What is the average GPA of students accepted in MIT Stanford Berkeley Carnegie Mellon for undergraduate studies?

There's no publicly released, single average GPA for students accepted to MIT, Stanford, Berkeley, and Carnegie Mellon. These universities don't publish this data in a way that allows for a simple average calculation across all four institutions.

However, we can say with certainty that the average GPA is exceptionally high, well above a 4.0 on a standard 4.0 scale (many applicants have weighted GPAs that exceed 4.0). We're talking about a GPA in the high 3.8 to 4.0+ range (weighted) or very high 3.9 to 4.0 (unweighted) for the admitted students. Even this is a generalization, as the actual average would likely be slightly higher due to the intensely competitive nature of admissions. Keep in mind that GPA is just one factor; standardized test scores, extracurricular activities, essays, and letters of recommendation all play crucial roles in the admissions process.