CA SB1000: California AI Transparency Act.

In one paragraph

California's SB 1000 amends the California AI Transparency Act, operative since August 2, 2026. Any producer of a generative AI system publicly accessible in California is now covered (no 1,000,000-user threshold). Providers must offer a free disclosure verification tool (formerly the AI detection tool) and, where technically feasible, embed latent disclosures, now including whether the system created or altered the content, in AI image, video and audio. The manifest-disclosure option is dropped. Assistive-technology systems are exempt until 2029; falsely claiming that status costs $50,000 per violation. Urgency statute signed September 30, 2026 (Chapter 861); effective immediately.

Plain-English summary, written with AI assistance. The official text controls.

What it means for business

Any provider of a GenAI system publicly accessible in California (no user threshold since September 30, 2026) must offer a free disclosure verification tool and, where technically feasible, embed latent disclosures in AI images, video and audio. $5,000 per violation, per day.

Key provisions

1. 1Covered provider: a person that creates, codes or otherwise produces a GenAI system publicly accessible within California; the former threshold of over 1,000,000 monthly visitors or users is deleted (Bus. & Prof. Code § 22757.1)
2. 2Free disclosure verification tool (renamed from AI detection tool, § 22757.2): shows whether image, video or audio content was created or altered, other than by minor modification, by the provider's system; outputs detected system provenance data but no personal information unless that person expressly consents after a specified notice; publicly accessible (reasonable limits for security, integrity or misuse); accepts uploads or URLs and supports an API; a compliant third-party tool may be used
3. 3Providers must collect user feedback on the tool, may not collect, use, retain, sell or share personal information from tool users or processed content beyond what is strictly necessary (except to contact users who opt in), and may not condition access on more personal information than strictly necessary
4. 4Latent disclosures, to the extent technically feasible, in image, video and audio content the system creates or alters: provider name, system name and version, time and date, a unique identifier, whether the system created or altered the content, and from January 1, 2029 whether it is designed primarily as assistive technology; permanent or extraordinarily difficult to remove, compatible with the tool and standards-compliant or interoperable (§ 22757.3)
5. 5Deletes the duty to offer users the option of a manifest disclosure
6. 6Licensing: providers notify licensees of their obligations; a provider that knows an identifiable licensee made the system noncompliant must within 72 hours revoke its authorization or notify it; the licensee must fix or stop using the system and report back within 96 hours, and unresolved cases go to the Attorney General
7. 7Penalties: $5,000 per violation, each day a discrete violation, in actions by the Attorney General, a city attorney or county counsel, plus attorney's fees; pending suits cannot proceed over conduct that no longer violates the chapter. GenAI systems designed primarily as assistive technology are exempt until January 1, 2029; falsely claiming that status carries $50,000 per violation per day (§ 22757.4.1, repealed January 1, 2029)
8. 8Urgency statute: signed and chaptered September 30, 2026 (Chapter 861, Statutes of 2026); effective immediately

Latest legislative action

Sep 30, 2026. Chaptered by Secretary of State. Chapter 861, Statutes of 2026.

Sponsors

Roll call votes (showing 3 of 4)

Related and companion bills

• California AB853California AI Transparency Act.
• California SB942California AI Transparency Act.