OpenAI considered notifying Canadian authorities about an account later linked to a deadly school shooting.
The company said its systems flagged the profile in June for potential “furtherance of violent activities”.
Staff reviewed whether to contact the Royal Canadian Mounted Police.
They decided the activity did not show an imminent or credible threat of serious harm.
Company policy requires that threshold before a referral to law enforcement.
Months later, 18-year-old Jesse Van Rootselaar killed eight people in Tumbler Ridge, British Columbia, before taking their own life.
Police said the victims included a teaching assistant and several students.
The attacker had previous mental-health-related contact with officers.
After the shooting, OpenAI voluntarily provided information about the account to investigators.
The company said it is continuing to assist the inquiry.
The motive for the attack remains unclear.
The tragedy is Canada’s deadliest mass killing since the 2020 Nova Scotia rampage.
