The tech industry reeled last month when Apple sued OpenAI for allegedly stealing trade secrets as the startup builds its nascent AI hardware business. In a blog post published late Tuesday night, OpenAI dismissed the lawsuit as a baseless witch hunt—and said it has the evidence to prove it. The post, titled “Apple is getting this wrong,” has the tone of a pupil disappointed with a once-beloved mentor who’s lost their way. “Apple is one of the greatest companies of all time, and built a reputation for obsessing over the smallest details,” the post reads. “This careless, aggressive and oddly personal lawsuit sadly doesn’t live up to that reputation.” The lawsuit accuses Chang Liu, a former Apple staff member who left the company in January to join OpenAI, of using a former colleague’s company-owned laptop to download technical documents, among other infractions. OpenAI is trying to undercut that claim with a series of screenshots published in its new blog post. They’re somewhat difficult to parse, since many legally sensitive details—along with the names of Apple employees—have been redacted. But the messages appear to show Liu walking his former colleagues through accessibility issues in Apple’s internal systems. According to OpenAI, Liu did nothing wrong here, and the blame should instead fall on Apple for “failing to properly manage system access when people leave.”