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SB-53 • 2026

Artificial intelligence models: large developers.

Artificial intelligence models: large developers.

Budget Labor Taxes Technology
Enacted

This bill passed the Legislature and reached final enactment based on the latest official action.

Sponsor
Wiener
Last action
2025-09-29
Official status
Chaptered by Secretary of State. Chapter 138, Statutes of 2025.
Effective date
Not listed

Plain English Breakdown

The exact penalties for noncompliance with the TFAIA and specific dates for CalCompute's implementation depend on future actions or funding decisions.

Artificial Intelligence Rules for Big Companies

This law sets rules for big companies that make advanced AI, including requiring them to share safety information and protect whistleblowers.

What This Bill Does

  • Requires large frontier developers to publish a clear plan on their website about how they keep their AI safe and ethical.
  • Makes large frontier developers report any serious risks from using their own AI systems internally to the Office of Emergency Services.
  • Creates a special group within the Government Operations Agency to develop guidelines for creating a public cloud computing system called 'CalCompute' that supports safe, ethical, and sustainable AI development.
  • Protects employees who work with advanced AI models if they report serious safety issues or violations of the new rules.

Who It Names or Affects

  • Big companies that make and use advanced AI systems in California.
  • Employees who work with these AI models and report safety issues.
  • The Office of Emergency Services which will receive reports about serious risks from using AI internally.

Terms To Know

Frontier developer
A company that makes advanced or cutting-edge artificial intelligence systems.
Foundation model
An AI system used as a base for creating other AI applications, often very large and complex.

Limits and Unknowns

  • Details on when and how the CalCompute project will start depend on future funding.
  • Local governments cannot make their own laws about how big AI companies manage risks after January 1, 2025.

Bill History

  1. 2025-09-29 California Legislative Information

    Chaptered by Secretary of State. Chapter 138, Statutes of 2025.

  2. 2025-09-29 California Legislative Information

    Approved by the Governor.

  3. 2025-09-23 California Legislative Information

    Enrolled and presented to the Governor at 2 p.m.

  4. 2025-09-13 California Legislative Information

    Assembly amendments concurred in. (Ayes 29. Noes 8. Page 3039.) Ordered to engrossing and enrolling.

  5. 2025-09-13 California Legislative Information

    In Senate. Concurrence in Assembly amendments pending.

  6. 2025-09-12 California Legislative Information

    Read third time. Passed. (Ayes 59. Noes 7. Page 3432.) Ordered to the Senate.

  7. 2025-09-12 California Legislative Information

    Assembly Rule 63 suspended.

  8. 2025-09-12 California Legislative Information

    Read second time. Ordered to third reading.

  9. 2025-09-11 California Legislative Information

    From committee: Do pass. (Ayes 12. Noes 1.) (September 11).

  10. 2025-09-09 California Legislative Information

    Joint Rule 62(a) suspended.

  11. 2025-09-08 California Legislative Information

    Re-referred to Com. on P. & C.P. pursuant to Assembly Rule 77.2.

  12. 2025-09-05 California Legislative Information

    Ordered to third reading.

  13. 2025-09-05 California Legislative Information

    Read third time and amended.

  14. 2025-09-05 California Legislative Information

    Assembly Rule 69(b)(1) suspended.

  15. 2025-09-03 California Legislative Information

    Read second time. Ordered to third reading.

  16. 2025-09-02 California Legislative Information

    Read second time and amended. Ordered to second reading.

  17. 2025-08-29 California Legislative Information

    From committee: Do pass as amended. (Ayes 11. Noes 1.) (August 29).

  18. 2025-08-20 California Legislative Information

    August 20 set for first hearing. Placed on APPR. suspense file.

  19. 2025-07-17 California Legislative Information

    Read second time and amended. Re-referred to Com. on APPR.

  20. 2025-07-16 California Legislative Information

    From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 9. Noes 0.) (July 16).

  21. 2025-07-08 California Legislative Information

    From committee with author's amendments. Read second time and amended. Re-referred to Com. on P. & C.P.

  22. 2025-07-02 California Legislative Information

    From committee: Do pass and re-refer to Com. on P. & C.P. (Ayes 12. Noes 0.) (July 1). Re-referred to Com. on P. & C.P.

  23. 2025-06-12 California Legislative Information

    Re-referred to Coms. on JUD. and P. & C.P. pursuant to Assembly Rule 96.

  24. 2025-06-05 California Legislative Information

    Referred to Coms. on P. & C.P. and JUD.

  25. 2025-05-28 California Legislative Information

    In Assembly. Read first time. Held at Desk.

  26. 2025-05-28 California Legislative Information

    Read third time. Passed. (Ayes 37. Noes 0. Page 1281.) Ordered to the Assembly.

  27. 2025-05-27 California Legislative Information

    Read second time. Ordered to third reading.

  28. 2025-05-23 California Legislative Information

    Read second time and amended. Ordered to second reading.

  29. 2025-05-23 California Legislative Information

    From committee: Do pass as amended. (Ayes 6. Noes 0. Page 1189.) (May 23).

  30. 2025-05-16 California Legislative Information

    Set for hearing May 23.

  31. 2025-04-21 California Legislative Information

    April 21 hearing: Placed on APPR. suspense file.

  32. 2025-04-10 California Legislative Information

    Set for hearing April 21.

  33. 2025-04-09 California Legislative Information

    From committee: Do pass and re-refer to Com. on APPR. with recommendation: To consent calendar. (Ayes 13. Noes 0. Page 705.) (April 8). Re-referred to Com. on APPR.

  34. 2025-04-01 California Legislative Information

    Set for hearing April 8.

  35. 2025-03-27 California Legislative Information

    Read second time and amended. Re-referred to Com. on JUD.

  36. 2025-03-26 California Legislative Information

    From committee: Do pass as amended and re-refer to Com. on JUD. (Ayes 13. Noes 0. Page 530.) (March 25).

  37. 2025-03-17 California Legislative Information

    Set for hearing March 25.

  38. 2025-03-12 California Legislative Information

    Re-referred to Coms. on G.O. and JUD.

  39. 2025-02-27 California Legislative Information

    From committee with author's amendments. Read second time and amended. Re-referred to Com. on RLS.

  40. 2025-01-29 California Legislative Information

    Referred to Com. on RLS.

  41. 2025-01-08 California Legislative Information

    From printer. May be acted upon on or after February 7.

  42. 2025-01-07 California Legislative Information

    Introduced. Read first time. To Com. on RLS. for assignment. To print.

Official Summary Text

SB 53, Wiener.
Artificial intelligence models: large developers.
(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.
This bill would enact the Transparency in Frontier Artificial Intelligence Act (TFAIA) that would, among other things related to ensuring the safety of a foundation
model, as defined, developed by a
frontier developer, require a large frontier
developer to write, implement, and clearly and conspicuously publish on its internet website a frontier AI framework that applies to the large frontier developer’s frontier models and describes how the large frontier developer approaches, among other things, incorporating national standards, international standards, and industry-consensus best practices into its frontier AI framework. The TFAIA would also require a large frontier developer to transmit to the Office of Emergency Services a summary of any assessment of catastrophic risk, as defined, resulting from internal use of its frontier models, as specified. The TFAIA would require the Office of Emergency Services to establish a mechanism to be used by a frontier developer or a member of
the public to report, as prescribed, a critical safety incident, as
defined, and would also require the Office of Emergency Services to establish a mechanism to be used by a large frontier developer to confidentially submit summaries of any assessments of the potential for catastrophic risk resulting from internal use of its frontier models, as prescribed.
The TFAIA would exempt from the California Public Records Act a report of a critical safety incident submitted to the Office of Emergency Services, a report of assessments of catastrophic risk from internet use, and a covered employee report made
pursuant to the whistleblower protections described below.
The TFAIA would impose a civil penalty for noncompliance with the TFAIA to be enforced by the Attorney General, as prescribed.
(2) Existing law establishes the Department of Technology within the Government Operations Agency. Existing law requires the department to conduct, in coordination with other interagency bodies as it deems appropriate, a comprehensive inventory of all high-risk automated decision systems that have been proposed for use, development, or procurement by, or are being used, developed, or procured by, any state agency.
This bill would establish within the Government Operations Agency a
consortium required to develop a framework for the creation of a public cloud computing cluster to be known as “CalCompute” that advances the development and deployment of artificial intelligence that is safe, ethical, equitable, and sustainable by, among other things, fostering research and innovation that benefits the public, as prescribed. The bill would require the Government Operations Agency to, on or before January 1, 2027, submit a report from the consortium to the Legislature with that framework and would dissolve the consortium upon submission of that report. The bill would make those provisions operative only upon an appropriation in a budget act, or other measure, for its purposes.
(3) Existing law prohibits employers and their agents from making, adopting, or enforcing a rule, regulation, or policy preventing an employee from disclosing information to certain entities or from providing information to, or testifying before, any
public body conducting an investigation, hearing, or inquiry if the employee has reasonable cause to believe that the information discloses a violation of a law, as specified, and prohibits retaliation against an employee for, among other things, exercising these rights.
This bill would, among other things related to protecting whistleblowers working with foundation models, prohibit a frontier developer from making, adopting, enforcing, or entering into a rule, regulation, policy, or contract that prevents a covered employee, as defined,
from disclosing, or retaliates against a covered employee for disclosing, information to the Attorney General, a federal authority, a person with authority over the covered employee, or another covered employee who has authority to investigate, discover, or correct the reported issue, if the covered employee has reasonable cause to believe that the information discloses that the
frontier developer’s activities pose a specific and substantial danger to the public health or safety resulting from a catastrophic risk or that the frontier developer has violated the TFAIA.
This bill would require a large frontier developer to provide a certain internal process through which a covered employee may anonymously
disclose information to the large frontier developer if the covered employee believes in good faith that the information indicates that the large frontier developer’s activities present a specific and substantial danger to the public health or safety resulting from a catastrophic risk or that the large
frontier
developer violated the TFAIA. The bill would specify provisions particular to the enforcement of those whistleblower protections and would authorize attorney’s fees to a plaintiff who brings a successful action for a violation.
This bill would preempt any rule, regulation, code, ordinance, or other law adopted by a city, county, city and county, municipality, or local agency on or after January 1, 2025, specifically related to the regulation of frontier developers with respect to their management of catastrophic risk.
Existing
constitutional provisions require that a statute that limits the right of access to the meetings of public bodies or the writings of public officials and agencies be adopted with findings demonstrating the interest protected by the limitation and the need for protecting that interest.
This bill would make legislative findings to that effect.

Current Bill Text

Read the full stored bill text
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