ResearchResearch paperLarge Language Models · Multimodal Models · Data & Datasets2 sources · Oct 12, 2026

MixLID: Token-Level Language Identification in Mixed-Language Text

We introduce MixLID, a token-level language identification model supporting 111 language-script combinations.

Key points

  • Processing multilingual text requires both identifying a broad range of languages and distinguishing the language of each token in inputs containing multiple languages.
  • MixLID follows a two-stage training process: it first learns to distinguish individual languages using the language labels of monolingual examples, then continues training on mixed-language data.
  • For monolingual identification, MixLID outperforms all baselines in both accuracy and macro F1 on four benchmarks within the language coverage shared with each baseline.
  • MixLID achieves high performance across a broad range of languages in both monolingual and mixed-language settings.

Sources (2)

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