ChatGPT, Claude, Gemini, Perplexity, Midjourney — there are a lot of names. Here's a friendly tour so you know which is which, and what each one is actually good at.
Introduction
Imagine walking into a hardware store for the first time. There are hammers, screwdrivers, drills, saws — and someone says "they're all just tools." Technically true, completely unhelpful. You need to know which tool fits which job.
AI tools are the same. They look similar from the outside but each is built for slightly different jobs. By the end of this lesson, you'll be able to pick the right one without guessing.
Why this matters
Most beginners pick one tool, hit a limitation, and conclude "AI is bad at this." Often, AI isn't bad — they just picked the wrong tool. Knowing the landscape saves you frustration and helps you sound informed when people start throwing tool names around at work.
The main families of AI tools
There are roughly five categories you'll meet in everyday life:
- Conversational AI — chat with it, ask questions, get answers. (ChatGPT, Claude, Gemini)
- AI search engines — like Google but they read the web and write you an answer with sources. (Perplexity, ChatGPT search)
- Image generation — describe a picture, get an image. (Midjourney, DALL·E, Adobe Firefly)
- Video & voice generation — turn text into a talking video or natural-sounding voice. (Runway, HeyGen, ElevenLabs)
- AI built into apps you already use — Canva, Notion, Google Docs, Microsoft Office. Often the easiest way to start.
The tools you'll hear about most
ChatGPT (OpenAI)
The most famous AI assistant. Great all-rounder: writing, summarising, brainstorming, simple coding, image generation, light research. Has a free tier. Often the first AI people try.
Claude (Anthropic)
A friendly competitor to ChatGPT, especially strong at long documents, careful writing, and thoughtful explanations. Many users find its tone warmer and its writing more natural. Has a free tier.
Gemini (Google)
Google's AI, built into Gmail, Docs, and Android. Strong at tasks where having live Google access helps — quick facts, current events, things tied to your Google account.
Perplexity
Think "Google + AI." You ask a question, it searches the web in real time, and writes you an answer with the source links underneath. Ideal when you want a researched answer, not a guess.
Midjourney & image tools
You type a description, you get an image. Used by designers, marketers, content creators, and curious people who want a custom illustration for their slides.
AI built into your existing apps
Canva has an AI image generator. Notion has an AI writer. Google Docs has "Help me write." Microsoft 365 has Copilot. These often give you 80% of the value with zero new learning curve.
Quick comparison
Say you want to plan a 5-day trip to Lisbon:
Plan a 5-day trip to Lisbon for 2 adults in October. Mid-range budget. Include must-see sights, food recommendations, and one day-trip out of the city.
- ChatGPT / Claude / Gemini will write a structured itinerary based on what they learned during training. Fast, well-written, may miss recent closures.
- Perplexity will search the web right now and cite current blogs/articles. Slower, but more up-to-date.
- Midjourney won't help here — wrong tool.
Which tool for which job?
- Writing emails, posts, summaries: ChatGPT or Claude.
- Quick web research with sources: Perplexity.
- Making images for slides or social posts: Midjourney, DALL·E (inside ChatGPT), or Canva AI.
- Improving something you've already written: the AI built into Google Docs, Notion, or Word.
- Long documents (contracts, reports, lecture notes): Claude tends to handle long text best.
- Anything Google-account related (your Gmail, your Docs): Gemini.
Try it yourself (10 minutes)
Open two different AI tools — say, ChatGPT and Perplexity. Paste the same question into both:
What are 3 popular gift ideas for someone turning 30 this year? Keep it under 200 words.
Compare the answers. Notice: ChatGPT writes from memory; Perplexity links sources. Both are correct uses — the difference is whether you want a guess or a researched answer.
Common beginner mistakes
- Sticking to one tool forever. A 5-minute test in a second tool often saves hours of frustration.
- Comparing tools on the wrong question. "Which is better?" is the wrong question. Ask "which is better for this job?"
- Paying too early. All major tools have free tiers. Use them for a month before deciding what (if anything) to pay for.
- Ignoring the AI inside apps you already pay for. Notion AI, Canva AI, and Microsoft Copilot may already be free in your plan.
Key takeaways
- AI tools fall into a few simple families: chat, search, image, video/voice, and in-app assistants.
- ChatGPT, Claude, and Gemini are the big three chat assistants — pick whichever feels nicest to talk to.
- Perplexity is the go-to when you want research with real sources.
- The right tool depends on the job — match it to the task, not the brand name.
- Start free, stay free for a while, then upgrade only the tools you genuinely use weekly.