lightly-ai/lightly

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A python library for self-supervised learning on images.

Stars: 3.8k
Forks: 367
Open beginner issues: 0
Indexed issues: 74
Avg merge: 3d 22h
Merged PRs (30d): 5

Dominant language: Python
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue help wanted

Beginner friendly Everything

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74 open issues indexed

Support gradient checkpointing in ViT ImageNet benchmarks Open

enhancement help wanted

Difficulty 4/5 3-5 days Newbie friendliness 68/100

lightly-ai/lightly#2054 · Opened Sep 1, 2026
ImageNet benchmark runs can't cleanly resume: no last.ckpt + timestamped run dirs Open

enhancement good first issue

Difficulty 4/5 3-5 days Newbie friendliness 68/100

lightly-ai/lightly#2053 · Opened Sep 1, 2026
Tutorial proposal: customize and inspect DINO views with AlbumentationsX Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

lightly-ai/lightly#2047 · 1 comment · Opened Aug 28, 2026
New SSL method: Franca (Nested Matryoshka Clustering) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

lightly-ai/lightly#2010 · 4 comments · Opened Jul 30, 2026
Migrate unittest.TestCase to pytest-style test classes Open

enhancement good first issue help wanted

Difficulty 3/5 1-2 days Newbie friendliness 75/100

lightly-ai/lightly#1987 · 8 comments · Opened Jul 22, 2026
Proper distributed tests Open

advanced enhancement help wanted

lightly-ai/lightly#1982 · 4 comments · 1 assignee · Opened Jul 14, 2026
Another paper connected to SIGreg loss and LeJepa Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

lightly-ai/lightly#1949 · 1 comment · 1 reaction · Opened Jun 19, 2026
New paper as an extension of LeJEPA Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

lightly-ai/lightly#1936 · 2 comments · 1 reaction · Opened Jun 4, 2026
World models building blocks, starting with LeWM / Sub-JEPA Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

lightly-ai/lightly#1934 · 2 comments · Opened Jun 1, 2026
[BUG] macOS: `make test-fast` hangs indefinitely Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lightly-ai/lightly#1917 · 6 comments · 1 reaction · Opened Apr 23, 2026
Implement: Stochastic positional embeddings improve masked image modeling Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

lightly-ai/lightly#1900 · 4 comments · 1 reaction · Opened Mar 4, 2026
LeJEPA Open

lightly-ai/lightly#1888 · 8 comments · 1 reaction · 1 assignee · Opened Nov 12, 2025
`lr_scheduler.step()` must be called before `optimizer.step()` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lightly-ai/lightly#1887 · 1 comment · Opened Nov 8, 2025
DinoV3 support? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

lightly-ai/lightly#1881 · 17 comments · Opened Sep 11, 2025
Question on Pretext Tasks Open

question

Difficulty 5/5 Over a week Newbie friendliness 20/100

lightly-ai/lightly#1879 · 5 comments · Opened Aug 15, 2025
Reproducing SimCLR on ImageNet-1K from provided pretrained ckpt Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

lightly-ai/lightly#1824 · 5 comments · Opened May 7, 2025
Include SimDINO Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

lightly-ai/lightly#1822 · 4 comments · Opened May 4, 2025
Expose RandomResizedCrop ratio argument Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

lightly-ai/lightly#1814 · 5 comments · Opened Apr 9, 2025
PMSN Loss Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

lightly-ai/lightly#1792 · 3 comments · Opened Feb 3, 2025
Read Multispectral data for Remote Sensing using LightlyDataset Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

lightly-ai/lightly#1780 · 1 comment · Opened Jan 13, 2025
Can we use MSN with timm library? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

lightly-ai/lightly#1755 · 1 comment · Opened Dec 23, 2024
MultiMAE: Multi-modal Multi-task Masked Autoencoders Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

lightly-ai/lightly#1754 · Opened Dec 21, 2024
Mypy is failing while checking finetune_eval.py Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

lightly-ai/lightly#1733 · 7 comments · Opened Nov 13, 2024
Use torchvision transforms instead of PIL operations for solarization and gaussian blurring Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

lightly-ai/lightly#1728 · 1 comment · 1 reaction · Opened Nov 7, 2024
Which is better Open

question

Difficulty 5/5 Over a week Newbie friendliness 15/100

lightly-ai/lightly#1711 · 1 comment · Opened Oct 28, 2024
Any tutorials on "Cross-Modal Contrastive Learning" with Lightly? Open

question

Difficulty 4/5 3-5 days Newbie friendliness 25/100

lightly-ai/lightly#1708 · 1 comment · Opened Oct 24, 2024
Cleanup docstrings in lightly/data subpackage Open

documentation enhancement good first issue

lightly-ai/lightly#1674 · 6 comments · 1 assignee · Opened Oct 7, 2024
Integrate Lightly with Hugging Face Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

lightly-ai/lightly#1672 · 5 comments · Opened Oct 7, 2024
OoM issue with multiple gpus using Distributed Data Parallel (DDP) training Open

question

Difficulty 4/5 3-5 days Newbie friendliness 25/100

lightly-ai/lightly#1650 · 4 comments · Opened Sep 20, 2024
Type Check Package Open

good first issue help wanted

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lightly-ai/lightly#1635 · 14 comments · 1 reaction · Opened Aug 16, 2024
Divergent loss with SimCLR Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

lightly-ai/lightly#1633 · 5 comments · Opened Aug 15, 2024
Provide Benchmark Backbone Checkpoint Weights Open

feature

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lightly-ai/lightly#1621 · 3 comments · Opened Jul 31, 2024
Update I-JEPA example to use timm Open

feature

Difficulty 3/5 1-2 days Newbie friendliness 45/100

lightly-ai/lightly#1614 · 1 comment · Opened Jul 29, 2024
torch._C._LinAlgError: linalg.svd: (Batch element 0): The algorithm failed to converge because the input matrix is ill-conditioned or has too many repeated singular values (error code: 15). Open

question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lightly-ai/lightly#1599 · 1 comment · Opened Jul 24, 2024
Grad-CAM or attention map Open

feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

lightly-ai/lightly#1587 · 1 comment · Opened Jul 15, 2024
Transfer Learning? Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 25/100

lightly-ai/lightly#1574 · 5 comments · Opened Jul 7, 2024
Add multi-modal method(s) Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 20/100

lightly-ai/lightly#1573 · 1 comment · Opened Jul 6, 2024
Support for Video SSL methods Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 20/100

lightly-ai/lightly#1557 · 1 comment · Opened Jun 13, 2024
Supervised Contrastive Loss Open

feature request

lightly-ai/lightly#1554 · 2 comments · 1 assignee · Opened Jun 6, 2024
Figure out how to support codecov with multiprocessing Open

enhancement package

Difficulty 5/5 Over a week Newbie friendliness 25/100

lightly-ai/lightly#1548 · Opened May 22, 2024
Remove opencv dependency from tests Open

enhancement good first issue

lightly-ai/lightly#1477 · 14 comments · 1 assignee · Opened Jan 15, 2024
W-MSE docs and examples Open

feature

lightly-ai/lightly#1465 · 1 assignee · Opened Jan 2, 2024
W-MSE benchmark Open

feature

lightly-ai/lightly#1464 · 1 assignee · Opened Jan 2, 2024
New SSL algorithm called SparK: Sparse and Hierarchical masKed modeling Open

feature request

lightly-ai/lightly#1462 · 18 comments · 1 assignee · Opened Dec 20, 2023
MMCR benchmark Open

feature

Difficulty 3/5 1-2 days Newbie friendliness 35/100

lightly-ai/lightly#1452 · Opened Dec 13, 2023
CycleCL Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 25/100

lightly-ai/lightly#1447 · 3 comments · Opened Dec 12, 2023
Speed up benchmarks by disabling find_unused_parameters Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

lightly-ai/lightly#1434 · Opened Nov 24, 2023
New SSL algorithm called Maximum Manifold Capacity Representations (NeurIPS 2023) Open

feature request

lightly-ai/lightly#1423 · 5 comments · 1 reaction · 1 assignee · Opened Nov 7, 2023
Feature Request: Return all losses with multi-loss methods e.g., VICReg Open

feature request

Difficulty 3/5 1-2 days Newbie friendliness 38/100

lightly-ai/lightly#1422 · 4 comments · Opened Nov 7, 2023
EMP-SSL Open

feature request

lightly-ai/lightly#1343 · 5 comments · 1 reaction · 1 assignee · Opened Aug 2, 2023

lightly-ai/lightly

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