OpenAI has seen disappointing results in its partnership with Apple to integrate ChatGPT into Siri, according to court documents filed [PDF] in its ongoing legal dispute with Elon Musk, SpaceXAI (known as xAI when the lawsuit was filed).
See also: Musk drops lawsuit against Apple over ChatGPT Siri deal
Apple added ChatGPT to Siri in December 2024, but users had to go through a multi-step opt-in process, which added a level of difficulty. By January 2025, OpenAI reported that the integration was off to a “slow start,” and the company lowered its forecast for the number of additional connected weekly active users it expected to gain from the partnership.
Much of the document is redacted, but OpenAI said that by the time Musk’s companies filed suit against Apple and OpenAI, “it was clear that Apple’s ChatGPT implementation was dramatically underperforming.” In a later part of the document, OpenAI again said that Apple’s implementation “demonstrates ongoing underperformance,” leading to a conversation in March 2026 between Apple and OpenAI that is 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 as [ChatGPT].” Apple told OpenAI that it planned to integrate one provider and then add more, and made similar statements publicly when it announced the feature. Apple also signed an agreement with Google, and its newer models are based on Gemini.
See also: Apple's Siri AI may be replaced by Claude and ChatGPT
OpenAI’s filing disputes many of the allegations in xAI’s lawsuit. Musk alleged that OpenAI and Apple had an exclusive agreement and that the agreement hurt xAI’s development and customer acquisition. OpenAI says the contract proves there was no exclusive agreement, and even if there was, xAI can’t prove harm because integrating ChatGPT into Siri 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 they are not), the amount of foreclosure caused by the Settlement is arguably minimal. While Plaintiffs’ experts declined to calculate foreclosure rates, OpenAI’s expert, Dr. Catherine Tucker, estimated the share of AI consumers who accessed ChatGPT through Apple Intelligence using multiple metrics with the same data and market definition that Plaintiffs’ experts relied on.
Based on these assumptions, Dr. Tucker found exclusion rates of [REDACTED] across all metrics, consistent with OpenAI's internal view that Apple Intelligence had minimal use.
See also: OpenAI launches ChatGPT for Financial Services
Musk's companies dropped their claims against Apple earlier this month, leaving OpenAI as the sole defendant in the lawsuit. OpenAI's filing asks the court to dismiss xAI's claims ahead of a trial scheduled for January 2027.
