Five Gemini commands that make it markedly more useful once you know them — plus fifteen more below, twenty in total. All copy-and-paste.
🔑 Why do these actually work?
Worth being clear: these are not official Gemini features and you will not find them in any documentation. They work because the word you type is itself a precise instruction, and the model understands what you are asking for.
Which is good news, because it means you can invent your own. /human and /humanize work equally well, because the model is reading the meaning rather than matching a registered command. Want a mode that does not exist? Name it, say what you want, and it will follow.
⭐ The five from the video
Type it like this: the command on its own line, then what you actually want underneath.
1. Truthmode — It stops agreeing with everything and tells you straight whether your idea holds up.
Truthmode I'm thinking of quitting to go freelance full time. Be honest with me: in my situation, is it worth the risk?
2. ELI5 — Explain it like I am five. However complicated the subject, it comes back simple.
ELI5 What actually is MCP?
3. 80/20 — Finds the 20% of effort that gets most of the result — the fastest route.
80/20 I want to move into a data analyst role within six months. For the least time invested, which 20% gets me 80% of the way there?
4. /human — What comes back reads far more naturally, without the AI flavour.
/human Rewrite this so it sounds like a person wrote it, not an AI: [paste your text]
5. /personalization — Sets how it answers you from then on: more professional, friendlier, funnier, blunter.
/personalization From now on, answer me in Hong Kong Chinese. Keep the tone professional but not stiff, and a bit of humour is fine.
➕ Fifteen more
Same pattern. Tap to copy any of them.
- /steelman Give me the strongest possible version of the case against this idea.
- /devil Argue the other side. Find the biggest hole in this plan.
- /checklist Turn everything above into a checklist I can actually work through today.
- /nolist No bullet points. Write it back to me in full paragraphs.
- /shorter Cut the length in half without losing the meaning.
- /sources Attach a source to every claim. If you have none, say so.
- /assume Before you answer, list every assumption you are making.
- /gaps What am I not thinking about here?
- /rewrite5 Rewrite this five different ways, one sentence each.
- /table Compare these options for me in a table.
- /steps One step at a time. Wait for me to finish before the next one.
- /cantonese Answer me in everyday Hong Kong Cantonese.
- /exec Three sentences, as if you were briefing my boss.
- /risk What is the worst case here, and how do I guard against it?
- /teachback After you explain it, quiz me on it with two questions.
💡 Tips
- Stack them — Truthmode plus /exec gets you the honest answer in three sentences.
- /personalization sticks — Set it once and the rest of that conversation follows it — no need to repeat it.
- Say it again if it drifts — It can slide back to its default voice after a while. Just type the command again.
Don’t memorise these. Once the trick is clear, the commands you write yourself will beat all twenty of mine.
