Comparison

ChatGPT vs Grammarly for workplace writing

Use ChatGPT when you need help thinking through a message. Use Grammarly when you need a second set of eyes before sending it.

Use caseBetter fitWhy
Drafting from scratchChatGPTBetter at turning notes into a first draft.
Grammar and tone checkGrammarlyBuilt for editing inside writing workflows.
Summarizing contextChatGPTCan reason through longer notes and options.
Final send checkGrammarlyLess likely to add unsupported claims.

Best office workflow

Draft in ChatGPT, then polish in Grammarly. Do not let either tool add facts you cannot verify.