California

Does California require attorneys to disclose AI use in court filings? No — not yet. California's Rule 10.430 and Standard 10.80, adopted July 2025 and effective September 2025, created the first and largest state court AI governance framework in the country. But here's the catch: it governs court staff and operations, not attorney filings.

That distinction matters. If you're a managing partner worried about compliance, California won't penalize your associates for using AI to draft a motion. The rules target how courts themselves deploy AI tools — think automated case management, not brief writing. California chose to regulate the bench before the bar.

What Rule 10.430 and Standard 10.80 Actually Cover

Rule 10.430 establishes governance requirements for California courts using AI and automated decision-making tools. Standard 10.80 sets operational guidelines for court staff interacting with these systems. Together, they require courts to inventory AI tools, assess risks, ensure human oversight of AI-assisted decisions, and maintain transparency about when AI is involved in court operations. The rules explicitly apply to judicial officers and court personnel — not to attorneys or litigants.

Why There's No Statewide Attorney Disclosure Mandate

California's approach is deliberate. The Judicial Council concluded that existing Rules of Professional Conduct — particularly the duties of competence (Rule 1.1), candor (Rule 3.3), and supervision (Rules 5.1 and 5.3) — already cover attorney AI use. A lawyer who submits AI-hallucinated case citations violates candor obligations regardless of whether a specific AI disclosure rule exists. The State Bar's Committee on Professional Responsibility and Conduct has signaled that standalone AI ethics opinions may follow, but as of early 2026, none have been issued.

How California Differs from Federal Court AI Rules

Federal courts in California have been far more aggressive. The Central District (CDCA) requires attorneys to disclose AI-generated content in filings. The Northern District's Standing Order 25-01 imposes certification requirements. California state courts have no equivalent. This creates a split: the same attorney filing the same type of motion in state court and federal court faces different disclosure obligations depending on which courthouse they walk into. Managing partners with multi-forum practices need parallel compliance protocols.

Practical Compliance for California Attorneys

Even without a mandatory disclosure rule, California attorneys aren't off the hook. First, verify every AI-generated citation independently — the duty of candor hasn't changed. Second, don't assume court staff AI policies won't affect your practice; if a court's AI system flags an issue with your filing, you'll need to respond. Third, watch the State Bar closely. The California Lawyers Association's AI Task Force has been actively developing guidance, and a formal ethics opinion could drop with little warning. Fourth, document your AI workflows now. When rules do come — and they will — firms with existing protocols will adapt faster than those scrambling from scratch.

What's Coming Next in California

The Judicial Council's Technology Advisory Committee is actively reviewing whether attorney-facing AI rules are needed. Multiple California judges have issued individual standing orders requiring disclosure in their courtrooms, creating a patchwork within the state system. Assembly bills addressing AI in legal practice have been introduced in successive legislative sessions. The trajectory is clear: California will eventually regulate attorney AI use. The only question is whether it comes through the Judicial Council, the State Bar, or the legislature.

The Bottom Line: California regulates court staff AI use through Rule 10.430 and Standard 10.80, but has no statewide attorney disclosure mandate — verify citations, document your workflows, and watch the State Bar for incoming rules.