Is Akbar the greatest Emperor India had in the last 1000 years?

Define “great”.

If by “great”, you are referring to the ability of a tyrant to deal fire and death, massacre entire nations, preach division and bigotry and racial hatred, champion religious discrimination and the denial of the Other, then the answer is obvious.

Glory to His Majesty the Emperor of India, King George V of the United Kingdom and the British Dominions.

Otherwise I suppose it'd be a contest between the Emperors Krishnadeva Raya and Rajendra I Chola. I'm not including the likes of Rajaram II Bhonsle or Kapilendradeva Routray since they never claimed to be Emperors even though they were the paramount Powers of their time.

Edit: I messed up big time.

The unquestioned GOAT of Bharata Emperors in the last millennium is Raja Bhoja of the Parmara family, icon for Hindu Lords for centuries and the ideal for an Arya- skilled in mind, spirit, and arms- in this sorrowful darkling age.

I'd thought that he was a 10th Century figure so hadn't considered him at first, but he's actually from the early 11th Century. Thanks to Hamvira Mahapatra for pointing out my mistakes.