Comprehensible input in English

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The number on each thumbnail is its difficulty score out of 100: mostly speaking pace, partly vocabulary load. How it is measured →

91/10012:46iOS 18 Hands-On: Top 5 Features!B2-C2 · ~10,000 words · very fastMarques Brownlee91/10033:51But what is cross-entropy? | Compression is Intelligence Part 2B2-C2 · ~9,000 words · very fast3Blue1Brown91/10028:33But why would light "slow down"? | Visualizing Feynman's lecture on the refractive indexB2-C2 · ~9,000 words · very fast3Blue1Brown91/10013:10What's on my Phone 2026!B2-C2 · ~7,000 words · very fastMarques Brownlee91/1008:56Exponential growth and epidemicsB2-C2 · ~8,000 words · very fast3Blue1Brown91/10023:01But what is a convolution?B2-C2 · ~9,000 words · very fast3Blue1Brown91/10027:36Beyond the Mandelbrot set, an intro to holomorphic dynamicsB2-C2 · ~9,000 words · very fast3Blue1Brown91/10015:16The Absurd Logistics of Concert ToursB2-C2 · ~7,000 words · very fastWendover Productions91/10036:54But what is quantum computing? (Grover's Algorithm)B2-C2 · ~9,000 words · very fast3Blue1Brown91/10020:44Vortex Cannon vs DroneB2-C2 · ~6,000 words · very fastMark Rober91/10017:57Why Fuel Injectors are AWESOME (28,000 fps Slow Mo) Part 1 - Smarter Every Day 281B2-C2 · ~7,000 words · very fastSmarterEveryDay91/10015:57The Most Interesting Displays In The World!B2-C2 · ~7,000 words · very fastMarques Brownlee91/10044:59The News You Missed in 2021, From Every Country in the World (Part 2)C1-C2 · ~12,000 words · very fastWendover Productions91/10052:11Exploration & Epiphany | Guest video by Paul DancstepB2-C2 · ~8,000 words · very fast3Blue1Brown91/10010:31A Scientist’s Guide to Wrinkle-Free ClothesB2-C2 · ~8,000 words · very fastSciShow91/10012:48Framework 13 Pro: The Modular Laptop is Real!B2-C2 · ~8,000 words · very fastMarques Brownlee91/10029:38Historian Answers Cold War Questions | Tech Support | WIREDB2-C2 · ~7,000 words · very fastWIRED91/10016:50Hamming codes part 2: The one-line implementationB2-C2 · ~8,000 words · very fast3Blue1Brown91/10034:35Olympiad level counting (Generating functions)B2-C2 · ~8,000 words · very fast3Blue1Brown91/10017:01What makes a great math explanation? | SoME2 resultsB2-C2 · ~9,000 words · very fast3Blue1Brown91/10013:15A pretty reason why Gaussian + Gaussian = GaussianB2-C2 · ~10,000 words · very fast3Blue1Brown91/10010:47So This is Peak FoldableB2-C2 · ~9,000 words · very fastMarques Brownlee91/10034:40But what is a Laplace Transform?B2-C2 · ~10,000 words · very fast3Blue1Brown91/10011:36Top 5 Android 16 Features: Big Visuals!B2-C2 · ~8,000 words · very fastMarques Brownlee

Which English channel to start with

Ranked by median difficulty, easiest first. The bar is a range, not a label — a channel typically spans a wide stretch of the scale, so one level would be false for its own hardest videos.

6 of these 7 channels carry the same vocabulary band (B1-B2), and their scores still run from 0 to 88. That gap is pace: what separates the easiest of these channels from the hardest is how fast people talk, not which words they use. How that is measured →