California Bar Proposes First AI Verification Rule for Lawyers
California Bar unveils proposed ethics rules mandating lawyers verify all AI-generated outputs.
Why it matters: This marks the first time California's ethics rules would specifically address AI, establishing a new standard for lawyer accountability and AI use. The move impacts law firms, in-house teams, and any practitioner relying on AI tools.
- On May 5, 2026, the California Bar proposed amendments to six ethics rules focused on AI use.
- Lawyers would be required to 'independently review, verify, and exercise professional judgment' on AI outputs.
- The proposals follow a 2025 directive from the California Supreme Court.
- Public comments on the amendments closed May 4, 2026.
The State Bar of California's COPRAC recently proposed major amendments to the Rules of Professional Conduct, aiming to directly address how lawyers use artificial intelligence on the job.
- One key change: a comment to Rule 1.1 (competence) would require attorneys to "independently review, verify, and exercise professional judgment regarding any output generated by the technology that is used in connection with representing a client."
- The sweeping package touches several core rules, including competence, client communication, confidentiality, candor toward tribunals, and lawyer and staff supervision.
According to Robert Ambrogi, "the proposed changes would, for the first time, write specific AI obligations into California’s rules." The reforms stem from a directive issued by the California Supreme Court in August 2025, as increasing adoption of generative AI raised ethical and professional concerns within the industry.
The public comment window ran for 45 days and closed on May 4, 2026. Details of the amendments are already public, offering a preview of how lawyers may be regulated when using AI in California.
This shift responds to recent incidents where unverified AI-generated filings jeopardized proceedings, spotlighting the need for proactive guidance and accountability in legal AI use.
By the numbers:
- 6 — Number of ethics rules proposed for amendment to address AI use
- 45 days — Length of public comment period on proposed rules
- May 5, 2026 — Date amendments were introduced by COPRAC
Yes, but: Enforcement and implementation details for the proposed rules have not been finalized.
What's next: The California Supreme Court will determine whether to adopt and implement the proposed amendments.