test-time

Definition

The phase after training, when the model is actually run on an input. The compound that matters is test-time compute: spending more computation per query — longer chains of thought, multiple samples, search over candidates, a verifier pass — to buy accuracy without touching the weights. It is the counterpart to train-time scaling, and it moves cost from a one-off training bill to every request you serve.

Explainers using this term

• TTPO Explained: Training a Model Mid-Exam, With No Answer KeyTTPO: Test-Time Policy Optimization