California leads the nation on AI regulation for lawyers and it's not close. From the State Bar's 2023 Practical Guidance to Formal Opinion 2023-204 to the California Supreme Court's August 2025 directive to the COPRAC-proposed rule amendments in March 2026, California has built the most comprehensive AI framework for attorneys in the country. If you practice in California with its 181,048 licensed attorneys, you're operating under real rules with real teeth.
AI Regulation in California: The Current Landscape
California's AI regulatory framework for lawyers began in 2023 and has accelerated every year since. The State Bar published comprehensive 'Practical Guidance for the Use of Generative Artificial Intelligence in the Practice of Law' in 2023, establishing foundational principles. That same year, the State Bar issued Formal Opinion 2023-204 addressing AI in legal practice directly.
On August 22, 2025, the California Supreme Court took the decisive step of directing the State Bar to incorporate AI principles into the formal Rules of Professional Conduct. This moved AI governance from advisory guidance to binding rules territory. The court's directive made clear that voluntary compliance was transitioning to mandatory compliance.
On March 13, 2026, COPRAC (Committee on Professional Responsibility and Conduct) approved proposed amendments to six Rules of Professional Conduct: Rules 1.1 (Competence), 1.4 (Communication), 1.6 (Confidentiality), 3.3 (Candor), 5.1 (Supervisory Duties), and 5.3 (Supervision of Nonlawyers). These amendments explicitly address AI obligations including agentic AI tools. The public comment period ends May 4, 2026. These aren't suggestions. They're the framework that will govern how 181,048 California attorneys use AI.
What the California Bar Says About AI
The State Bar of California's guidance is the most detailed in the country. The 2023 Practical Guidance document establishes that attorney competence requires understanding large language models before use, including the risks of hallucinations and data privacy concerns. It's not enough to know how to prompt the AI. You need to understand what the AI is doing and where it fails.
Formal Opinion 2023-204 applies the Rules of Professional Conduct directly to AI use scenarios. It addresses competence requirements, confidentiality obligations when using AI systems, disclosure duties, and the boundaries of permissible AI use in client matters.
The March 2026 COPRAC-proposed amendments go further than any state has gone. The amendments to Rule 5.3 address supervision of AI tools explicitly, including agentic AI, which refers to AI systems that can take actions autonomously rather than just generating text. This is forward-looking regulation that addresses where AI is heading, not just where it is today. The Rule 1.1 amendments make AI competence an explicit part of the duty of competence. The Rule 1.6 amendments address confidentiality risks specific to AI systems. California isn't just keeping up with AI development, it's writing the rules other states will eventually adopt.
Court Rules and Judicial Guidance
The California Supreme Court's August 22, 2025 directive to the State Bar to incorporate AI principles into the Rules of Professional Conduct is the most significant court-level action on AI in any state. This wasn't a suggestion or a study committee. It was the highest court in the state ordering the regulatory body to codify AI rules.
The COPRAC-proposed amendments currently in public comment are the direct result of this directive. Once finalized (expected after the May 4, 2026 comment deadline), these will become binding court rules governing AI use by every attorney licensed in California. Individual California courts haven't needed to issue separate AI standing orders because the state is building a comprehensive framework from the top down.
Practical Implications for California Attorneys
California attorneys don't have the luxury of treating AI governance as optional. The Practical Guidance, Formal Opinion 2023-204, and the incoming rule amendments create a clear compliance framework. Firms in Los Angeles, San Francisco, San Diego, San Jose, Sacramento, and Orange County need to be building their AI policies around these specific requirements now.
The COPRAC-proposed amendments to Rule 5.3 on agentic AI supervision are particularly significant. As AI tools evolve from text generators to autonomous agents that can research, draft, file, and communicate, California is establishing supervisory standards ahead of widespread adoption. Firms that wait to address these requirements until after the rules are finalized will be behind.
The billing implications are real. California's framework, combined with the ABA's guidance on AI and billing, means that attorneys can't bill 10 hours for work that AI completes in 2. The value billing question is one of the most consequential practical issues for California firms adopting AI, and the regulatory framework is pushing toward transparency.
What Attorneys in California Should Do
First, read the COPRAC-proposed amendments to Rules 1.1, 1.4, 1.6, 3.3, 5.1, and 5.3 before the May 4, 2026 comment deadline. Understand what's coming. If you have positions on the proposed language, submit comments. This is your opportunity to shape the rules you'll be governed by.
Second, audit your current AI practices against California's existing guidance. Are your attorneys trained on AI capabilities and limitations as required by the Practical Guidance? Are your confidentiality protocols sufficient for the AI tools you're using? Is your billing transparent about AI-assisted work? Is there a supervisory structure for AI use that meets the standards of Rules 5.1 and 5.3?
Third, develop a written AI policy that addresses the specific requirements in California's framework. This isn't a generic 'be careful with AI' document. It needs to cover: approved AI tools and their data handling practices, training requirements for attorneys and staff, verification protocols for AI-generated content, confidentiality safeguards for client data in AI systems, supervisory structures including oversight of agentic AI tools, and billing practices for AI-assisted work. California's framework is specific enough that your policy needs to be equally specific.
The Bottom Line
California has the most comprehensive AI regulatory framework for attorneys in the country. The combination of the 2023 Practical Guidance, Formal Opinion 2023-204, the Supreme Court's August 2025 directive, and the COPRAC-proposed rule amendments creates binding obligations that every California attorney needs to understand and comply with now, not after the rules are finalized.
AI-Assisted Research. This piece was researched and written with AI assistance, reviewed and edited by Manu Ayala. For deeper takes and the perspective behind the research, follow me on LinkedIn or email me directly.