Yale, 3.7%.; MIT: 4.5%

https://yaledailynews.com/blog/2024/03/28/yale-admits-3-7-percent-of-applicants-lowest-acceptance-rate-ever/

https://toptieradmissions.com/mit-regular-decision-acceptance-rate/#:~:text=This%20year%2C%2028%2C232%20students%20applied,than%20last%20year's%204.8%25).