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fasttext-language-identification

Meta's fastText-based language identification model, capable of identifying 176 languages from short text strings. Extremely fast CPU inference makes it practical for preprocessing pipelines that need to route text by language.

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From the model card

Fields below are copied from the tags and counters on the HuggingFace repository facebook/fasttext-language-identification at our last fetch. They are set by the uploader, not verified by us; rows with no tag are omitted. How this page is made.

Publisher (HF namespace)
facebook
Pipeline tag
text-classification
License tag
cc-by-nc-4.0 — read the license file in the repo before relying on it
Papers cited
arXiv:1607.04606, arXiv:1802.06893, arXiv:1607.01759, arXiv:1612.03651
Downloads (HF counter at last fetch)
427,059
Likes (HF counter at last fetch)
278
Model card
https://huggingface.co/facebook/fasttext-language-identification

Use cases

  • Language detection preprocessing in multilingual NLP pipelines
  • Filtering multilingual corpora by language label
  • Language routing for translation or ASR system selection
  • Content moderation to detect unexpected languages in user input

Pros

  • 176 language coverage is broad — handles most real-world language identification needs
  • Extremely fast: thousands of predictions per second on CPU
  • Tiny model footprint (<1 MB)
  • Well-tested in production across many organizations

Cons

  • Short text accuracy degrades significantly — fails on single words or very short phrases
  • Code-switching text may produce unreliable results
  • Some language pairs (e.g. Malay/Indonesian, Serbian/Croatian/Bosnian) are confused at higher rates
  • fastText format requires the fastText Python library, not standard transformers

Tags

fasttexttext-classificationlanguage-identificationarxiv:1607.04606arxiv:1802.06893arxiv:1607.01759arxiv:1612.03651license:cc-by-nc-4.0region:us