The Numbers Are In: A Deep Dive into GSoC 2025 Stats
Google Summer of Code (GSoC) is an online global program that introduces students and beginner developers to open source software development. For our 21st year of the program we welcomed 1280 Contributors from 68 countries who are coding for 185 Mentoring Organizations.
With the coding period starting June 2nd, GSoC contributors are focused on their 2025 projects alongside their Mentors and the thriving open source communities they are working with. We are excited to share some statistics about the accepted contributors in this year's program.
Accepted GSoC Contributors
- 92.32% are participating in their first GSoC
- 43.04% had not contributed to open source before GSoC 2025
- 89.02% are enrolled in an academic program
Projects
- 53.68% of projects were large (~350 hours), 41.54% medium (~175 hours), 4% (~90 hour) projects
- Currently, 77.9% of projects are the standard 12 weeks in length, with 18.3% extending their projects between 14-22 weeks.
We got a whopping 15,240 applicants submitting proposals (an increase of 130% of our previous high - a new record!) from 130 countries. These folks submitted 23,559 proposals, a 159% increase over last year!
96.55% applied to GSoC for the first time in 2025
RegistrationsWe had a record 98,698 people registering from 172 countries for the 2025 program, an increase of 124.4% over the previous high.
Mentors
This summer, 185 open-source organizations are participating in GSoC. Their projects are supported by over 2,100 mentors from 75 countries. These dedicated volunteers guide new contributors, helping them hone their skills.
Many of these mentors are highly experienced. Almost two-thirds have mentored GSoC contributors for four or more years.
A big thank you for being part of this wonderful community and for helping to spread the word about GSoC, which offers an invaluable opportunity for all the individuals beginning their journey in Open Source. We'll keep you updated with future entries about GSoC 2025, stay tuned!
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