A developer known as pdfu has shown how to integrate Anthropic's Claude AI with Apple's Siri on macOS Golden Gate, according to a recent report. The method, shared on September 13, uses internal APIs that Apple has not made public. In this setup, Claude appears in Siri's "Ask..." menu, which also includes ChatGPT. This integration is made possible through the Model Delegation API, an internal part of Apple's App Intents framework that allows apps to replace Siri's default AI with an external model. In this case, the AI responding to user queries is not Apple's but instead Anthropic's Claude. The technique requires a special permission, called an "entitlement," that Apple typically reserves for its own applications. This allows the third-party AI to interact with the system in a way that mimics native Siri features. However, the integration is not complete. While Claude can perform tasks that Siri cannot—like generating a CSV file—system actions like setting a reminder are still handled by Siri. The native capabilities of Apple devices remain controlled by Siri, and the third-party AI relies on Siri's framework rather than replacing it entirely. Apple has designed its system to support third-party AI models like Claude, Gemini (from Google), and ChatGPT (from OpenAI). However, the company has not emphasized this capability during its annual developer conferences, despite the framework being available. Apple is heavily investing in the new version of Siri, aiming to integrate it into future connected home devices. Since January 2026, Apple has used Google's Gemini AI for the server part of Siri, an agreement worth around $1 billion annually. ChatGPT was integrated into iOS in late 2024. The current method of integrating third-party AI models relies on private APIs, which are unstable and not guaranteed for future support by Apple. Additionally, there are privacy concerns, as routing Siri's requests to external AI servers like Anthropic's could expose user data outside of Apple's secure infrastructure. In France, the new Siri features are not expected to be available at launch, indicating a potential delay in rollout for the region.