ChatGPT is the model most people meet first. That's both its strength and its main pain point: the default voice is the AI voice everyone has internalized as 'an AI wrote this' — hedged openings, three-part bullets, sentences that end with 'and so much more.' All of it is fixable with the prompt below; ChatGPT follows custom instructions reliably.
Hedged. Structured. Tends to summarize before answering, then summarize again at the end. Bullet-heavy in 'professional' contexts. Adds disclaimers when none were asked for.