ONNX
Also known as: ONNX format
ONNX (Open Neural Network Exchange) is a common file format for neural networks — a way to save a model once and run it across many runtimes.
- Bridge between training and serving frameworks.
- Enables model portability.
- A target for many optimization toolkits.
Why it exists: ONNX is the "save once, run anywhere" layer — the reason a model trained in one framework can run on an entirely different one.