eval_results.json

{
    "epoch": 400.0,
    "eval_loss": 4.94140625,
    "eval_runtime": 3.7873,
    "eval_samples": 258,
    "eval_samples_per_second": 68.123,
    "eval_steps_per_second": 8.713,
    "perplexity": 139.96693973881514
}