What is better new IIT like Bhilai or NIT Raipur for CSE?

The IITs are a brand themselves. IITs like IIT Bombay, IIT Madras, IIT Kharagpur are getting ranked among the top institutes in the world, and that's a very big achievement for our country. Although IIT Bhilai is a newly formed IIT, it will make its way to one of the top institutes of our country. So if you are able to secure a seat at IIT Bhilai it is better to go for it rather than choosing NIT Raipur.

NIT Raipur is also a great institute with great faculty and good placement records over the years, but my suggestion is to go for IIT Bhilai. Students at IIT Bhilai are mentored by IIT Hyderabad which has a great reputation in terms of CSE Branch. 

The faculty of the CSE branch at IIT Hyderabad is great at their job and they mentor the students of IIT Bhilai. They also have their own faculty from top NITs which are better in the ranking than NIT Raipur. 

So it can be a safe decision to choose IIT Bhilai for the CSE branch and as an IITian it will be also helpful in the future during placements or applying for a job at top companies.