Chainer: A deep learning framework by chainer
A flexible framework of neural networks for deep learning
About Chainer: A deep learning framework
From the project's README at github.com/chainer/chainer. Lightly cleaned for readability; for the full source see the upstream repo.
Notice: As announced, Chainer is under the maintenance phase and further development will be limited to bug-fixes and maintenance only.
[](https://pypi.python.org/pypi/chainer) [](https://github.com/chainer/chainer) [](https://travis-ci.org/chainer/chainer) [](https://coveralls.io/github/chainer/chainer) [](https://docs.chainer.org/en/stable/?badge=stable) [](https://optuna.org)
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 | 5.9k | github.com/chainer/chainer |
| GitHub forks | 1.3k | github.com/chainer/chainer |
| Docker Hub pulls | 151k | hub.docker.com / chainer |
| PYPI downloads (last month) | 18k | chainer |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 10.9 years | since Jun 2015 |
| Last commit | 2.7 years ago | Aug 28, 2023 |
| Releases shipped | 108 | last: 3.9 years 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
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- I'm writing a history of Visual Basic, Chapter 1 is up
- House Committees Probe Cursor Parent, Airbnb over Chinese AI
- Show HN: I indexed 8,643 BSides talks across 227 chapters and 6 continents
Ready to self-host Chainer: A deep learning framework?
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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