MLH Fellowship - Software Engineering Track vs Regeneron ISEF Awards

Comparing two highly competitive STEM opportunities. MLH Fellowship - Software Engineering Track is a internship while Regeneron ISEF Awards is a competition.

MLH Fellowship - Software Engineering Track Regeneron ISEF Awards
Prestige Tier Tier 2 — Highly Competitive Tier 2 — Highly Competitive
Type Internship Competition
Organization Major League Hacking (MLH) Society for Science
Acceptance Rate Highly competitive (exact rate not disclosed); MLH notes 'overwhelming demand from students' and significantly more applicants than available projects Approximately 1,600-1,700 finalists compete at ISEF annually out of significantly larger pool competing at 365+ affiliated fairs; roughly 600 finalists receive awards/prizes (37.5% of finalists awarded)
Applicants Not officially published; described as receiving 'overwhelming demand' suggesting hundreds to thousands annually Over 1,600 finalists selected annually from 365 Society-affiliated fairs across 60+ countries and territories; total number competing at all affiliated fairs globally is much larger (tens of thousands)
Deadline Rolling
Award $7,000,000
Cost to Apply Free Free
US Only No / International No / International
Grades Open to high school students and early-career developers; no specific grade level restriction mentioned, but intermediate to advanced coding proficiency required 9th through 12th grade (high school students)
College Impact Strong positive impact on college applications and career prospects: 1) Demonstrates real-world professional experience (not just school projects or tutoring), which top colleges value significantly; ... Reaching Regeneron ISEF as a finalist is extremely prestigious in college admissions and carries significant weight. Top colleges (Ivy League, Stanford, MIT, etc.) view ISEF participation highly favor...