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Free Guide

The AI Toolkit I Use Every Week: ChatGPT vs. Claude vs. Gemini vs. Perplexity (with My Exact Prompts)

Find out YouTube Creator Grace Leung's favorite use cases for each popular AI tool, and her favorite prompts for ChatGPT, Claude, Gemini, and Perplexity.

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Are you paying for ChatGPT, Claude, and Gemini, but still wasting hours switching between them, never sure which one to use?

Or worse, are you sticking to one tool for everything, missing the features that could actually save you time?

I'm Grace Leung, and I've spent two years testing every major AI tool to figure out exactly when to use what. As a digital growth consultant and YouTube creator, these workflows power everything: from client work to content production to running my growth community.

In this guide, I’ll share more about what I’ve learned, what use cases I use for different tools, and some actionable prompts you can try out today.

 

   

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ChatGPT: All-purpose productivity and agent-based automation. Perfect for brainstorming, coding reviews, and setting up recurring research tasks with generous usage limits. 
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Gemini: Large-scale document analysis and Google Workspace integration. Excels at multimodal content (video/image analysis) and creating visual dashboards with its massive 2M token context window.
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Claude: Strategic thinking and voice-matched content creation. Unmatched for maintaining your unique tone, building specialized workflows, and serving as a thought partner for complex decisions. 
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Perplexity: Real-time research with verified sources. The go-to for fact-checking, trend monitoring, and gathering current information with citations you can trust.

A digital growth consultant and YouTube creator (100K+ subscribers), whose spent the last two years testing every major AI tool to power everything from client work to content production to running her growth community.

Who is Grace Leung?

Section 1

Why ChatGPT? Plus Example Prompts

ChatGPT's generous usage limits make it ideal for quick, varied tasks throughout the day, I never worry about hitting capacity. It’s not necessarily the “best” at everything, but it acts like a workhorse that can just keep going. 

ChatGPT's Agent Mode is why I keep coming back. It can browse sites, execute searches, and complete multi-step tasks autonomously—something other AI tools don't offer yet. I schedule ChatGPT to run recurring research tasks—marketing research, weekly industry updates—so the work happens in the background.

 

Use Cases:

This is the killer feature. Agent mode actually browses websites, reads through comments, and compiles real data. I use it for everything from content research to digging through Reddit threads to understand what my audience actually struggles with.

Example Prompts

Section 2

Why Gemini? Plus Example Prompts

Okay, let's talk about Gemini, my favorite tool to use when things get BIG. I'm talking about items like 200-page reports, hour-long meeting recordings, or massive datasets that that other tools struggle with.

With its 2-million-token context window (yes, that's over 1,500 pages), Gemini handles it just fine. Even the web version offers 1 million tokens, which is impressive.

What’s most helpful for me is that I already live in Google Workspace. My entire business runs on Docs, Drive, and Gmail. Gemini lets me create GEMs which are specialized AI assistants that integrate directly with Google Drive. Each GEM has its own expertise and access to relevant files.

 

Use Cases:

Since my files live in Google Drive, Gemini's one-click import is a huge time-saver—no downloading and re-uploading. I can quickly pull in client documents, transcripts, or data files and process them with specialized GEMs I've set up for different tasks.

This integration alone saves me 5+ hours per week of file management.

Example Prompts

Section 3

Why Claude? Plus Example Prompts

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I use Claude more than any other AI models.

90% of my workflows are built on Claude.Yes, the usage limits are annoying, especially those weekly caps that make you ration every message. 

But, its Project feature, tool calling via MCP, and the new Claude Skills let me build powerful, specialized workflows all inside Claude. I have projects set up for content creation, client strategy, data analysis—each with its own context, instructions, and tool connections. While other AIs are still figuring out basic connectors, Claude can orchestrate complex workflows between multiple tools seamlessly.

Claude is also unmatched at understanding nuance and maintaining context. It can actually follow complex instructions without forgetting details halfway through.

Another standout feature is its voice matching. When you give Claude detailed samples of your writing, it nails your tone better than any other AI. I've tested this extensively. That consistency is crucial for brand voice.

Claude excels at multi-variable problem-solving. When I'm weighing options (like whether to launch a new offer or double down on existing services), it considers all the factors I've mentioned. Factoring in time constraints, revenue goals, and audience size, it gives genuinely thoughtful analysis. 

Claude Example Prompts

Section 4

Why Perplexity? Plus Example Prompts

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Perplexity does one thing better than any other AI: real-time search with citations. When I need current information — what happened yesterday, latest statistics, recent updates — Perplexity delivers with actual source links. 

The search capability is exceptional. It's faster than manual Googling and more reliable than asking other AIs about current events. Other models might give you outdated information or make things up. I often found Perplexity’s research results to be more accurate than other AI search engines. 

The different research modes add flexibility. Standard search for quick queries, Deep Research for comprehensive analysis, and Perplexity Labs when you need to combine research with building. 

Pro mode lets you switch between Claude, GPT, and other models. However, the default model is more than sufficient for research. I rarely need to switch Use Cases.

For staying on top of AI developments, algorithm updates, or industry news, Perplexity pulls from the most recent sources. It timestamps everything and prioritizes new information over old, which is critical for fast-moving topics.

Perplexity Example Prompts

My 3-Question Framework: Choosing The Right Tool

Before prompting any AI, I ask myself these three questions, so I can pick the right AI tool for the task.
  • Do I need real-time or current information? If yes, I pick Perplexity.
  • Does this require strategic thinking, nuanced writing, or complex workflows requiring external tool connections? If yes, I go with Claude.
  • Is this a general task, exploration, or do I need AI to autonomously browse the web, navigate sites, or execute tasks? If yes, I opt for ChatGPT or Gemini. If the project involves working with Google tools or large files, Gemini is my top pick.
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What Each Tool Isn't Good For

Understanding limitations is just as important as knowing strengths. Here is where tools struggle, so you know when to proceed with caution. 

  • ChatGPT: Avoid ChatGPT for real-time information needs. It will confidently make up outdated statistics. ChatGPT is also weaker for high-accuracy data analysis compared to other models.
  • Gemini: While excellent for prototyping, it's inconsistent with detailed coding. There’s limited integration support outside Google's ecosystem, which makes it less ideal for complex third-party workflows.
  • Claude: The strict usage limits (especially weekly caps) make it unsuitable for high-volume tasks. I pre-process large datasets with other tools before bringing refined questions to Claude.
  • Perplexity: It's laser-focused on search, but don't expect it to handle general productivity tasks, creative work, or workflow automation. Even when switching between models, they're all optimized for search-based responses.
Grace Leung's YouTube

Your Next Step

These AI workflows helped me scale from solo consultant to running a sustainable business with multiple income streams. They're tested systems I use every single day.

If you want help turning these workflows into a repeatable growth system, join my Growth Community. Inside, you’ll get monthly live workshops, AMAs where you can bring your own business questions, and access to my AI prompt and resource library that is ready to use. 

If you prefer to learn through step-by-step demos, subscribe to my YouTube channel. I publish deep dives on ChatGPT, Claude, Gemini, and Perplexity. I also share real marketing workflows and breakdowns of how I use these tools to run a 6-figure business. Every video is designed to give you at least one workflow you can plug straight into your own work.
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