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Judge Denies xAI Bid to Halt California’s AI Training-Data Disclosure Law

The ruling leaves California’s training-data disclosure mandate in effect during ongoing litigation.

Overview

  • U.S. District Judge Jesus Bernal in Los Angeles rejected xAI’s request for a preliminary injunction on March 5, finding the company had not shown a likely chance of success at this stage.
  • AB 2013 requires generative AI developers to publicly post summaries of the datasets used to train their models, and the law has been in effect since January 1, 2026.
  • xAI’s lawsuit argues the statute compels speech in violation of the First Amendment and risks exposing trade secrets about its model training.
  • At a February 26 hearing, the court pressed the state on enforcement plans, and the California Attorney General’s office has not outlined a timeline for pursuing noncompliance.
  • The decision follows a separate setback for xAI on February 25, when a federal judge dismissed its trade-secret case against OpenAI.