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California AI Transparency Act.

It became law on Oct 13, 2025.

CA AB 853 · Assembly Bill · 2025–2026

Stage
Became law
Started in
Assembly
Sponsors
3
Latest action
Oct 13, 2025

What it does

The California AI Transparency Act requires a person that creates, codes, or otherwise produces a generative artificial intelligence system that has over 1,000,000 monthly visitors or users and is publicly accessible within the geographic boundaries of the state to make available an AI detection tool at no cost to the user that, among other things, allows a user to assess whether image, video, or audio content, or content that is a combination thereof, was created or altered by that person's generative artificial intelligence system and outputs any system provenance data that is detected in the content. Existing law makes the California AI Transparency Act operative on January 1, 2026.

Read the full text

Where it stands

This bill passed and is now law.

  1. Introduced (Done)

  2. Committee (Done)

  3. Floor (Done)

  4. Law (Done)

    Oct 13, 2025

What moved

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Who is involved

Sponsors

The lawmakers who put their names on it, lead sponsors first.

Where it goes next

Once a bill is decided, the questions are about what is done with it in California.

Work with this bill

California AI Transparency Act. | 52