# Models
`sentence_transformers.models` defines different building blocks, that can be used to create SentenceTransformer networks from scratch. For more details, see [Training Overview](../training/overview.md).

## Main Classes
```eval_rst
.. autoclass:: sentence_transformers.models.Transformer
.. autoclass:: sentence_transformers.models.Pooling
.. autoclass:: sentence_transformers.models.Dense
```

## Further Classes
```eval_rst
.. autoclass:: sentence_transformers.models.Asym
.. autoclass:: sentence_transformers.models.BoW
.. autoclass:: sentence_transformers.models.CNN
.. autoclass:: sentence_transformers.models.LSTM
.. autoclass:: sentence_transformers.models.Normalize
.. autoclass:: sentence_transformers.models.WeightedLayerPooling
.. autoclass:: sentence_transformers.models.WKPooling
.. autoclass:: sentence_transformers.models.WordEmbeddings
.. autoclass:: sentence_transformers.models.WordWeights
```