Prosecutor used flawed AI to keep California man in jail, his lawyers say

When Kyle Kjoller, a 57-year-old welder, was ordered held without bail in Nevada County, California, in April, he protested. The charges against him — multiple counts of illegal gun possession — were not grave enough under California law to warrant keeping him in jail for months awaiting his trial, he argued.

Prosecutors disagreed, and offered 11 pages’ worth of reasons. But the brief they filed, Kjoller’s lawyers contend, was rife with errors that bear the hallmarks of generative artificial intelligence.

The lawyers soon turned up briefs in four…