Claude vs ChatGPT for Productivity: Prompts That Work in Both

This page may contain affiliate links.

If you've spent any time in the UK tech corner of the internet, you'll have seen the endless debate: Claude vs ChatGPT. Which one should you use for work? The honest answer is: it depends on the task, but for most everyday productivity work, both are remarkably capable — and the real skill is knowing how to prompt them well. In this guide, I'll show you the exact prompts that work in both tools, so you can switch between them without missing a beat.

Why Both Tools Are Worth Your Time

Claude (from Anthropic) and ChatGPT (from OpenAI) have different strengths out of the box. Claude tends to be a bit more measured and conversational, great for long-form writing and careful analysis. ChatGPT is often snappier and integrates with a wider ecosystem of plugins and tools. But here's the thing: for 90% of productivity tasks — planning your week, drafting emails, prepping for meetings, staying focused — they're interchangeable, provided you write clear prompts. The prompts below are tested in both. I've used them for months in my own side hustle, and they work.

1. Planning Your Week (The 'Time Audit' Prompt)

Most people start with 'plan my week', which is too vague. Instead, give the AI a snapshot of your actual commitments. Here's the prompt I use:

Prompt: 'Here is my calendar for the next 7 days: [list commitments, including work hours, appointments, family time, and any deadlines]. I also need to fit in [list 2-3 key projects or tasks]. Please create a realistic daily schedule that protects at least 2 hours of deep work each day, and flag any days where I'm overcommitted. Suggest what I could move or drop.'

Both Claude and ChatGPT will produce a sensible plan. The key is to be specific about your constraints — if you need to pick the kids up at 3pm, say so. I've found Claude is slightly better at spotting scheduling conflicts, but ChatGPT is faster at reformatting into a table. Either way, you'll get a plan you can actually follow.

2. Email Triage and Drafting (The 'Tone Shift' Prompt)

Email is where AI shines. But instead of asking it to 'write a reply', give it context and a tone. Here's a prompt that works in both:

Prompt: 'Here is an email I received: [paste email]. I need to reply. My main points are: [list 2-3 points]. The tone should be [professional but friendly / firm but polite / casual]. Keep it under 150 words. Do not use jargon. End with a clear call to action asking for [what you need].'

I've used this for everything from chasing late invoices to declining a meeting request. The trick is the tone instruction — it stops the AI from sounding like a corporate robot. If the first draft is too stiff, just say 'make it warmer' or 'more direct'. Both tools handle this well. For a physical aid, a decent keyboard can make drafting faster — I use a mechanical keyboard for longer writing sessions, but that's optional.

3. Meeting Prep (The 'Devil's Advocate' Prompt)

Before any important call, I run this prompt:

Prompt: 'I have a meeting about [topic] with [stakeholders]. My goal is [outcome]. Here are the key points I plan to raise: [list]. Please act as a devil's advocate and list 5 potential objections or questions they might ask, with suggested responses. Also, suggest one question I should ask that I haven't thought of.'

This is where both tools genuinely shine. ChatGPT tends to give more conventional objections, while Claude often surprises me with a sharper, more lateral question. Run the same prompt in both and you'll get a richer prep sheet. It's like having two different colleagues review your plan — and it's saved me from walking into meetings underprepared more times than I can count.

4. Focus and Deep Work (The 'Task Breakdown' Prompt)

Procrastination often comes from feeling overwhelmed. AI can break a scary task into tiny, doable steps. Try this:

Prompt: 'I need to complete [task, e.g., write a 2,000-word blog post]. Break this into a step-by-step plan with 15-minute increments. For each step, give me a single, clear instruction on what to do. Start with the absolute first action I should take, even if it's just opening a document.'

This works brilliantly in both. The key is asking for 15-minute chunks — it makes the task feel manageable. I've used it to start tax returns, reorganise my filing system, and even clean out my inbox. If you find yourself getting distracted, pair this with a simple productivity planner to track your progress offline.

5. The Done-For-You Shortcut

If you love the idea of these prompts but don't want to tweak them yourself, I've packaged 90 of my best-tested prompts into a single resource. It covers planning, email, meetings, and focus — all battle-tested in both Claude and ChatGPT. It's called the AI Productivity Pack and it costs from £9. If you'd rather copy-paste than craft your own prompts, it'll save you hours of trial and error. No fluff, just prompts that work.

Which One Should You Actually Use?

My honest advice: don't pick a side. Use both. Keep a free account on each, and when you hit a tricky prompt, run it in both and compare. You'll quickly learn which one suits your style for different tasks. For quick, structured output, ChatGPT is often faster. For nuanced, careful reasoning, Claude often edges it. But the real productivity win isn't the tool — it's the habit of using structured prompts. Start with the ones above, adapt them to your own life, and you'll find both AIs become genuinely useful colleagues rather than toys.

One last tip: whatever you do, don't ask either AI to 'be productive' — give it a specific job. The more context you provide, the better the output. That's the secret. Now go plan your week, draft that email, and prep for that meeting. You've got this.