Exactly, I use ChatGPT for more than grammar: article summarization, as an assistant to learn new things, image generation with DallE, etc.

But I keep using Grammarly for grammar because the UI is optimized for that use case. That's my point. ChatGPT is very powerful, but the chat interface is not optimized for every use case (is like the Excel of the next generation).

The parent comment suggests that ChatGPT killed Grammarly... but Grammarly will kill itself if they don't focus on a superb UX optimized for their use case. The differentiator factor for any AI product will be a laser focus on a good UX for their specific audience.