>> Lean 3 was the least bloated theorem prover among Lean, Coq and Agda, and Lean 4 is the most bloated among this Big Three. > Lean is far off the most bloate

>> Lean 3 was the least bloated theorem prover among Lean, Coq and Agda, and Lean 4 is the most bloated among this Big Three. > Lean is far off the most bloated one. Isabelle most likely takes that spot. Among these three is the operative phrase here. I hate to be pedantic, but we are talking about theorem provers here :)