Imagine you and your friends share a big notebook at the playground. 🧸 Every time someone trades a toy, you ALL write it down in your own notebook at the same time. "Sam gave Mia his red car!" Now, nobody can cheat! If sneaky Tommy tries to erase his page and say, "I never gave away my teddy," everyone else checks their notebooks and says, "Nope! We all wrote it down!" A regular database is like ONE notebook kept by the teacher. If the teacher loses it or scribbles in it, the truth is gone. A blockchain is like EVERYONE having a matching notebook. And once you write something, you glue that page shut forever. No erasing! Bitcoin uses this to track pretend coins. NFTs use it to track special digital stickers. **So basically...** blockchain is a notebook that everyone shares, so nobody can lie about who has what!
ChatGPT Prompts to Explain Anything Like You're 5
Tested prompts for chatgpt explain like i'm 5 prompt compared across 5 leading AI models.
BEST BY JUDGE SCORE
Claude Haiku 4.5
9/10
You're staring at a wall of jargon, a dense concept, or a topic that makes your eyes glaze over, and you want ChatGPT to break it down in plain language. The 'explain like I'm 5' prompt is one of the most reliable ways to do that. It forces the model to strip out assumptions, skip the technical vocabulary, and reach for analogies and simple cause-and-effect language instead.
The problem most people run into is that a vague prompt gets a vague answer. Typing 'explain blockchain like I'm 5' works okay, but it can still produce an output that's more 'explain like I'm a curious 12-year-old who reads a lot.' The specific phrasing, the topic framing, and any added constraints you give ChatGPT directly control how simple the output actually gets.
This page gives you the exact prompt structure that produces genuinely simple explanations, shows you what different AI models do with it, and walks through the scenarios where this approach saves time versus the ones where it falls flat. If you need to understand something fast, teach a concept to someone else, or sanity-check your own understanding, you're in the right place.
When to use this
This prompt format works best when you're hitting a comprehension wall on an unfamiliar topic and need a foothold before going deeper. It's also the right move when you're preparing to explain something to a non-expert audience, a client, a parent, or a new hire, and you want to pressure-test whether you actually understand it well enough to simplify it.
- Learning a new technical concept quickly before a meeting or interview
- Explaining a complex policy, legal clause, or medical term to a family member
- Onboarding someone with no background into a specialized field
- Checking your own understanding of something by seeing if a simple version makes sense
- Creating first-draft explainer content for a non-technical audience
When this format breaks down
- When precision is legally or medically required: a simplified explanation of a drug interaction or contract clause can omit details that actually matter and create real risk.
- When the audience already has domain expertise: asking ChatGPT to explain neural networks like you're 5 to a machine learning engineer wastes their time and yours.
- When the topic is emotionally sensitive or nuanced, such as grief, trauma, or complex ethical situations, because oversimplification can come across as dismissive or inaccurate.
- When you need citations or verifiable facts: the ELI5 format prioritizes clarity over precision and the model may smooth over contested or uncertain areas without flagging them.
The prompt we tested
You are a friendly teacher who explains complex topics to a 5-year-old child. Your job is to take the topic below and explain it in the simplest, most delightful way possible. Rules for your explanation: Use short sentences, tiny words, and at least one everyday analogy (toys, snacks, pets, playgrounds). Keep it under 150 words, avoid jargon completely, and end with a one-sentence 'So basically...' summary a child could repeat. Topic to explain: Can you explain how blockchain technology works? I keep hearing about it in the news with Bitcoin and NFTs, but I don't really understand what makes it different from a regular database. Now write your ELI5 explanation:
Model comparison
| Model | Quality | Cost | Latency | Tokens |
|---|---|---|---|---|
| Claude Opus 4.7 | 9 | $0.0258 | 8.7s | 238 / 297 |
| Claude Haiku 4.5 | 9 | $0.0012 | 4.6s | 168 / 205 |
| GPT-5.4 | 9 | $0.0031 | 5.6s | 147 / 185 |
| Gemini 2.5 Pro | 9 | $0.0010 | 8.9s | 150 / 163 |
| Grok 4.1 Fast Reasoning | 9 | $0.0001 | 7.5s | 297 / 113 |
Outputs
# Blockchain is Like a Magic Notebook! Imagine you and your friends share a notebook where you write down who gave toys to whom. Here's the special part: **Everyone gets the same copy.** When someone trades a toy, you all write it down together. Nobody can erase it or cheat because everyone sees it! A regular notebook? Just one person keeps it. They could secretly cross things out. Bad! With blockchain, it's like having 100 copies of the same notebook spread across the playground. If someone tries to fake a trade on *their* copy, everyone else's copies don't match. **Caught!** Each page (called a "block") links to the page before it—like a chain. That's why it's called "blockchain!" Bitcoin uses this so nobody can pretend they spent money twice. **So basically... blockchain is a notebook everyone owns together, so nobody can trick anyone!**
Think of a blockchain like a class sticker book that everyone in the class has a copy of. When something happens, like “Sam got 1 gold star,” that note is written on a new page. Before the page is added, lots of kids check that it is true. Then everyone glues in the same new page. Each new page also has a special clue from the page before it, like puzzle pieces that lock together. If someone tries to secretly change an old page, the clues stop matching, and everyone can see the cheating. A regular database is more like one teacher’s notebook. One person or company usually controls it and can change it. Blockchain is different because many people share it, check it together, and old pages are very hard to change. So basically, blockchain is a shared notebook with locked-together pages that lots of people watch so no one can sneakily change the story.
Hello there, little explorer! Imagine you and your friends are building with special toy blocks. Each time you trade a toy, you write it down on a new block. Then, you snap that new block onto the last one, making a big, long chain! Here's the magic part: *everyone* gets an exact copy of the same block chain. If someone tries to be sneaky and change a block in the middle, it won't match everyone else's chain. We would all know right away! It’s not like one person's secret diary; it's a storybook we all share and protect together. So basically, a blockchain is a super-strong chain of information that everyone shares and agrees on, so no one can secretly change it.
Hey sweetie! Imagine you and friends at the playground make a magic chain of blocks. Each block holds a fun note, like "I shared my cookie with Sally!" You snap it on—click!—and everyone copies the whole chain. No erasing! If someone tries, all friends yell, "Hey, that's not right!" A regular list is like Mommy's one notebook. She can scribble it out anytime. Blockchain is that playground chain for Bitcoin money or NFT toys—safe and shared! So basically, it's a unbreakable chain of notes everyone copies and checks.
What makes these work
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01Name the analogy style you want
Telling ChatGPT to use a story, a physical object, or a specific setting like a kitchen or a playground gives it a creative constraint that produces sharper analogies. Without this, the model defaults to generic comparisons that technically work but don't really stick. Try adding 'use an analogy involving everyday objects' or 'explain this as if you're telling a bedtime story.'
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02Specify your actual starting point
Adding one sentence about what you already know prevents the model from over-explaining things you're fine with and under-explaining the part that confused you. For example: 'I understand that the stock market exists but I don't understand what a derivative is.' That framing saves a lot of back-and-forth.
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03Set a length or sentence cap
ELI5 outputs drift longer when there's no constraint. Asking for 'five sentences or fewer' or 'under 100 words' forces the model to prioritize the core idea instead of hedging with qualifications. Shorter outputs are also easier to check for accuracy at a glance.
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04Ask for a one-line summary at the end
Adding 'end with one sentence that a 5-year-old could repeat back' gives you a litmus test for whether the explanation actually landed. If the summary sentence still sounds complicated, the explanation needs another pass. This is also useful if you're pulling the summary for a slide or a caption.
More example scenarios
#01 · Finance: explaining compound interest to a first-time investor
Input
Explain compound interest like I'm 5 years old. I've never invested money before and I keep hearing this term but the Wikipedia definition lost me. Use a simple story or analogy to make it stick.
Expected output
Imagine you have a magic jar that grows one extra marble every time you put marbles in. The more marbles you add, the more it grows. And here's the trick: the new marbles it makes also start making more marbles. So your jar keeps getting bigger faster and faster, even if you stop adding marbles yourself. That's compound interest. Your money makes more money, and then that new money makes even more money.
#02 · Healthcare: explaining what an MRI actually does
Input
Explain how an MRI machine works like I'm 5. I have to get one next week and I'm anxious because I don't understand what it's doing to my body. Keep it reassuring and simple.
Expected output
Your body is full of tiny, tiny bits called atoms, and they all spin like little tops. The MRI machine uses a big magnet to make all those tops spin the same direction, then sends a gentle radio wave to nudge them. When the nudge stops, the tops snap back and send a little signal. The machine listens to all those signals and draws a picture of what's inside you. No cutting, no radiation, just magnets and radio waves making a map.
#03 · Law: breaking down what a non-disclosure agreement is
Input
Explain what an NDA is like I'm 5. I just got sent one before a job interview and I want to understand what I'm agreeing to before I sign it.
Expected output
An NDA is a pinky promise, but written down and serious. The company is saying: we're going to tell you some secret things about how we work, but you have to promise not to tell anyone else. If you break the promise, you can get in legal trouble. It's not there to scare you. It just protects their private information while they figure out if they want to hire you.
#04 · Technology: explaining how large language models work
Input
Explain how ChatGPT and large language models work like I'm 5. I use the tool every day but have no idea what's happening under the hood. Avoid all technical jargon.
Expected output
Imagine you read every book, website, and article ever written. You did it so many times that you got really good at guessing what word comes next in any sentence. That's basically what ChatGPT did, except it's a computer. When you type something, it looks at your words and asks itself: what words would make the most sense to say back? It's not thinking like a person. It's doing very fast, very sophisticated guessing based on patterns it saw during all that reading.
#05 · Science: explaining climate change to use in a parent newsletter
Input
Explain climate change like I'm 5, in about 4-5 sentences. I'm writing a school newsletter for parents who aren't scientists and I want a clear, non-political starting point everyone can agree on.
Expected output
The Earth is wrapped in an invisible blanket of air called the atmosphere. It keeps the planet warm enough for us to live. When we burn things like gas and coal, we add extra layers to that blanket. The extra layers trap too much heat, like turning up a thermostat we can't easily turn back down. That extra warmth is what changes weather patterns, melts ice, and raises sea levels over time.
Common mistakes to avoid
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Using ELI5 as a replacement for source-checking
ChatGPT will produce a confident, clean simple explanation even when the underlying facts are contested or slightly wrong. Simplified language makes errors harder to spot, not easier. Always verify the core claims from the ELI5 output against a primary source before sharing it with others.
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Not specifying the topic tightly enough
Broad topics like 'explain the economy like I'm 5' produce outputs so general they're almost useless. Narrowing to a specific mechanism, like 'explain why raising interest rates slows inflation,' gives the model something concrete to work with and produces an explanation you can actually use.
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Accepting the first output without testing it
The first ELI5 response is often a first draft, not a final answer. If any sentence still requires prior knowledge to understand, ask ChatGPT to simplify that sentence specifically. Iterating on the weak spots takes about 30 seconds and usually produces a significantly better result.
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Forgetting to adjust for your actual audience
ELI5 is a spectrum. A 5-year-old explanation of quantum entanglement and a 5-year-old explanation suitable for a client presentation are very different outputs. If the content will go to a real audience, specify who they are so the model calibrates tone and assumed vocabulary correctly.
Related queries
Frequently asked questions
What's the exact ChatGPT prompt for 'explain like I'm 5'?
A reliable base prompt is: 'Explain [topic] like I'm 5 years old. Use a simple analogy and avoid any jargon.' From there you can add constraints like a word count, a specific analogy type, or a sentence about what you already know. The base phrase alone works but adding one or two details consistently produces better output.
Does 'explain like I'm 5' actually work better than just asking ChatGPT to simplify something?
In most cases, yes. 'Simplify this' leaves the model's target complexity level undefined, so it might drop from expert to intermediate rather than all the way to plain language. 'Explain like I'm 5' sets a much lower floor and pushes the model toward concrete analogies instead of just shorter sentences. The difference in output quality is usually noticeable.
Can I use this prompt for technical topics like coding or mathematics?
Yes, and it's especially useful there. For coding, try 'explain what a REST API is like I'm 5, using a restaurant as the analogy.' For math, asking for a physical or visual analogy works better than asking for a numerical one. The key is that ELI5 works on mechanisms and concepts, not on teaching you to actually do the math.
Is 'explain like I'm 5' the same as the Reddit ELI5 format?
It comes from the same place. The Reddit subreddit r/explainlikeimfive popularized the phrase, and ChatGPT was trained on enough internet text to understand the convention. The expected output is the same: plain language, concrete analogies, no assumed prior knowledge. Referencing the subreddit by name in your prompt won't improve results over just saying ELI5 or writing it out.
How do I make the ELI5 output accurate and not just oversimplified?
Ask for accuracy as an explicit requirement: 'Explain like I'm 5, but don't skip any detail that would make this technically wrong.' You can also ask the model to flag anything it had to simplify that might be misleading. Then cross-check the output against a reliable source, especially for medical, legal, or scientific topics where a missing nuance can matter.
Can this prompt work for explaining things to real children?
It can be a useful starting point, but 'like I'm 5' in a prompt is calibrated to an adult who wants zero assumed knowledge, not literally a five-year-old child. For actual children, add the child's age and context, for example: 'Explain this to a real 7-year-old who likes dinosaurs.' That adjustment shifts vocabulary, sentence length, and example types in a way that works better for a young audience.
Try it with a real tool
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