What is fast.ai?
fast.ai offers completely free deep learning courses built around a top-down, code-first teaching philosophy: you train real models from day one and learn the underlying theory as you go, rather than starting with months of math prerequisites.
Key features
- Completely free courses with no paywalled content
- Code-first approach that gets you training models immediately
- The widely used fastai Python library built alongside the courses
- Active community forum for getting help and sharing projects
- Courses covering both deep learning fundamentals and NLP
How to get started
- Go to fast.ai and start with the Practical Deep Learning course
- Follow along by running the provided notebooks yourself
- Use the fastai library to train your own models
- Join the community forum for help and project feedback
Use cases
- Learning deep learning without extensive math prerequisites first
- Getting hands-on with real model training quickly
- Self-taught practitioners building a portfolio of projects
- Supplementing more theoretical courses with practical coding
fast.ai vs. alternatives
| Tool | How it compares |
|---|---|
| fast.ai | Free, code-first deep learning courses for everyone. |
| DeepLearning.AI | more structured, theory-first curriculum |
| Kaggle | competition-based practice instead of courses |
FAQ
Is fast.ai free to use?
fast.ai's plans: Free. Pricing and free-tier limits change over time, so check the official site above for the latest details.
What is fast.ai used for?
Free, code-first deep learning courses for everyone.
Who is fast.ai best for?
fast.ai is a good fit for learning deep learning without extensive math prerequisites first, or getting hands-on with real model training quickly.
What are the alternatives to fast.ai?
Commonly compared alternatives include DeepLearning.AI and Kaggle, see the comparison above for how they differ.
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KLast reviewed: 2026-08 · Reviewed by AIKetra editors · How we evaluate tools