Tabs vs Spaces: The Holy War Decision Matrix
Should I use tabs or spaces for code indentation?
The debate that has divided developers since the dawn of programming. Let AI settle this once and for all. Just kidding, the war never ends.
Octo's answer
🏆 Top pick: Use spaces for indentation4.4/5
Spaces for indentation are portable across editors and can make alignment predictable, but consistency with a project’s formatter matters more than a universal rule. Tabs can work well when teams configure display width deliberately, and an IDE setting can enforce either convention. Follow the repository style guide and automate the choice with a formatter.
This is a close comparison: the top two scores are only 0.2 points apart. Your priorities may change the result.
How the options compare
- 14.4/5
Top pick
Use spaces for indentation
A good fit if: Utilize space characters for indentation levels in code
- 24.2/5
Use an IDE/editor setting
A good fit if: Configure your integrated development environment or text editor to handle indentation automatically
- 33.8/5
Follow team or project standards
A good fit if: Adhere to the indentation style already established by your team or project
- 43.2/5
Use tabs for indentation
A good fit if: Utilize the tab character for indentation levels in code
- 52.0/5
Mix tabs and spaces
A good fit if: Use tabs for indentation levels and spaces for alignment within lines
Criteria used in this analysis
- Readability · 20%
- Team Standards · 20%
- Editor/ide Support · 20%
- Version Control Compatibility · 20%
- Personal Preference · 20%
This general analysis was generated by Octo Thinks AI on July 20, 2026. Your weights and situation may change the result - run it yourself, free and without sign-up.