# facebookarchive/caffe2

Caffe2 is a lightweight, modular, and scalable deep learning framework.

Repository: https://github.com/facebookarchive/caffe2
Canonical: https://ross.abutalabs.com/products/caffe2
Homepage: https://caffe2.ai
Language: Shell
License: Apache-2.0
License Family: permissive
Topics: deep-learning, machine-learning, ai, artificial-intelligence, caffe2, deep-neural-networks, ml
Archived: true
Last push: 2023-02-07T16:51:06+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4087, "days_push": 1303, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8370, forks 1897 (observed 2026-08-28T04:10:20.544527+00:00)

## What it is
Caffe2 is a lightweight, modular, and scalable deep learning framework built on the original Caffe, with both Python and C++ APIs. It has been merged into PyTorch, and this archived repository is deprecated in favor of the PyTorch project.

## Use cases
- train deep neural networks
- deploy deep learning models in pure C++ without Python
- prototype deep learning ideas quickly in Jupyter notebooks
- build scalable production ML pipelines
- migrate legacy Caffe models to a modern framework

## When to choose
- you are maintaining or reading legacy code that already depends on Caffe2
- you need to study the historical design that fed into PyTorch

## When to avoid
- you are starting a new deep learning project - use PyTorch instead
- you need active community support, updates, or bug fixes
- you want current tutorials or documentation

## Facets
- artifact type: framework
- maturity: abandoned
- function: deep-learning, machine-learning, llm-training
- domain: deep-learning, machine-learning, artificial-intelligence
- platform: python, cpp, windows, cross-platform
- tags: neural-networks, facebook, pytorch-merged, deprecated, c-plus-plus-deployment, linux, macos

## Member repositories
- facebookarchive/caffe2 (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:20.544527+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:27:33.454992+00:00, confidence not recorded.
  - readme: https://github.com/facebookarchive/caffe2 (fetched 2026-08-28T04:10:20.544527+00:00, sha c309efc2d664)
  - homepage: https://caffe2.ai (fetched 2026-08-29T08:27:29.474245+00:00, sha 3b23b49eae43)
  - site_page: https://caffe2.ai/docs (fetched 2026-08-29T08:27:29.483391+00:00, sha 450e55899e21)
  - site_page: https://caffe2.ai/docs/tutorials (fetched 2026-08-29T08:27:29.485679+00:00, sha 107650984613)
  - site_page: https://caffe2.ai/docs/api-intro (fetched 2026-08-29T08:27:29.487808+00:00, sha dc33eeb0d86f)
- Data as of 2026-08-30T08:39:29.467469+00:00.