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Foundation Model

Reviewed 19 July 2026Canonical definitionPart of: AI Agent Fundamentals →

A foundation model is a large AI model trained on broad data that can be adapted to many downstream tasks through fine-tuning, prompting, or tool integration. Foundation models power most modern AI agents and their governance starts with understanding their capabilities and limitations.

§01 / QUESTIONSterm: Foundation Model
Questions

Common questions.

What is Foundation Model?

A foundation model is a large AI model trained on broad data that can be adapted to many downstream tasks through fine-tuning, prompting, or tool integration.

How does Foundation Model work?

Foundation models power most modern AI agents and their governance starts with understanding their capabilities and limitations.

Which terms are related to Foundation Model?

Closely related concepts include Large Language Model (LLM), Generative AI, Model Factsheet, Training Data Poisoning. Each is defined in the Prefactor glossary.

§02 / RELATEDnext: where this fits

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