The most respected academic editions of the original Sanskrit text include: V. Bhattacharya Edition (1960) : A comprehensive bilingual Sanskrit and Tibetan version published by The Asiatic Society in Calcutta. P.L. Vaidya Edition (1960) : Features the Sanskrit text along with the Panjika commentary
If you download the PDF of this edition (often scanned from The Asiatic Society archives), here is what you can expect: bodhicaryavatara sanskrit pdf top