A complete RVC training run normally produces a model-weight file and a retrieval index. They serve different purposes, which is why NiceVois validates and offers them separately as well as together in one ZIP.
The .pth file
The .pth contains the trained model weights used for RVC inference. It is the primary voice-model file and is the artifact commonly placed in an RVC weights or model folder.
The .index file
The .index is a feature-retrieval index built from the prepared voice data. Compatible RVC interfaces can use it during conversion to retrieve speaker-specific features from the training dataset. You do not need one of those interfaces to hear the model work: the RVC voice converter on NiceVois takes the .pth and .index you just downloaded and converts a vocal with them in the browser.
The complete ZIP package
The ZIP keeps the matching .pth and .index together under the model name you selected. It is the safest download when you want to archive, transfer, or import the complete model later.
| Download | Contains | Choose it when |
|---|---|---|
| .pth | Trained RVC model weights | Your setup asks specifically for the model file. |
| .index | Retrieval feature index | You already have the matching .pth or need to replace only the index. |
| Complete ZIP | Matching .pth and .index | You want the portable package with nothing missing. |
| Checkpoint .pth | Validated early model weights | You need a usable interim model while final training continues. |
Best default: download the complete ZIP for storage, then use the individual .pth and .index buttons when a particular RVC interface asks for them separately.
Keep matching files together
An index belongs to the training dataset and model run that created it. Keep the matching files together and preserve their names when moving them between systems.
Train from your audio and download the individual files or the complete ZIP.
Create an RVC .pth from audioConvert a vocal or a whole song with them and hear the voice work. Every conversion returns the normal RVC result and a Clean Consonants version.
Convert with your .pth and .index