# Do trainer.save\_model saves the best model?
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**Author:**  [@Gladiator](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2FGladiator)%5C
**Post date:** [January 2, 2022, 10:00am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fdo-trainer-save-model-saves-the-best-model%2F13296%2F1 "2022-01-02T10:00:23Z")
I have set `load_best_model_at_end` to `True` for the `Trainer` class. And I want to save the best model in a specified directory. Does the method `save_model` of `Trainer` saves the best model or the last model in the specified directory?
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**Author:**  [@mihai](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fmihai)%5C
**Post date:** [January 3, 2022, 8:18am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fdo-trainer-save-model-saves-the-best-model%2F13296%2F2 "2022-01-03T08:18:13Z")
save\_model itself does what it say on the can: saves the model, good, bad, best it does not matter. It’s the rotate checkpoints method that will keep the best model from being deleted.
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**Author:**  [@sgugger](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fsgugger)%5C
**Post date:** [January 10, 2022, 3:46pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fdo-trainer-save-model-saves-the-best-model%2F13296%2F3 "2022-01-10T15:46:52Z")
As @mihai said, it saves the model currently inside the `Trainer`. If you call it after `Trainer.train()`, since `load_best_model_at_end` will have reloaded the best model, it will save the best model.
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**Author:**  [@mvumvp](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fmvumvp)%5C
**Post date:** [July 3, 2023, 11:13am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fdo-trainer-save-model-saves-the-best-model%2F13296%2F4 "2023-07-03T11:13:45Z")
what is the source code to find the best model? Is best\_model defined based on the minimum loss of a checkpoint or just the latest checkpoint?