How do use Siri with the ChatGPT iOS app?
Simply trigger Siri (by using the Home button or saying "Hi Siri") and then... either, "Ask ChatGPT", "Send a question to ChatGPT", "Query ChatGPT", or "Tell ChatGPT" to ask a question to the ChatGPT iOS app.
How do I use Shortcuts with the ChatGPT iOS app?
See Apple's Shortcuts guide for details on working with Shortcuts.
Below is a demo example made on an iPad using a combination of the ChatGPT iOS app + talking to Siri to ask ChatGPT a question + use a Shortcut to summarize a prompt output as a haiku:
Siri: Ask Siri your question -> your question is converted to your prompt in ChatGPT -> ChatGPT responds:
Copy/paste the entire response generated by ChatGPT to your clipboard (you can copy/paste any text here it doesn't have to be text from ChatGPT):
Shortcut: Let's say we want to summarize any text, in the clipboard. We'll use a Shortcut that starts a new ChatGPT conversation with the inputs: the text copied from the clipboard + the added text, "Summarize the text above please in the form of a haiku."
The response will be added in the result of the Shortcut: