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Udemy vs Coursera vs O'Reilly vs 365 Data Science for AI courses

Udemy sells individual video courses, Coursera offers university and company courses with free audits and a subscription, O'Reilly is a subscription library of books, videos and labs, and 365 Data Science is a subscription curriculum for data science. This page compares their pricing models, formats and AI catalog sizes side by side.

Updated 2026-10-22 · 4 items · catalogs from Udemy, Coursera, O'Reilly and 365 Data Science

Provider	Pricing model	Format	Best for	Courses listed	AI course pages
Udemy	Buy each course once, with frequent discounts; lifetime access	Video courses by independent instructors, often project-based	Learning one tool or framework hands-on	199,370	4,311
Coursera	Audit many courses free; pay per course or with a Coursera Plus subscription	Courses and Specializations from universities and companies	Structured, credential-backed learning paths	9,182	366
O'Reilly	Subscription to the O'Reilly learning platform, with a free trial	Books, videos, live events and interactive labs	Depth and reference material across the whole stack	179	33
365 Data Science	Subscription with a limited free plan	Guided data science career tracks with projects and exams	A single curriculum from spreadsheets to machine learning	3	3

Frequently asked questions

Which platform has the most AI and data science courses?

Counting the course pages in this library: Udemy 4,311, Coursera 366, O'Reilly 33, 365 Data Science 3. Udemy's catalog is the largest; Coursera's is more selective; O'Reilly and 365 Data Science list fewer, curated titles.

Which is cheapest for learning AI?

It depends on volume. One course on Udemy is cheapest during its frequent discounts; several courses a month favour a subscription (Coursera Plus, O'Reilly or 365 Data Science). Coursera lets you audit many courses free. Current prices are shown only on the provider sites.

Do these courses give certificates?

Udemy and 365 Data Science issue certificates of completion; Coursera issues shareable certificates and some accredited degrees; O'Reilly is a reading and learning platform rather than a certificate provider. Check the provider page of each course.