Edit: ChatGPT and Claude are both fine IMO. Claude has a better ear for language, but ChatGPT’s memory is very useful for letting you save info about your preferences, so I’d say they come out about even. For ChatGPT in particular, you’ll want to put whatever prompt you ultimately come up with into your custom instructions or its memory; that way all new conversations will start off pre-prompted.
In addition to borrowing others’ prompts as Nathan suggested, try being more specific about what you want (e.g., ‘be concise, speak casually and use lowercase, be sarcastic if i ask for something you can’t help with’), and (depending on the style) providing examples (ETA: e.g., for poetry I’ll often provide whichever llm with a dozen of my own poems in order to get something like my style back out). (Also, for style prompting, IME ‘write in a pastiche of [author]’ seems more powerful than just ‘write like [author]’, though YMMV).
Edit: ChatGPT and Claude are both fine IMO. Claude has a better ear for language, but ChatGPT’s memory is very useful for letting you save info about your preferences, so I’d say they come out about even.
For ChatGPT in particular, you’ll want to put whatever prompt you ultimately come up with into your custom instructions or its memory; that way all new conversations will start off pre-prompted.
In addition to borrowing others’ prompts as Nathan suggested, try being more specific about what you want (e.g., ‘be concise, speak casually and use lowercase, be sarcastic if i ask for something you can’t help with’), and (depending on the style) providing examples (ETA: e.g., for poetry I’ll often provide whichever llm with a dozen of my own poems in order to get something like my style back out). (Also, for style prompting, IME ‘write in a pastiche of [author]’ seems more powerful than just ‘write like [author]’, though YMMV).