An expert witness hired by 3M uses ChatGPT to draft substantial portions of a report connected to a lawsuit over a Houston-area explosion that killed three people and damaged about 200 homes, according to court records reported by multiple outlets. The report prepared for 3M is described as being up to largely generated or substantially composed by the AI system.

The New York Post reports that the drafting involved content produced by ChatGPT and that the expert charged about $90,000 for the report. Breitbart similarly says the witness “used ChatGPT” and that court materials reflect the use of the tool while preparing the expert report for 3M’s defense. Both accounts characterize the issue as one of disclosure and the extent of AI involvement in expert work, though they differ in emphasis: one highlights the reported percentage of AI-generated content and the fee, while the other focuses on the discovery that the witness relied on ChatGPT during the process. The underlying civil case and allegations against 3M remain separate from the reported dispute about the expert report’s preparation.