Court filings: OpenAI says Apple's ChatGPT-in-Siri integration 'dramatically underperformed'
Filings reported on Sept 23, 2026 (FT, then Reuters and Apple press) in SpaceXAI's antitrust suit over the Apple–OpenAI deal show OpenAI arguing that ChatGPT's integration in Siri and Apple Intelligence, launched in December 2024, was "dramatically underperforming" and "persistently underperforming". OpenAI had cut its user forecasts by January 2025, and Apple had refused its request for two years of exclusivity. OpenAI uses this to rebut the claim that the deal locked rivals out.
Key facts
- Case: SpaceXAI (then xAI) and X v. Apple and OpenAI, antitrust suit filed August 2025 in the US District Court for the Northern District of Texas (Judge Mark Pittman); trial set for January 2027 (9to5Mac, MacRumors)
- OpenAI: 'it was clear that Apple's integration of ChatGPT was dramatically underperforming'; by January 2025 it described the rollout as 'off to a slow start' and cut its forecast of incremental logged-in weekly users
- OpenAI had expected a 'halo effect' from Apple; the feature is off by default and needs a multi-step opt-in
- OpenAI asked Apple for a two-year exclusivity window; Apple refused and said it planned to add more providers (it later chose Gemini for Siri AI)
- MacRumors: xAI dropped its claims against Apple in mid-September 2026, leaving OpenAI as the sole defendant
What happened
The filings are OpenAI's defence against the claim that Apple and OpenAI colluded to exclude competing AI apps. OpenAI's argument is that the partnership delivered very little usage, so it could not have foreclosed rivals. The documents give rare internal numbers on how little iPhone users used the ChatGPT hand-off in Siri.
Why it matters
Distribution through the iPhone was expected to be a major advantage for OpenAI in 2024. The filings show it was not, and Apple has since moved its core Siri AI to Google's Gemini.
Changelog
- 2026-09-30: created (resolves the leads.md line on the Apple–OpenAI court documents)
Related events
- WWDC 2026: Apple unveils Siri AI and new Apple Foundation Models built with Google's Gemini ★★★★
- Apple ships iOS 27 with Gemini-assisted "Siri AI" after unveiling the 2nm A20 Pro iPhone 18 Pro ★★★★
Sources (4)
- press9to5Mac: OpenAI says Apple Intelligence users showed little interest in ChatGPT integration
- pressMacRumors: ChatGPT in Siri 'persistently underperforming,' says OpenAI
- pressAppleInsider: ChatGPT as an extension in Siri dramatically underperformed, says OpenAI
- pressTechRadar: OpenAI complains ChatGPT in Siri was 'dramatically underperforming'
id: 2026-09-23-openai-says-apple-chatgpt-integration-underperformed · updated 2026-09-30 · open in the interactive timeline