Quick Answer
Pick The Odin Project if you want to build full-stack web apps for free and you are willing to push through a demanding, self-directed path. Pick Boot.dev if you are set on backend engineering, want computer science depth (algorithms, data structures) woven in, and can pay for a guided path. These two are not really head to head: The Odin Project is a free full-stack web curriculum, Boot.dev is a paid backend and CS track built mostly around Go and Python. If money is the deciding factor, The Odin Project wins because it costs nothing. If you already know you want backend and value structure, Boot.dev is worth the subscription. Plenty of people use both.
What each platform actually is
Curriculum depth and coverage
Free vs paid: the real cost
Community and support
Who should pick which
The verdict
FAQ