What is inference?

Definition

AI inference occurs after a model has been trained. The deployed model receives new data, performs its learned computation and returns an output. Every generated answer, detected object or selected robot action involves inference.

Inference speed and cost shape how a model can be used. Faster inference supports responsive applications and higher request volume, while efficient hardware, model compression, caching and routing can reduce the resources required for each result.

ELI5

Inference is the moment a trained AI model uses what it learned to handle a new input. Training is like studying examples; inference is like answering a new question after the studying is finished.

For example, when a photo app labels a new picture as containing a dog, it is performing inference. The model receives the picture, runs its learned calculations, and returns a result. The speed and computing cost of that step affect how quickly and cheaply the app can respond.

How is inference different from model training?

Training adjusts model parameters from data, while inference keeps those learned parameters fixed and uses them to process new inputs.

Why is faster AI inference useful?

Lower latency improves interactive experiences, increases system throughput and can make more applications economically practical when resource use is also controlled.

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Definition card for inference: What is inference?

AI inference is the process of running a trained model on new input to produce a prediction, classification, generated response or action.