How do I make AI writing sound less like a robot and more human?

You make AI writing sound human by giving it a specific voice to mimic, not just asking it to "sound casual." The real problem isn't that AI can't write naturally. It's that we give it vague instructions. "Write conversationally" means nothing to a machine. But "write like you're explaining this to a friend over coffee, using contractions, occasional sentence fragments, and one self-deprecating joke" — that actually works. I've found the best approach is a two-step process. First, paste in a sample of writing you like. Tell the AI: "Match this tone." It's surprisingly good at voice matching when it has a concrete example. Second, after it generates something, run a quick manual edit. Look for the usual suspects: sentences all the same length (real humans vary wildly), words nobody actually says out loud like "moreover" or "utilize," and transitions that feel like a high school essay. A practical example: instead of prompting with "write a friendly blog intro about productivity," try "write a 3-sentence intro about why productivity advice is mostly garbage. Start with a question. Use the word 'honestly' somewhere. Sound slightly annoyed but helpful." The difference is night and day. For a deeper dive, see our guide on fixing AI writing that sounds too formal. One thing nobody mentions: reading your AI draft out loud catches 90% of robotic phrasing instantly. Your ear knows what your eyes miss. **Related**: Why does AI writing sound so formal? | What's the best prompt to make AI write like me?