Saiki K IQ: How Smart Is Kusuo Saiki?
The Saiki K IQ question has a twist: Kusuo Saiki is so overpowered that he chooses to look average. He hides his psychic powers and keeps his grades middle-of-the-pack on purpose, so his test results tell you nothing about his real brain. The certified genius in the family is his older brother Kusuke. Kusuo's real intelligence shows in how cleverly he dodges attention, not in a number.
Saiki can read minds, but you can't read your own score that easily. IQ Tester shows you which reasoning skills are holding you back, no telepathy needed: Find my weak spots.
Saiki's IQ: powers vs brains
The Disastrous Life of Saiki K. follows Kusuo Saiki, a high schooler with basically every psychic power: telepathy, telekinesis, teleportation, clairvoyance, X-ray vision, petrification and more. His one goal is to live a quiet, normal life. Everyone around him makes that impossible.
How smart is Saiki K, really?
Here's the thing people miss when they ask "is Saiki K smart?" He doesn't need to be. He can hear everyone's thoughts, so finding the right answer is never his problem. On paper his grades look like any average student's.
What actually shows his intelligence:
- Planning. He sets up elaborate schemes so nobody notices his powers.
- Reading situations. Telepathy gives him the data, but he still has to choose the right move.
- Deadpan problem-solving. Most episodes are Saiki solving a social disaster in the most efficient (and lazy) way possible.
So any Saiki IQ level you see online is a guess. A fair take: sharp, analytical and very strategic, wrapped in a guy who mostly wants coffee jelly.
The average-grades flex
Deliberately scoring average is honestly harder than it sounds. To land exactly in the middle every time, you'd need to know the right answers and the class average. It's the ultimate low-key flex.
Kusuke Saiki: the actual genius
If you searched "saiki k brother iq" or "kusuke saiki iq," here's your answer: Kusuke is the family's official genius. He's an inventor who studied abroad in England, and he spends a lot of the show trying to beat his little brother.
- He builds the limiters Kusuo wears on his head to keep his powers in check.
- He invents gadgets constantly, from robots to mind-related devices.
- He's obsessed with beating Kusuo, and he keeps losing, because raw brains can't match a psychic.
Fans often quote a very high number for Kusuke's IQ, way above normal test range. Whatever the figure, the show treats him as a top-tier genius whose ego is just as big.
Saiki vs Kusuke: who's smarter?
- On paper: Kusuke. He's the certified genius with the inventions.
- In practice: Kusuo wins almost every sibling showdown, because his powers make the competition unfair.
It's a classic sibling rivalry. One kid is "the smart one," the other is "the one who wins anyway."
Nendou and the gag characters
The side cast is where Saiki K gets its best jokes.
Nendou Riki IQ
Nendou is the friendly, buzz-cut "best friend" who's so empty-headed that Saiki can't read his thoughts at all. There's nothing to read. A Nendou Saiki K IQ number isn't really the point; the joke is that his mind is a blank channel.
Kaido Shun
Kaido is a chuunibyou, which is Japanese slang for a teen who acts like they have secret powers and a dark destiny. Imagine the kid in your class who's convinced he's the main character. That's Kaido, and he's adorable about it.
Teruhashi Kokomi
Teruhashi is the "perfect" girl who's used to everyone falling for her. Her brain is tuned to social strategy, and Saiki's indifference drives her up the wall.
| Character | Kind of smart | Comedy role |
|---|---|---|
| Kusuo Saiki | Strategic, analytical | Tired overpowered hero |
| Kusuke Saiki | Inventor genius | Jealous older brother |
| Teruhashi | Social strategy | "Why don't you like me?" |
| Kaido | Imaginative | Chuunibyou main-character energy |
| Nendou | Vibes only | Unreadable mind |
Telepathy is not intelligence
Here's the big idea behind any Saiki K IQ debate: having the answers isn't the same as working them out.
- Telepathy = access to information. It's like having the answer key.
- Intelligence = processing information. It's working out the answer yourself.
Real-world version: using ChatGPT to finish homework gets the answer onto the page, but it doesn't train your brain to get there. When you sit the actual exam (finals in the US, mocks or GCSEs in the UK), only the second kind counts.
This is the hard part about judging your own smarts: when you're surrounded by shortcuts (search, AI, group-chat answers), it's tough to know what you can do on your own. IQ Tester strips that away with 20 questions you solve yourself, then shows your result category by category: Find my weak spots
Saiki vs other anime geniuses
How does Saiki compare to anime's famous brains?
- Light Yagami and L win on pure deduction, with no powers involved. See our comparison of Near, L and Light.
- Makise Kurisu is a real-science genius who published in a top journal at 17. Read Makise Kurisu's IQ.
- Goku is a "low IQ, high battle IQ" case, the opposite of Saiki. Check out Goku's IQ.
Saiki is unique: the show never really tests his brain because his powers do the heavy lifting. That makes him funny, and impossible to rank honestly.
Real reasoning vs superpowers: test your own Saiki K IQ
You don't get psychic powers in real life. You do get skills you can sharpen:
- Pattern spotting. Number series and visual patterns train you to see rules quickly.
- Logic. "If this, then that" chains, like working out who said what in a group chat drama.
- Verbal analogy. "Saiki is to powers as Kusuke is to ___" (answer: inventions).
- Focus. No telepathy means you have to actually pay attention.
A Saiki-approved, low-effort routine
- One short drill a day. Minimal effort, maximum results; Saiki would approve.
- Target your weakest skill, not your favorite one.
- Do it at the same time daily, like after dinner or on the bus.
See your real brain, no powers required
IQ Tester is 20 untimed questions covering number series, verbal analogy, logic and pattern. Sign in with Google or Apple, no password, and you'll get your score band and three of your four category strengths free. Then follow the guides' weak-spot check and do one short drill a day. It's for fun, not a clinical test.
FAQ
What is Saiki K's IQ?
The show doesn't give Kusuo Saiki an official IQ. He keeps his grades average on purpose to hide his powers, so his school results don't reveal his real intelligence. Fans see him as highly strategic.
Is Saiki K's brother smarter than him?
Kusuke is the certified genius and inventor of the family, so on paper he's smarter. In practice, Kusuo beats him in nearly every rivalry thanks to his psychic powers.
What is Kusuke Saiki's IQ?
Fans quote a number well above normal test range for Kusuke. The show clearly presents him as a top-tier genius inventor, but treat exact figures you see online carefully.
Why can't Saiki read Nendou's mind?
It's one of the show's best jokes: Nendou thinks about so little that there's nothing for Saiki to read. His mind basically shows a blank screen.
Can I take a Saiki K IQ test?
"Which Saiki K character are you" quizzes are just for fun. For an actual look at your reasoning, IQ Tester gives you 20 questions and a breakdown by number series, analogy, logic and pattern.