In Q4 2025, Duolingo announced it would let go of $50M in bookings to reach 100 million daily active users (DAUs) by 2028; a strategy Class Central covered in detail last month.  2026 is its “investment year,” and Q1 was the first quarter of execution. So far, the plan seems to be working. The Expected Results: Low Bookings, High DAUs Duolingo is running multiple tests to improve the free experience: spoken tokens for speaking practice, Speaking Adventures for real-world conversations, and fla

OpenAI Academy is OpenAI’s newest attempt at organizing its growing library of tutorials, guides, and beginner-focused training resources. This platform offers a minimalist, ad-free learning experience where learners can watch short videos or read practical articles on how to use ChatGPT across different sectors. In this review, I take a closer look at the platform through the lens of one of its beginner courses: ChatGPT 101: Introduction to ChatGPT for Small Businesses. This 30-minute crash c

Learn ethical hacking, vulnerability assessment, and pen testing with Nmap, Nessus, and OpenVAS. Plus, master pentest reports and security audits with top courses.

Free medical education from renowned organizations including the Cleveland Clinic, MD Anderson, and Medscape.

Google offers many online courses with free certificates and badges. We’ve put together a full list.

The future of Coursera’s only credible alternative for universities rests in the hands of 2U’s creditors.