MLH Fellowship - Software Engineering Track vs Regeneron ISEF 2026
Comparing two highly competitive STEM opportunities. MLH Fellowship - Software Engineering Track is a internship while Regeneron ISEF 2026 is a competition.
| MLH Fellowship - Software Engineering Track | Regeneron ISEF 2026 | |
|---|---|---|
| Prestige Tier | Tier 2 — Highly Competitive | Tier 1 — Elite |
| Type | Internship | Competition |
| Organization | Major League Hacking (MLH) | Regeneron |
| Acceptance Rate | Highly competitive (exact rate not disclosed); MLH notes 'overwhelming demand from students' and significantly more applicants than available projects | Roughly 1,700 finalists are selected from 365 affiliated fairs worldwide. Getting to ISEF requires first winning regionally, which itself is competitive. Estimated <1% of all science fair participants globally reach ISEF. At the ISEF itself, approximately 600 of the 1,700 finalists (~35%) receive some award. |
| Applicants | Not officially published; described as receiving 'overwhelming demand' suggesting hundreds to thousands annually | Millions of students compete in science fairs globally each year; approximately 1,700–1,800 reach ISEF as finalists |
| Deadline | Rolling | — |
| 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 | Grades 9–12 (high school students only; middle schoolers compete in the separate Junior Innovators Challenge) |
| 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; ... | ISEF finalist status is one of the most powerful extracurricular credentials in college admissions. Being named an ISEF finalist (simply qualifying) is Tier 1 on most admissions frameworks. Grand Awar... |