Tools, regulation and real use cases of artificial intelligence in a lawyer's work.
Observatorio Legal's Legal Reliability Index ranks 15 legal AI assistants available in Spain. We summarise the table, how it is measured and what should be read with caution. Note: Prudencia.ai, which heads the index, shares a founder with Agente Lex.
Guide 2 of the Spanish artificial intelligence sandbox explains the Regulation through five high-risk use cases. Some, such as staff promotion or evaluating evidence in criminal investigations, bear directly on the work of employment and criminal law firms.
In July 2026 the Ministry for Digital Transformation published version 2.0 of its guide on transparency of high-risk AI systems, adapted to the Digital Omnibus. It is not binding, but it turns Article 13 of the AI Regulation into concrete measures of interest to those who advise on or procure these systems.
The data used to train a high-risk AI system determine a good part of its results. Guide 7 of the Spanish sandbox, updated in July 2026, explains Article 10 of the AI Regulation and the new Article 4a on the use of sensitive data to correct bias.
The comprehensive equal treatment law devotes its Article 23 to artificial intelligence and automated decision-making mechanisms. Its mandates are aimed mainly at public administrations, but its rules on burden of proof and redress apply to any discrimination, including that caused by an algorithm.
Before placing a high-risk AI system on the market, the provider must show that it complies with the Regulation. Guide 3 of the Spanish sandbox explains the two procedures, internal control and assessment by a notified body, and when each applies. It includes systems in the administration of justice.
