This is a finetune of the base tortoise model, it was trained on 680 hours of dutch (flemish accent) speech, mostly from audiobooks. The one downside is that you can't use the zero shot capability of the model, it needs to be finetuned for a specific voice. But once you do that the results are great.
You can use it with the mrq webui, be sure to read the wiki. The model only works if you use the dutch_vl.json tokenizer.
There are multiple checkpoints, the number in the name is the number of steps the model trained on, higher is probably better. The model is stillt training so more checkpoints are coming.