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ARTICLE · 16 FEBRUARY 2026

California Courts Send Clear Message: AI Shortcuts Have Serious Consequences

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The unanimous decision in Kjoller v. Superior Court of Nevada County marks a turning point in how California courts will handle AI-generated hallucinations in legal filings.

United StatesTechnology
Todd C. Toral
Todd C. Toral
Logan Bac
Logan Bac
Sadie Soholt
Sadie Soholt

When a Nevada County prosecutor cited three completely fabricated cases in court—and then blamed "scrivener's errors"—the California Supreme Court had seen enough.

The unanimous decision in Kjoller v. Superior Court of Nevada County marks a turning point in how California courts will handle AI-generated hallucinations in legal filings. Combined with the recent passage of SB 574 by the California Senate, the message to practitioners is unmistakable: the era of plausible deniability for AI mistakes is over.

The Case That Changed Everything

The facts in Kjoller read like a cautionary tale written specifically for the AI age. A Nevada County District Attorney submitted a response brief citing eight cases. Three didn't exist at all. Three more existed but said nothing resembling what the DA claimed. Even a cited constitutional provision was irrelevant to the point being argued.

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