When comparing KaiTi vs Hack Font, the Slant community recommends Hack Font for most people. In the question“What are the best programming fonts?” Hack Font is ranked 59th while KaiTi is ranked 97th.
Ranked in these QuestionsQuestion Ranking
Pro Very clear even at small sizes
This font is included in windows by default and is really easy to read at small sizes, allowing you to keep more code on the screen. It was originally designed for simplified Chinese.
Pro Pretty and easy on the eyes
Pro Good line height
Line height in Hack Font is comfortable to read yet small enough to fit many lines of code on a traditional screen.
Pro Characters are easy to distinguish
All characters read nicely ("0" and "O", "B" and "8", "1" and "l" - all the classics).
Con No differentiation between 0O and Il
Zero O and cap-I lower-l look the same
Con Some characters appear cramped when adjacent
Con Parentheses and brackets are sometimes hard to identify
At small fonts sizes especially, parentheses and brackets look very similar.
Con Poor visibility of zero character
The zero character looks like a blob at small font sizes.
Con Unclear lowercase "i"
The lowercase "i" sometimes looks like an open parenthesis,