Hi Voleti,

Lets Begin by comparing the sponsored and non sponsored MTech

• The standard M.Tech. programme lasts two years. While sponsored M.Tech. courses are divided into two categories: I full-time M.Tech. programmes lasting two years; and (ii) part-time M.Tech. programmes lasting two years. (ii) A three-year part-time M.Tech. programme is available.
• As candidates enrol in courses through GATE, sponsored candidates do not receive any financial benefits. The complete cost of such candidates' study is covered by the sponsoring corporation.
• Candidates with two years of relevant work experience who are sponsored by their employer or self are excused from the requirement of a GATE score. Teaching/Research Assistantships are not available to them.
• Sponsored candidates who have been shortlisted are chosen through a written test and/or an interview.

Eligibility

• Candidates must have a bachelor's degree in Engineering, Technology, or Architecture, or an equivalent degree, with a cumulative grade point average of at least 60% over four years.
• For candidates who fall into the ST/SC category, a minimum of 55 percent is required.
• Candidates must have two years of professional experience in the sponsoring institute after completing their qualifying degree as of April 30, 2022.

How to Apply

The only difference is the link you use to apply for MTech at any given IIT, which is the same as applying for a sponsored one. For instance, at IIT Hyderabad, they have separate URLs for sponsored and non-supported students.

Hope that answers your question