In terms of placements, should I go for the IIIT in Allahabad or the VNIT for an MTech in CSE?

When speaking in terms of placement records, IIIT Allahabad is known only for B.Tech. However, M.Tech at the same institution tends to not get great offers. In fact, most companies do not permit M.Tech students from IIITA to sit for specific interviews. 

Companies like Microsoft, Amazon, Hashedin, Morgan Stanley didn’t allow M.Tech students to sit for the interviews one particular year. That is one reason behind why IIIT, Allahabad does not make the placement stats clearly open in a branch-specific manner.

You, as a student, should prefer M.Tech at NIT Nagpur. Mentioned below are the statistics of M.Tech placements of VNIT Nagpur. 

It is important to note that MTech IT (i.e., Intelligent Systems) is very well known at IIITA. If you are choosing to do Intelligent Systems at IIITA, then you will not regret that decision. You definitely will have the chance to sit for every company interview. However, if you do not get Intelligent Systems, then opting to go for NIT Nagpur is highly recommended.

In terms of placement, the preference order of branches are as briefed below:

Intelligent systems, IIITA> CSE, VNIT Nagpur> Advanced computing, NIT Bhopal> Information security, NIT Bhopal> Human-computer interaction, IIITA> Cyber Law IIITA> Software Engineering IIITA> Wireless communication IIITA.