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Artificial intelligence models: large developers.

It became law on Sep 29, 2025.

CA SB 53 · Senate Bill · 2025–2026

Stage
Became law
Started in
Senate
Sponsors
2
Latest action
Sep 29, 2025

What it does

(1) Existing law generally regulates artificial intelligence, including by requiring, on or before January 1, 2026, and before each time thereafter, that a generative artificial intelligence system or service, or a substantial modification to a generative artificial intelligence system or service, released on or after January 1, 2022, is made publicly available to Californians for use, the developer of the system or service to post on the developer's internet website documentation regarding the data used by the developer to train the generative artificial intelligence system or service, as prescribed.

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Where it stands

This bill passed and is now law.

  1. Introduced (Done)

  2. Committee (Done)

  3. Floor (Done)

  4. Law (Done)

    Sep 29, 2025

What moved

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Who is involved

Sponsors

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

In the news

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Where it goes next

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

Work with this bill

Artificial intelligence models: large developers. | 52