LESSON NOTES · レッスンノート

N3How you sound · Sep 28, 2026

コスパ vs タイパ: "cost performance" and "time performance" in Japanese

コスパ (kosupa) means "cost performance" — how much value you get for your money — and タイパ (taipa) means "time performance," how much value you get for your time. Both are clipped from English loanwords, and both describe judging whether something is worth what you put into it, just measured in different currencies: money for コスパ, minutes for タイパ.

Learners who know コスパ from restaurant reviews are often surprised to meet its newer sibling タイパ, which took the exact same "performance per unit" logic and pointed it at time instead of money — a shift that says a lot about how younger Japanese speakers now talk about spending their day.

The basics

コスパ: getting your money's worth

コスパ is a clipping of コスト・パフォーマンス (cost performance), following the common clipping habit of keeping the first part of each word (コス + パ, three beats). It's used constantly to judge whether something — a meal, a product, a subscription — delivers enough value for its price.

このランチ、めっちゃコスパいいね。 — This lunch has really good value for money. (casual, common restaurant talk) あのホテル、コスパ悪わるかった。 — That hotel wasn't worth the price. (casual, a mild complaint)

コスパがいい means "great value," and コスパが悪わるい means "not worth the price" — the phrase always frames money spent against what you got back for it.

タイパ: getting your time's worth

タイパ is the newer counterpart, clipped from タイム・パフォーマンス (time performance). Instead of asking "was this worth the money," タイパ asks "was this worth the time it took" — a question that has exploded in relevance as streaming, video content, and endless scrolling compete for the same limited hours in a day.

映画えいがを倍速ばいそくで見みるのはタイパがいいから。 — Watching movies at double speed is good time-performance. (casual, describing a common habit) このドラマ、長ながすぎてタイパ悪わるい。 — This drama is too long, bad time-performance. (casual, a complaint about pacing)

タイパがいい/悪わるい works exactly like コスパがいい/悪わるい, just with minutes standing in for yen. The textbook near-equivalent of タイパがいい is 効率こうりつがいい, and efficient in Japanese pairs it with 時間じかんを効率こうりつよく使つかいたい, "I want to use my time efficiently."

Beyond the basics

Why タイパ became such a big word so fast

タイパ was named one of Japan's buzzwords of the year not long after it started spreading, and its rise tracks a real shift: with unlimited streaming and social media, the scarce resource stopped being money for many people and became attention and time instead. Practices like 倍速ばいそく視聴しちょう (baisoku shichou, watching at 1.5x or 2x speed) and reading a plot summary before deciding whether to commit to a full show — sometimes running straight into spoilers, the subject of ネタバレ (spoilers) in Japanese — are both direct expressions of maximizing タイパ.

ネタバレサイトで結末けつまつだけ先さきに見みた。タイパ重視じゅうしだから。 — I checked the ending on a spoiler site first. I care about time-performance. (casual, explaining a habit)

Using コスパ and タイパ together

The two words combine naturally when something scores well on both counts — cheap and quick.

このアプリ、コスパもタイパも最強さいきょう。 — This app is unbeatable on both cost and time performance. (casual, enthusiastic praise)

Because both follow the identical "X performance" pattern, Japanese speakers have started coining similar words on the same template for other resources, though コスパ and タイパ remain by far the two most established and widely understood.

タイパ vs 時短じたん: performance vs pure time-saving

時短じたん (jitan, "time-shortening") is an older, more neutral word for literally cutting the time something takes — a shorter commute, a faster recipe, a quicker meeting. タイパ is broader and more evaluative: it's not just "this took less time," but "this was worth the time it took," which can include decisions to skip content entirely rather than speed it up.

時短じたんレシピで15分ふんで作つくった。 — I made it in 15 minutes with a time-saving recipe. (neutral-casual, about efficiency) 見みる価値かちないと思おもってタイパ重視じゅうしでやめた。 — I decided it wasn't worth watching and dropped it, time-performance first. (casual, a value judgment)

時短じたん describes a method; タイパ describes a verdict on whether the whole thing was worth doing.

Where these words fit in Japanese loanword patterns

Both コスパ and タイパ follow the same abbreviation logic covered in 和製わせい英語えいごの罠わな — take two English words, keep the front of each, and glue them together (コス+パ, タイ+パ). They run three beats, not four, which is a reminder that the four-beat pattern is a tendency, not a law. They are two of the clearest, most productive examples still actively generating new words in casual Japanese today.

The pushback against タイパ

Not everyone treats タイパ as an unqualified virtue. A common criticism, aired constantly in essays and talk shows, is that optimizing too hard for タイパ strips away exactly the parts of an experience — a slow scene, a quiet moment, a detour — that were the actual point, leaving only the plot points behind.

タイパばかり気きにすると、大事だいじな部分ぶぶんを見逃みのがす。 — If you obsess over time-performance, you miss the parts that actually mattered. (casual-neutral, a common criticism)

This tension — between squeezing more value out of every minute and simply letting an experience take the time it takes — is part of why タイパ shows up so often in debates about culture and attention spans, not just as a neutral efficiency term.

Common mistakes

  • Confusing コスパ with 効率こうりつ (efficiency). 効率こうりつ is a broader, more formal word for efficiency in general; コスパ specifically compares cost against value received.
  • Assuming タイパ is only about watching videos faster. It covers any decision weighing time spent against value gained, including skipping something entirely.
  • Using コスパ/タイパ only in casual speech. Both have become common enough in business and marketing Japanese that they show up in genuinely professional contexts now, not just among teenagers.
  • Mixing up which word measures what. コスパ is always about money; タイパ is always about time. They don't swap roles.

コスパ vs タイパ vs 時短じたん vs 効率こうりつ

Word What it measures Typical use
コスパ Value received for money spent Meals, products, subscriptions
タイパ Value received for time spent Videos, shows, daily habits
時短じたん Literally shortening the time something takes Recipes, commutes, meetings
効率こうりつ General efficiency (broader, more formal) Work processes, systems

FAQ

Is タイパ a new word? Relatively — it spread quickly and became one of Japan's buzzwords of the year, arriving well after コスパ, which has been common for decades.

Can コスパ or タイパ be used in business Japanese? Yes, both have moved well beyond casual speech and appear regularly in marketing and everyday business conversation.

Does タイパ literally mean spending less time on everything? Not exactly — it means judging whether something was worth the time spent, which sometimes means skipping it entirely rather than simply doing it faster.

Is watching anime at double speed considered good or bad タイパ? It's generally framed as good タイパ by the people who do it, though it's also a common subject of debate about whether speed costs you the experience.

What's the difference between タイパ and 時短じたん? 時短じたん is a neutral description of a method that saves time; タイパ is a value judgment about whether the whole activity was worth its time cost.

Practice

1. "This lunch has really good value for money."

Show answer

このランチ、めっちゃコスパいいね。 — コスパがいい frames the meal's value against its price.

2. "That hotel wasn't worth the price."

Show answer

あのホテル、コスパ悪わるかった。 — コスパが悪わるい is the direct opposite, "not worth it."

3. "Watching movies at double speed is good time-performance."

Show answer

映画えいがを倍速ばいそくで見みるのはタイパがいいから。 — タイパがいい mirrors コスパがいい, but for time instead of money.

4. "This drama is too long, bad time-performance."

Show answer

このドラマ、長ながすぎてタイパ悪わるい。 — A common complaint about pacing, framed entirely in terms of time value.

5. "This app is unbeatable on both cost and time performance."

Show answer

このアプリ、コスパもタイパも最強さいきょう。 — The two words combine naturally when something wins on both fronts.

6. "I made it in 15 minutes with a time-saving recipe." (using 時短じたん, not タイパ)

Show answer

時短じたんレシピで15分ふんで作つくった。 — 時短じたん describes the method itself, not a verdict on whether it was worth it.

7. What's the key difference between タイパ and 時短じたん?

Show answer

時短じたん describes a method that saves time; タイパ judges whether the time spent was worth it. — One is descriptive, the other evaluative.

8. Fix this: このシステム、コスパがいい。(should describe general efficiency, not cost-vs-price)

Show answer

このシステム、効率こうりつがいい。 — 効率こうりつ is the broader, more formal word for efficiency in general.

9. "I checked the ending on a spoiler site first. I care about time-performance."

Show answer

ネタバレサイトで結末けつまつだけ先さきに見みた。タイパ重視じゅうしだから。 — Prioritizing タイパ can mean skipping straight to spoilers.

10. True or false: コスパ can be used to describe how much time something takes.

Show answer

False. — コスパ is always about money; タイパ is the word for time.

Judge a lunch, a train and a streaming show by コスパ and タイパ in a trial lesson and defend your choice.

Vocabulary from this article

Tap the block to select all of it, then copy. In Anki: File → Import, note type Basic, separator Tab — the first column becomes the front, the second the back.

コスパ	こすぱ — cost performance, value for money
タイパ	タイパ — time performance, value for time
時短	じたん — time-saving (of a method)
効率	こうりつ — efficiency (general, formal)
倍速	ばいそく — double speed (playback)
重視	じゅうし — placing importance on, prioritizing
価値	かち — value, worth
最強	さいきょう — the strongest, unbeatable
結末	けつまつ — an ending, a conclusion
レシピ	レシピ — a recipe

I'm Yuuki, a Japanese teacher based in Tokyo. I've taught on italki as a Top 1% teacher and watched over 1,500 anime, and I've noticed my own students debating コスパ and タイパ about their study methods just as often as about lunch or Netflix.

Book a trial lesson · $13

Sources: the author's own lessons and standard reference grammars.

More drills like the ones above, plus a timed JLPT-style mock test: Practice · N3 · Read something at this level: JLPT N3 stories with audio

More “How You Sound” articles →

Want to try this in a real conversation?

30-minute trial lesson, $13. Times shown in your own timezone.

Practice it out loud with a Tokyo native. ★5.0 from 358 italki reviews.

See how the lessons work →

Book a trial lesson · $13