The cut offs and reservation keeps on changing, it is suggested you go on the below mentioned link to dig the useful information from IIT Guwahati website regarding the same for the year you want to apply in:

https://www.iitg.ac.in/

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Hello aspirant,

Hope you doing great

IIIT Guwahati

Total seats for CSE branch-115

Total seats for ECE branch-85

Total seats for st category for both branches -18

For more information about cutoff click below link

https://www.careers360.com/university/indian-institute-of-information-technology-guwahati/cut-off

Hope this helps you