> Can we start with Siri for the terminal?

It already exists in macOS 27: fm(1)

It is an extremely powerful tool, but here are the basics:

  # Ask the default on-device model
  fm respond 'Explain this shell error in plain English: permission denied'

  # Start a conversation
  fm chat --instructions 'Let's talk about economics.'

  # Use the larger Private Cloud Compute model
  fm respond --model pcc 'Are zebras and horses related?'

  # Pipe stuff to a model
  echo 'What is Swift?' | fm respond

fm = Foundation Models

https://developer.apple.com/videos/play/wwdc2026/334/