Sandbox (Article 57)

Regulatory AI testing environment

Practitioner's note: This article is practice-oriented compliance documentation, not legal advice. We are a compliance specialist, not a law firm. For legally binding information please consult a licensed lawyer.

TL;DR

A regulatory sandbox under Article 57 EU AI Act is a controlled environment operated by the competent supervisory authority for the development, testing and validation of innovative AI systems.

What is a sandbox (Article 57)?

Sandbox value:

DACH sandbox status (04/2026):

Practical example

A start-up with an AI credit-scoring solution uses the BNetzA sandbox. 12 months of development with BfDI guidance. Output: completed conformity assessment plus DPIA plus reduced fine exposure on subsequent placing on the market.

Frequently asked questions

Who can participate?
Providers of all sizes. SMEs and start-ups have priority (Article 62).
Costs?
Participation is free of charge. Own development costs plus approximately 200 person-days of effort.
Protection against fines?
Reduced fines for breaches of obligations during sandbox participation (Article 57 (12)).

See also