# AB 853 (California) — Section 22757.3.1 — effective January 1, 2027

For AB 853 (California), provision stating the date is Section 22757.3.1; effective date is January 1, 2027; what it applies to is large online platforms, recorded from its source on 2026-09-08.

- **Short title:** California AI Transparency Act _(verified: appears in its own passage below)_
- **Jurisdiction:** California _(our reading, not quoted from the source)_
- **Instrument:** AB 853 _(verified: appears in its own passage below)_
- **Provision stating the date:** Section 22757.3.1 _(our reading, not quoted from the source)_
- **Effective date:** January 1, 2027 _(verified: appears in the quote below)_
- **What it applies to:** large online platforms _(our reading, not quoted from the source)_

## What the source says

> (c) This section shall become operative on January 1, 2027.

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Short title

> California AI Transparency Act.

### Instrument

> AB 853, Wicks.

## Source

- https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202520260AB853

Last verified: 2026-09-08. Review by: 2026-10-23.
Part of [AI law and regulation effective dates by jurisdiction](https://referencesource.org/ai-regulation-effective-dates/).