SB53California2025 sessionPassed / Enacted
Artificial intelligence models: large developers.
Plain-language summary
Imposes requirements on large developers of artificial intelligence models, covering Business and Professions Code, Government Code, and Labor Code. Addresses safety, transparency, and accountability obligations for companies that develop large-scale AI systems. Primarily targets large private-sector AI developers with potential government oversight mechanisms.
Summary generated by AI from the official bill text — may contain errors.
History
Jan 7, 2025
SIntroduced. Read first time. To Com. on RLS. for assignment. To print.
Jan 8, 2025
SFrom printer. May be acted upon on or after February 7.
Jan 29, 2025
SReferred to Com. on RLS.
Feb 27, 2025
SFrom committee with author's amendments. Read second time and amended. Re-referred to Com. on RLS.
Mar 12, 2025
SRe-referred to Coms. on G.O. and JUD.
Mar 17, 2025
SSet for hearing March 25.
Mar 26, 2025
SFrom committee: Do pass as amended and re-refer to Com. on JUD. (Ayes 13. Noes 0. Page 530.) (March 25).
Mar 27, 2025
SRead second time and amended. Re-referred to Com. on JUD.
Apr 1, 2025
SSet for hearing April 8.
Apr 9, 2025
SFrom 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.
Apr 10, 2025
SSet for hearing April 21.
Apr 21, 2025
SApril 21 hearing: Placed on APPR. suspense file.
May 16, 2025
SSet for hearing May 23.
May 23, 2025
SFrom committee: Do pass as amended. (Ayes 6. Noes 0. Page 1189.) (May 23).
May 23, 2025
SRead second time and amended. Ordered to second reading.
May 27, 2025
SRead second time. Ordered to third reading.
May 28, 2025
SRead third time. Passed. (Ayes 37. Noes 0. Page 1281.) Ordered to the Assembly.
May 28, 2025
AIn Assembly. Read first time. Held at Desk.
Jun 5, 2025
AReferred to Coms. on P. & C.P. and JUD.
Jun 12, 2025
ARe-referred to Coms. on JUD. and P. & C.P. pursuant to Assembly Rule 96.
Jul 2, 2025
AFrom 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.
Jul 8, 2025
AFrom committee with author's amendments. Read second time and amended. Re-referred to Com. on P. & C.P.
Jul 16, 2025
AFrom committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 9. Noes 0.) (July 16).
Jul 17, 2025
ARead second time and amended. Re-referred to Com. on APPR.
Aug 20, 2025
AAugust 20 set for first hearing. Placed on APPR. suspense file.
Aug 29, 2025
AFrom committee: Do pass as amended. (Ayes 11. Noes 1.) (August 29).
Sep 2, 2025
ARead second time and amended. Ordered to second reading.
Sep 3, 2025
ARead second time. Ordered to third reading.
Sep 5, 2025
AAssembly Rule 69(b)(1) suspended.
Sep 5, 2025
ARead third time and amended.
Sep 5, 2025
AOrdered to third reading.
Sep 8, 2025
ARe-referred to Com. on P. & C.P. pursuant to Assembly Rule 77.2.
Sep 9, 2025
AJoint Rule 62(a) suspended.
Sep 11, 2025
AFrom committee: Do pass. (Ayes 12. Noes 1.) (September 11).
Sep 12, 2025
ARead second time. Ordered to third reading.
Sep 12, 2025
AAssembly Rule 63 suspended.
Sep 12, 2025
ARead third time. Passed. (Ayes 59. Noes 7. Page 3432.) Ordered to the Senate.
Sep 13, 2025
SIn Senate. Concurrence in Assembly amendments pending.
Sep 13, 2025
SAssembly amendments concurred in. (Ayes 29. Noes 8. Page 3039.) Ordered to engrossing and enrolling.
Sep 23, 2025
Enrolled and presented to the Governor at 2 p.m.
Sep 29, 2025
Approved by the Governor.
Sep 29, 2025
Chaptered by Secretary of State. Chapter 138, Statutes of 2025.
Progress
Introduced
Engrossed
Enrolled
Passed
Signed into lawSep 29, 2025
Sponsors
SW
Sen. Scott Wiener (D)Prime sponsor
SR
Sen. Susan Rubio (D)
Sources
Always verify against the official source. Summaries are AI-generated and may contain errors.