Models that support on-device processing of Siri requests
iPad mini (5th generation and later)
iPad (8th generation and later)
iPad Air (3rd generation and later)
iPad Pro (11-inch) (all generations)
iPad Pro 12.9-inch (4th generation and later)
Note: iPad needs to download Siri speech models before it can process requests on device. To check if your device uses on-device processing, go to Settings > Siri & Search. If the text below Siri & Dictation History reads “Voice input is processed on iPad,” the Siri speech models have been downloaded.