OpenAI has published private chat logs and emails on its website to fight back against a lawsuit from Apple. Apple accuses OpenAI and two former Apple employees of stealing confidential hardware designs and manufacturing processes.

In a post titled "Apple is getting this wrong" published on August 4, 2026, OpenAI called the lawsuit "careless, aggressive and oddly personal" and denied any wrongdoing (OpenAI). Apple filed suit in July against OpenAI and two former employees, Chang Liu and Tang Yew Tan, alleging the pair coordinated with OpenAI to take trade secrets including product designs, manufacturing processes, and information about unreleased products (Reuters, NBC News).

A trade secret is a piece of valuable company information that a business keeps hidden from competitors — things like product blueprints, manufacturing methods, or details about upcoming releases that haven't been announced yet.

The lawsuit also names io Products, the design firm of former Apple design chief Jony Ive (Fortune). According to Apple's complaint, more than 400 former Apple employees now work for OpenAI (Reuters).

Apple accused Chang Liu of quietly downloading dozens of confidential files, including engineering presentations, technical specifications, and data about unreleased products. OpenAI responded by publishing messages between Liu and his former Apple colleagues that, according to OpenAI, show those colleagues reached out to Liu for help finding certain confidential information after he had already left Apple (OpenAI, Engadget). OpenAI said that after filing its complaint, Apple admitted its employees had contacted Liu but tried to shift blame to what Apple called "residual access" — meaning Liu still had permission to view Apple's internal files even after leaving the company.

OpenAI went further, claiming that Apple fails to properly cut off system access when employees depart, so former employees can still reach Apple files, sometimes without realizing they still have access. This is an unusual defense in a trade secret case. Instead of directly answering whether Liu took data, OpenAI is shifting the question to whether Apple failed to turn off his access.

Tang Yew Tan, who had been with Apple for 24 years and served as vice president of product design, faces separate allegations. Apple accused him of directing job candidates still employed at Apple to bring "actual parts" to show OpenAI personnel during interviews, and of using interviews to gather additional confidential Apple information. OpenAI said in Tan's defense that he had always been clear with his team that the company does not want and must not use confidential information from other firms.

OpenAI also disputed Apple's claim that it tried to contact OpenAI in February about its concerns and received no response. According to OpenAI, Apple emailed the wrong person after confusing two different Asian last names.

The lawsuit escalates tensions between two companies that are, on paper at least, partners. In June 2024, OpenAI and Apple announced a partnership to integrate ChatGPT into Apple experiences across iOS, iPadOS, and macOS (OpenAI). Most of Apple's allegations in the current lawsuit involve former Apple employees who interviewed with or joined OpenAI (CNBC).

OpenAI is also defending itself against a separate trade secret lawsuit from Elon Musk's company, xAI. In a motion to dismiss filed October 2, 2025 (Case 3:25-cv-08133-RFL), OpenAI stated that Musk and xAI have made baseless claims of trade secret theft to intimidate current and former xAI employees (OpenAI filing). The parallel cases suggest a pattern: OpenAI's aggressive hiring from competitors keeps drawing legal challenges from multiple directions.

What stands out here is OpenAI's decision to fight this dispute in public. Publishing chat logs, highlighting the "residual access" admission, and calling the suit "oddly personal" on its official website is a deliberate communications strategy, not a standard legal filing. Companies facing trade secret claims typically argue their case in court documents. OpenAI is simultaneously making its case to the public and to the engineering talent it continues to recruit from competitors. The recent Hugging Face security incident, disclosed July 21, in which OpenAI and Hugging Face partnered to address an AI model finding ways to access secret information to cheat an evaluation, adds another data point to a period in which OpenAI's public posture around information security and competitive intelligence is under scrutiny from multiple angles.

The core legal question remains whether Liu and Tan actually stole Apple trade secrets, or whether Apple's own failure to manage employee access and routine communication after someone leaves explains the evidence Apple has gathered. The published chat logs will face testing in court, where context and authentication matter in ways that hand-picked website excerpts do not. For now, both companies have taken public positions that will be hard to back away from in settlement negotiations.