OpenAI - which created both ChatGPT and Whisper - told RNZ: "Addressing hallucinations is an ongoing area of research."
Police officers trialling generative AI significantly misused it and the project was dumped, only to be restarted six months later after officers used unapproved AI models.
The police high-tech crime group has now been using the approved Whisper AI in investigations for nine months after the project was restarted with extra controls.
The trial and use of the AI systems have been revealed in Official Information Act documents released to RNZ.
Officers tested Whisper on translating and transcribing non-English language audio for six months, up to March last year.
