Welcome to fastai by fastai
The fastai deep learning library
About Welcome to fastai
From the project's README at github.com/fastai/fastai. Lightly cleaned for readability; for the full source see the upstream repo.
[](https://github.com/fastai/fastai/actions/workflows/main.yml) [](https://pypi.org/project/fastai/#description) [](https://anaconda.org/fastai/fastai) Installing
You can use fastai without any installation by using Google Colab. In fact, every page of this documentation is also available as an interactive notebook - click “Open in colab” at the top of any page to open it (be sure to change the Colab runtime to “GPU” to have it run fast!) See the fast.ai documentation on Using Colab for more information.
To ensure that you have the best available version of PyTorch on your machine, recommend installing that first.
If you plan to develop fastai yourself, or want to be on the cutting edge, you can use an editable install (if you do this, you should also use an editable install of fastcore to go with it.) First install PyTorch, and then:
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 28k | github.com/fastai/fastai |
| GitHub forks | 7.7k | github.com/fastai/fastai |
| Docker Hub pulls | 55k | hub.docker.com / fastai |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 8.7 years | since Sep 2017 |
| Last commit | 9 days ago | Apr 28, 2026 |
| Releases shipped | 63 | last: 3 months ago |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
What people say on Hacker News
- Server Migration Without Extra Disk Space: Streaming Borg Backups with Ffl
- Fast-AI-detector: a fast local CLI for detecting AI-generated text
- An MCP Server for Fastmail – National Email Day
- Show HN: A simple intermittent fasting tracker and meditation timer
- Show HN: Detecting API degradation before thresholds are crossed
Ready to self-host Welcome to fastai?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
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