation and checkpoint selection more inspectable; validation loss remains the stated selection criterion.
- fine-tuning — Taking a trained model and training it a bit more on your own examples so it gets better at one specific job.
- open weights — A model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.
articleTogether AI expands fine-tuning service with tool calling, reasoning, and vision supportwww.together.ai
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