OpenAI has had disappointing results working with Apple to integrate ChatGPT into Siri, according to court documents filed (PDF) as part of its ongoing legal battle with Elon Musk’s company SpaceXAI (xAI at the time of the lawsuit filing).
Apple added ChatGPT to Siri in December 2024, but users had to go through a multi-step sign-up process, which added a layer of friction. In January 2025, OpenAI said the integration was “off to a slow start” and the company reduced its forecast for the number of additional connected weekly active users it hoped to achieve through the partnership.
Much of the filing is redacted, but OpenAI said that by the time Musk’s companies filed an antitrust lawsuit against Apple and OpenAI, “it was clear that Apple’s integration of ChatGPT was significantly underperforming.” In a later section of the filing, OpenAI again said Apple’s integration was “consistently underperforming,” leading to a March 2026 conversation between Apple and OpenAI that was redacted.
OpenAI asked Apple for a two-year exclusivity period, but Apple refused. The agreement between the two companies explicitly stated that the agreement was non-exclusive and that Apple had the right to “integrate products or services that provide the same or similar functionality to (ChatGPT).” Apple told OpenAI that it plans to onboard one provider and then add more, and it made similar statements publicly when announcing the feature. Apple also signed a deal with Google and Apple’s most recent models are based on Gemini.
OpenAI’s filing disputes many of the allegations in the xAI lawsuit. Musk alleged that OpenAI and Apple had an exclusive agreement and that this agreement was harming xAI’s growth and customer acquisition. OpenAI claims the contract proves there was no exclusive agreement, and even if there was, xAI can’t prove harm because the ChatGPT Siri integration simply didn’t attract many new ChatGPT users.
Even if the Court assumes that Apple users who choose to use ChatGPT through Apple Intelligence are excluded from OpenAI’s competitors (which is not the case), the amount of exclusion caused by the agreement is undoubtedly minimal. While plaintiffs’ experts declined to calculate seizure shares, OpenAI expert Dr. Catherine Tucker calculated the share of GenAI consumers who accessed ChatGPT through Apple Intelligence across multiple metrics using the same data and market definition relied upon by plaintiffs’ experts. Based on these assumptions, Dr. Tucker saw seizure shares of (REDACTED) across all metrics, which is consistent with OpenAI’s internal view that Apple Intelligence saw minimal usage.
Musk’s companies dropped their lawsuits against Apple earlier this month, leaving OpenAI as the sole defendant in the suit. OpenAI’s filing asks the court to dismiss xAI’s allegations ahead of a trial scheduled for January 2027.
