What if any are the differences between the Vedic language (of Sanskrit?) and classical Sanskrit of later times?
Vedic Sanskrit is pre-Paaninian while classical Sanskrit [every other Sanskrit composition except the Vedas] is post-Paaninian. The Ashthadhyaayi of Paanini standardized Sanskrit grammar getting rid of many archaic Vedic forms. Paanini is accepted by scholars of Sanskrit as the greatest, and perhaps, the first Grammarian who exhaustively codified and standardized the Sanskrit language and grammar.
