Is baritone sax the same as an alto sax?

No, baritone sax is not the same as an alto sax. They are both saxophones, but they are different sizes and have different ranges. The baritone sax is the second-largest saxophone, after the bass saxophone, and it is pitched in Eb, whereas the alto sax is the third-smallest saxophone and is pitched in Eb one octave above the baritone. The baritone sax has a lower, richer sound than the alto sax, which has a higher, brighter sound.