---
title: "Adaptiveness"
description: "The ability of an AI system to change its behaviour while in use, through learning after deployment; optional under the EU AI Act definition."
canonical: https://aigovernanceengineer.com/glossary/adaptiveness
author: "Jorge García Aibar"
license: "CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)"
doi: https://doi.org/10.5281/zenodo.22956197
version: "0.5.0"
updated: 2026-09-24
---

# Adaptiveness

The ability of an AI system to change its behaviour while in use, through learning after deployment; optional under the EU AI Act definition [1]. For governance it is one change trigger among several: most behaviour change in practice comes from vendor updates, drift, prompt edits or corpus refreshes.

- Developed in: [ch. 11, From definition element to registry field](https://aigovernanceengineer.com/bok/ai-defined#from-definition-element-to-registry-field)
- Chapters: [ch. 11, AI Defined](https://aigovernanceengineer.com/bok/ai-defined)
- In the glossary chapter: https://aigovernanceengineer.com/bok/glossary#t-adaptiveness

## Sources

[1] Commission Guidelines on the definition of an artificial intelligence system established by Regulation (EU) 2024/1689 (C(2025) 5053 final; non-binding; seven elements of Art. 3(1), inference as the indispensable condition; exclusions). European Commission. 2025-02-06. https://digital-strategy.ec.europa.eu/en/library/commission-publishes-guidelines-ai-system-definition-facilitate-first-ai-acts-rules-application (verified: primary)