Library / SDK
Inference & ServingFine-tuning & Training
Transformers
1Pretrained 2models 3for 4text 5and 6beyond
the six Ws · specification
W1
Who
Maintained by Hugging Face.
W2
What
A library providing thousands of pretrained models and a unified API across text, vision, and audio.
W3
Where
A Python library on CPU or GPU with PyTorch, TensorFlow, or JAX backends.
W4
When
Reach for it when you need to load, run, or fine-tune state-of-the-art models.
W5
Why
The de facto standard model library, integrated with the Hugging Face Hub.
W6
With
A deep-learning backend (PyTorch recommended) and model weights from the Hub.
W7
Watch
Built by Hugging Face; open-source (Apache-2.0); runs locally and offline once weights are downloaded.
alternatives