The line for me is:
Is the tool creating something new or just reacting based on fixed rules or queries? Siri gets info, it doesn’t generate. So Siri is not. ChatGpt, Gemini are. They generate responses, answers, code, summaries, etc.
Grammarly has integrated new AI features, so some features use generative AI.
See:
https://learn.microsoft.com/en-us/dotnet/ai/conceptual/how-genai-and-llms-work
https://learn.microsoft.com/en-us/ai/playbook/technology-guidance/generative-ai
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola