facebookresearch/fairseq2
FAIR Sequence Modeling Toolkit 2
Is facebookresearch/fairseq2 beginner-friendly?
We have not seen enough recent pull requests from first-time contributors to facebookresearch/fairseq2 to say how often they are merged. No beginner-friendly issue is open right now; the list below has the other issues we hold for it.
- Stars
- 1.2k
- Forks
- 144
- Open beginner issues
- 0
- Indexed issues
- 111
- Avg merge
- 4d 1h
- Merged PRs (30d)
- 1
- Dominant language
- Python
- License
- MIT
- Last GitHub push
- Sep 8, 2026
- Latest indexed
- Sep 15, 2026
- Contributing guide
- Contributing guide
- Code of conduct
- Code of conduct
- Beginner labels
- No beginner labels indexed
How to contribute to facebookresearch/fairseq2
- Read the contributing guide first: it says how the maintainers want changes proposed, tested and reviewed.
- Read its code of conduct: it covers issues and pull requests as well as chat.
- Your contributions will be published under the project's MIT license.
- Follow the repository to hear when a new beginner-friendly issue opens, or look through the other issues below.
Issues somebody may already be working on are listed last. List everything by date
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Difficulty 4/5 3-5 days Newbie friendliness 35/100
facebookresearch/fairseq2#1520 ·
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enhancement
Difficulty 3/5 1-2 days Newbie friendliness 20/100
facebookresearch/fairseq2#1518 ·
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attribute ValueError in llama3 models exportMay be free again @YunchaoYang claimed this 112 days ago, and no pull request is open. Openbug
facebookresearch/fairseq2#1517 · 1 assignee ·
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Support Nemotron-3-Nano-Omni in fairseq2May be free again @YunchaoYang claimed this 112 days ago, and no pull request is open. Open
facebookresearch/fairseq2#1513 · 1 assignee ·
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enhancement
Difficulty 5/5 Over a week Newbie friendliness 20/100
facebookresearch/fairseq2#1499 ·
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enhancement
Difficulty 5/5 Over a week Newbie friendliness 35/100
facebookresearch/fairseq2#1498 · 1 reaction ·
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Add support for Qwen3.5 modelMay be free again @YunchaoYang claimed this 189 days ago, and no pull request is open. Openenhancement
facebookresearch/fairseq2#1497 · 1 assignee ·
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enhancement
Difficulty 5/5 Over a week Newbie friendliness 25/100
facebookresearch/fairseq2#1494 · 1 reaction ·
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bug
Difficulty 4/5 3-5 days Newbie friendliness 35/100
facebookresearch/fairseq2#1493 ·
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question
Difficulty 4/5 3-5 days Newbie friendliness 35/100
facebookresearch/fairseq2#1487 ·
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Iterating through asset cards fails when unrelated asset is brokenMay be free again @cirquit claimed this 252 days ago, and no pull request is open. Openbug
facebookresearch/fairseq2#1486 · 1 assignee ·
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NCCL timeouts when reading or writing HF checkpoints for 70B Llama model during multinode trainingOpenbug
Difficulty 5/5 Over a week Newbie friendliness 25/100
facebookresearch/fairseq2#1485 ·
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Improve fbpkg integrationMay be free again @rsyue claimed this 262 days ago, and no pull request is open. Openenhancement
facebookresearch/fairseq2#1483 · 1 comment · 1 assignee ·
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Improve FBCode workflow (ease and automation)May be free again @rsyue claimed this 262 days ago, and no pull request is open. Openenhancement
facebookresearch/fairseq2#1482 · 3 comments · 1 assignee ·
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Different batch sizes result in large numerical differences in transformer modelsMay be free again @cirquit claimed this 269 days ago, and no pull request is open. Openbug
facebookresearch/fairseq2#1481 · 4 comments · 1 assignee ·
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enhancement
Difficulty 5/5 Over a week Newbie friendliness 35/100
facebookresearch/fairseq2#1469 ·
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bug
Difficulty 3/5 1-2 days Newbie friendliness 45/100
facebookresearch/fairseq2#1453 ·
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Improve interop between Gang and PG/DeviceMeshMay be free again @cbalioglu claimed this 331 days ago, and no pull request is open. Openenhancement recipe
facebookresearch/fairseq2#1398 · 1 assignee ·
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Deprecate RecipeModelMay be free again @cbalioglu claimed this 331 days ago, and no pull request is open. Openrecipe
facebookresearch/fairseq2#1397 · 1 assignee ·
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enhancement
Difficulty 4/5 3-5 days Newbie friendliness 42/100
facebookresearch/fairseq2#1391 ·
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enhancement infra
Difficulty 2/5 1-3 hours Newbie friendliness 50/100
facebookresearch/fairseq2#1387 ·
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Support overriding model asset checkpoint via `model.path`May be free again @cbalioglu claimed this 343 days ago, and no pull request is open. Openenhancement recipe
facebookresearch/fairseq2#1385 · 1 reaction · 1 assignee ·
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Support tensor parallel tied embedding/projectMay be free again @cbalioglu claimed this 345 days ago, and no pull request is open. Openenhancement modeling
facebookresearch/fairseq2#1380 · 1 assignee ·
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Add a --no-rich CLI flagMay be free again @cbalioglu claimed this 351 days ago, and no pull request is open. Openenhancement recipe
facebookresearch/fairseq2#1367 · 1 assignee ·
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Document fairseq2.assetsMay be free again @cbalioglu claimed this 352 days ago, and no pull request is open. Opendocumentation enhancement
facebookresearch/fairseq2#1365 · 1 assignee ·
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Introduce support for Qwen Omni modelsMay be free again @cbalioglu claimed this 352 days ago, and no pull request is open. Openenhancement modeling
facebookresearch/fairseq2#1364 · 1 assignee ·
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Implement a generic version of DataReader that supports any iterableMay be free again @cbalioglu claimed this 352 days ago, and no pull request is open. Opendata pipeline enhancement
facebookresearch/fairseq2#1361 · 1 assignee ·
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Document fairseq2.metricsMay be free again @rsyue claimed this 339 days ago, and no pull request is open. Opendocumentation enhancement
facebookresearch/fairseq2#1360 · 2 assignees ·
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Document fairseq2.recipeMay be free again @rsyue claimed this 326 days ago, and no pull request is open. Opendocumentation enhancement
facebookresearch/fairseq2#1359 · 2 comments · 2 assignees ·
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Document fairseq2.runtime.dependencyMay be free again @rsyue claimed this 315 days ago, and no pull request is open. Opendocumentation enhancement
facebookresearch/fairseq2#1358 · 2 assignees ·
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Update LLaMA 4 to use the new sharding APIMay be free again @cbalioglu claimed this 354 days ago, and no pull request is open. Openenhancement modeling
facebookresearch/fairseq2#1353 · 1 assignee ·
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bug
Difficulty 4/5 3-5 days Newbie friendliness 38/100
facebookresearch/fairseq2#1346 · 3 comments ·
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Introduce support for context parallelismMay be free again @cbalioglu claimed this 360 days ago, and no pull request is open. Openenhancement modeling training
facebookresearch/fairseq2#1343 · 1 assignee ·
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data pipeline enhancement
Difficulty 5/5 Over a week Newbie friendliness 25/100
facebookresearch/fairseq2#1335 ·
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question
Difficulty 4/5 3-5 days Newbie friendliness 30/100
facebookresearch/fairseq2#1331 · 3 comments ·
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enhancement
Difficulty 5/5 Over a week Newbie friendliness 20/100
facebookresearch/fairseq2#1327 · 1 comment ·
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Review LLaMA-4 Scout PRMay be free again @cbalioglu claimed this 372 days ago, and no pull request is open. Openmodeling
facebookresearch/fairseq2#1321 · 1 assignee ·
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Bring back support for loading legacy fairseq2 checkpointsMay be free again @cbalioglu claimed this 375 days ago, and no pull request is open. Openbug modeling
facebookresearch/fairseq2#1312 · 1 comment · 1 assignee ·
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Annotate non-stable APIs in the codebaseMay be free again @cbalioglu claimed this 376 days ago, and no pull request is open. Openenhancement
facebookresearch/fairseq2#1311 · 1 assignee ·
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OPT (rebase)May be free again @MartinGleize claimed this 376 days ago, and no pull request is open. Openenhancement modeling
facebookresearch/fairseq2#1309 · 1 comment · 1 assignee ·
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Extend the pack operator to support PO recipesMay be free again @cbalioglu claimed this 376 days ago, and no pull request is open. Opendata pipeline enhancement
facebookresearch/fairseq2#1307 · 1 assignee ·
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Finish the migration of all LM recipes to v0.5May be free again @MartinGleize claimed this 378 days ago, and no pull request is open. Openenhancement recipe
facebookresearch/fairseq2#1304 · 2 comments · 4 assignees ·
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[uv] Adding more supports w/ uvMay be free again @zyaoj claimed this 380 days ago, and no pull request is open. Openenhancement
facebookresearch/fairseq2#1302 · 1 assignee ·
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Improve the implementation of recipe and asset configuration mergerMay be free again @cbalioglu claimed this 381 days ago, and no pull request is open. Openenhancement
facebookresearch/fairseq2#1293 · 1 assignee ·
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Attempt to support checkpoint compressionMay be free again @cbalioglu claimed this 381 days ago, and no pull request is open. Openenhancement training
facebookresearch/fairseq2#1292 · 1 assignee ·
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Attempt to support S3 in CheckpointManagerMay be free again @cbalioglu claimed this 381 days ago, and no pull request is open. Openenhancement training
facebookresearch/fairseq2#1291 · 1 assignee ·
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enhancement
facebookresearch/fairseq2#1279 · 2 comments · 1 assignee ·
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Add a Llama4 (text-only) fine-tuning recipeMay be free again @MartinGleize claimed this 385 days ago, and no pull request is open. Openenhancement modeling training
facebookresearch/fairseq2#1266 · 1 assignee ·
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enhancement
Difficulty 5/5 Over a week Newbie friendliness 25/100
facebookresearch/fairseq2#1264 ·
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question
Difficulty 3/5 1-2 days Newbie friendliness 35/100
facebookresearch/fairseq2#1238 ·
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