CS50

@cs50 • 152,115 subscribers

From the team that brought you CS50 at Harvard, this is the Fifty Foundation. Theatrical courses in computer science and math. For free, for all. 🎭

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What lets C, Rust, and other languages achieve higher speeds than Python? @CS50’s own Brian Yu explains.

What lets C, Rust, and other languages achieve higher speeds than Python? @CS50’s own Brian Yu explains.

25,028 views • 1 month ago

Harvard Computer Science course is available to everyone online — search for CS50 on YouTube or sign up for free at

Harvard Computer Science course is available to everyone online — search for CS50 on YouTube or sign up for free at

483,447 views • 3 years ago

Ever wondered what P and NP problems are? CS50’s own Brian Yu is here to explain.

Ever wondered what P and NP problems are? CS50’s own Brian Yu is here to explain.

20,100 views • 1 month ago

Is learning to code still important? @CS50’s own Colton Ogden weighs in.

Is learning to code still important? @CS50’s own Colton Ogden weighs in.

18,269 views • 1 month ago

Learn a tip by @CS50’s own Carter Zenke on making sure your foundational skills are covered even when AI can do all the work for you.

Learn a tip by @CS50’s own Carter Zenke on making sure your foundational skills are covered even when AI can do all the work for you.

11,149 views • 1 month ago

On January 1, 2026, we’re launching the new-and-improved version of CS50x on and @CS50’s YouTube. A little sneak peek below!

On January 1, 2026, we’re launching the new-and-improved version of CS50x on and @CS50’s YouTube. A little sneak peek below!

23,242 views • 8 months ago

This is CS50x 2026 with David J. Malan, CS50's (free) introduction to the intellectual enterprises of computer science and the art of programming, now with artificial intelligence (AI). 🦆 Full season available on edX on January 1, 2026. Register at #education #community #stranger #things

This is CS50x 2026 with David J. Malan, CS50's (free) introduction to the intellectual enterprises of computer science and the art of programming, now with artificial intelligence (AI). 🦆 Full season available on edX on January 1, 2026. Register at #education #community #stranger #things

13,912 views • 8 months ago

Happy holidays from Professor David J. Malan and CS50’s whole team here in Cambridge. 🎁 Stay tuned for release of CS50x 2026 on January 1, 2026.

Happy holidays from Professor David J. Malan and CS50’s whole team here in Cambridge. 🎁 Stay tuned for release of CS50x 2026 on January 1, 2026.

10,815 views • 8 months ago

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! 🤫

18,908 views • 1 year ago

From Harvard University University in Cambridge, Massachusetts, this is CS50x 2025. Available on January 1, 2025, on YouTube, edX, Apple TV, Google TV, and beyond. Open to anyone online; no prior programming experience required. Enroll for free at And meet CS50’s #AI-powered duck of whom you can ask questions along the way, thanks to GitHub, OpenAI, and Microsoft! 🦆

From Harvard University University in Cambridge, Massachusetts, this is CS50x 2025. Available on January 1, 2025, on YouTube, edX, Apple TV, Google TV, and beyond. Open to anyone online; no prior programming experience required. Enroll for free at And meet CS50’s #AI-powered duck of whom you can ask questions along the way, thanks to GitHub, OpenAI, and Microsoft! 🦆

13,181 views • 1 year ago

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