ChatGPT in 3 minutes

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You hear about ChatGPT everywhere... but you don't really know what it is?
In just a few minutes what it does, how it works and a practical example.

📌 What is ChatGPT?

  • A artificial intelligence tool developed by OpenAI

  • Understands and generates text in natural language (like a real conversation)

  • Can write, summarize, translate, analyze, explain...

  • Based on large quantities of data and your instructions

💡 Concrete use cases

  • 📄 Writing posts, emails, scripts, articles

  • 📊 Analyze data, documents, trends

  • 🎯 Brainstormer campaign ideas, product names

  • 🎓 Learn understanding a concept, creating a lesson plan

  • 🤖 Automate prepare messages, prompts, scripts

👉 In brief: a versatile assistant... as long as you know how to talk to it.

🔍 The different ChatGPT models

 

Model

Multimodality 

Complex reasoning

Image generation

Memory

Ideal for

GPT-5

Text, image, audio/voice, video (analysis) + code

⭐⭐⭐⭐✩

Yes

Long

Premium writing, strategic analysis, full-stack dev, reliable answers

GPT-5 mini

Same but lighter and faster

⭐⭐⭐✩✩

Yes

Long

Volume, fast pro chat, prototyping

GPT-5 nano

Ultra-compact, mobile/edge-optimized version

⭐⭐✩✩✩

Optional

Medium

Embedded integrations, simple wizards

GPT-5 pro (thinking)

Like GPT-5 but with extended reasoning and finer planning

⭐⭐⭐⭐⭐

Yes

Longer

Critical cases: audits, complex decisions, technical problems

o3 (reasoning)

Multimodal + code

⭐⭐⭐⭐⭐

Yes

Long

Thorny problems, data/vision, math, consulting

o4-mini (quick thinking)

Multimodal + code

⭐⭐⭐⭐✩

Yes

Long

High volume, demanding Q&A on a tight budget

GPT-4.5

Text + image + code

⭐⭐⭐⭐✩

Limited 

Long

Editing, general dev, correct reliability

GPT-4o

Text, image, audio/voice, vision + code

⭐⭐⭐⭐✩

Limited

Long

Multimodal real-time apps, translation, customer support

 

💡 Tip Choose the model that best suits your needs, not always the most powerful. You want the best overall, without the headaches? GPT-5. For serious cases : GPT-5 pro (thinking)

🛠 Customization & GPTs

  • Adapt ChatGPT to your tone, profession and preferences

  • Create your own Tailor-made GPTs who know your business, your files and your methods
    (Links to our tutorials in description)

💬 Concrete example

"Make me an outline for a 2-hour workshop on AI for beginner SME managers, with concrete examples."
➡️ Result: a clear, structured plan, with support, visuals and quizzes generated in seconds.

🚀 Now you know what ChatGPT is and how to use it today.
📺 Check out our other videos to learn how to personalize it, create your GPTs and talk to it like a pro.

 

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