One word = five characters, including spaces. It's the universal convention, so your score here compares directly to any other typing test.

Net WPM counts only what you got right; raw WPM counts everything. The gap is what mistakes cost you.

Backspaces are free — fixing a typo costs you the original slip, nothing more.

The opponent types at exactly the speed on the chip, in the same units you're scored in. Identical speeds finish in a dead heat.

Pick Your best to race your own personal best — the only opponent that gets harder as you improve.

Each typed Casper scenario is 2 questions in 3.5 minutes. Raters score what reaches the page — a great idea you didn't have time to write earns nothing.

Composing is slower than copy-typing: you're thinking and editing at once. We estimate it at 45% of your copy speed. A developed two-question answer runs about 125 words.

Treat it as a guide, not a guarantee — but the direction holds: faster typing raises your ceiling.