Per Wikipedia. Umesh: Apparently, nobody has original text. What we have is the revised edition. It was compiled by someone called Sakalya.
The major Rigvedic shakha ("branch", i. e. recension) that has survived is that of Śākalya. The surviving padapatha version of the Rigveda text is ascribed to Śākalya. The Śākala recension has 1,017 regular hymns, and an appendix of 11 vālakhilya hymns which are now customarily included in the 8th mandala (as 8.49–8.59), for a total of 1028 hymns. The Bāṣkala recension includes 8 of these vālakhilya hymns among its regular hymns, making a total of 1025 regular hymns for this śākhā. In addition, the Bāṣkala recension has its own appendix of 98 hymns, the Khilani.
In the 1877 edition of Aufrecht, the 1028 hymns of the Rigveda contain a total of 10,552 ṛcs, or 39,831 padas. The Shatapatha Brahmana gives the number of syllables to be 432,000, while the metrical text of van Nooten and Holland (1994) has a total of 395,563 syllables (or an average of 9.93 syllables per pada); counting the number of syllables is not straightforward because of issues with sandhi and the post-Rigvedic pronunciation of syllables like súvar as svàr.
Another shakha that may have survived is the Bāṣkala, although this is uncertain.