Claude Opus 5 Is Here: 8 Prompts To Actually Use Your Smartest Model

You're my sharpest, most honest thinking partner. I'm about to make a decision and I want you to pressure-test my reasoning, not cheerlead it.

The decision: [describe it and the option you're leaning towards]
Why I'm leaning that way: [your current reasoning]
What's at stake: [time / money / relationships / etc.]
My constraints: [budget, timeline, non-negotiables]

Do this, in order:
1. Play back the decision you think I'm making, in one sentence, so we're aligned.
2. Give me the 3 strongest arguments FOR my leaning option, and the 3 strongest AGAINST.
3. Surface the assumptions I haven't questioned — things I'm treating as fixed that might not be.
4. Tell me what a smart person who disagrees with me would say.
5. Ask me the 2 questions I most need to answer before I decide.

Don't tell me what to choose. Sharpen my thinking so I can choose well.

I'm going to brain-dump everything rattling around in my head. It'll be messy and out of order. Your job is to turn it into calm, not more noise.

Here's the dump:
[paste everything — tasks, worries, half-thoughts, deadlines, all of it]

Then:
1. Sort it into: Do this week / Do later / Waiting on someone else / Not actually mine to carry.
2. Flag the 3 things that, if I did them first, would make everything else easier or unnecessary.
3. Point out anything I've written down that's a worry, not a task — and name it as such.
4. Give me one realistic first move I can make in the next 10 minutes.

Keep it tight. I want to feel lighter, not managed.

I want to actually understand [topic], not just nod along. Assume I'm smart but new to this.

Teach me like this:
1. Explain the core idea in plain English, using an analogy from everyday life.
2. Show me the 20% of this topic that explains 80% of it.
3. Walk one example through from start to finish.
4. Quiz me with 3 questions that get progressively harder — and wait for my answers before revealing yours.
5. At the end, tell me what most people get wrong about this.

Don't dump everything at once. Build my understanding step by step.

I have a conversation coming up that I'm nervous about. I want to think clearly before I walk in — not script a fake version of myself.

The situation: [who, what it's about, what happened]
What I want out of it: [your real goal]
What I'm afraid will happen: [your fear]

Help me:
1. Separate what I actually want from what I'll want to say in the heat of the moment.
2. Show me how the other person likely sees this — steelman their side.
3. Give me 2 or 3 honest ways to open the conversation that don't put them on the defensive.
4. Play the other person and let me practise — respond as they realistically might, and push back where they would.

Be direct with me if I'm being unfair or dodging the real issue.

Help me think clearly about a money decision. You're not my financial adviser — you're a sharp friend who's good with numbers and helps me see the full picture before I decide.

The decision: [e.g. pay down debt vs. save, upgrade vs. wait, audit my subscriptions]
The numbers: [income / costs / amounts / timeframes you're happy to share]
What matters to me: [security, flexibility, a specific goal]

Do this:
1. Lay out my realistic options as a simple comparison — what each one costs and what it buys me.
2. Show the trade-offs in plain terms, including ones I might not have considered.
3. Model the "what if I'm wrong" version of each option.
4. Tell me the one question I should answer for myself before I commit.

Check your own maths before you show me. Flag anything I should confirm with a professional.

I have a goal I keep "meaning to get to" and never do. Help me turn it into a plan I'll actually follow.

The goal: [what you want, and by when]
Where I'm starting from: [current reality, honestly]
Time I can realistically give it: [hours per week]
What's derailed me before: [be honest]

Build me:
1. The finished outcome in one clear sentence, so I know what "done" looks like.
2. The path backwards from there to today, in phases — not a scary 40-step list.
3. The first phase broken into small, specific actions.
4. My likely failure point (based on what's derailed me before) and one guardrail for it.

Then check your own plan: is the first step small enough that I'd do it even on a bad week? If not, shrink it.

Be my weekly reflection partner. Don't organise my calendar — help me think about my week so I steer it instead of just surviving it.

Ask me these one at a time, waiting for each answer:
1. What actually mattered last week, and did my time reflect that?
2. What am I dreading this week, and what's underneath the dread?
3. What's one thing I keep carrying that I could put down, hand off, or say no to?
4. If this week went genuinely well, what would be true by Friday?

After my answers, reflect back the one theme you're hearing and the single decision that would make the biggest difference. Keep me honest — don't let me off the hook with vague answers.

I'm stuck on something and I can't tell if it's a real problem or a story I'm telling myself. Help me untangle it.

Here's what's going on: [describe the situation and how you feel about it]

Do this:
1. Separate the facts from the interpretation — what actually happened vs. the meaning I've added.
2. Name the story I seem to be telling myself.
3. Offer 2 other ways an outside observer might reasonably read the same facts.
4. Ask me the one question that would tell me which reading is true.

Be gentle but honest. I'd rather see clearly than feel comforted.