From CS50’s entire team, happy holidays! 🎄We'll be back in 2025 with a new-and-improved CS50x, new opportunities to engage, updates to past courses, and some brand-new ones as well. There will also be a few surprises along the way! 🤫

This is CS50x 2025, now available for free at cs50.edx.org and youtube.com/cs50 as well as on Apple TV and Google TV. This year’s release includes new-and-improved lectures and problem sets, fun on-stage demos, and also more in-depth coverage of the more complex topics. Welcome aboard!💡

Check out the interviews with Harvard students about their final CS50 projects — which one’s your favorite? 🧐

YouTube

And here are the interviews with Yale students about their final CS50 projects, ranging from a hack-and-slash video game to a task manager, as well as much more… Get inspired to make your own! ✨

YouTube

Q: What’s the difference between CS50 Certificates and edX’s Verified Certificates?
A: An edX verified certificate “can provide proof for an employer, school, or other institution that you have successfully completed an online course.” A CS50 Certificate is a free certificate from CS50 itself.

#FAQ50

Rubber snow ducks in the wild. ❄️🦆

 If Bluesky is your platform of choice, good news! 🩵 You can now join CS50 at @cs50.harvard.edu.