# AI training data

URL: https://aidataforsale.com/glossary/ai-training-data
Publisher: AI Data For Sale (Marketing Signals Ltd)
Updated: 2026-11-10

The examples a machine learning model learns from, such as text, images, audio, video, code, actions and human judgments.

Training data shapes what a model knows and how it behaves. It is used at several stages: pre-training for broad knowledge, fine-tuning for specific tasks, preference training for helpful responses and evaluation to measure ability. See [what is AI training data](https://aidataforsale.com/learn/what-is-ai-training-data).