Lingua Detective vs the alternatives — honest comparisons

Answer-first comparisons against the libraries and services people actually consider: CLD3, fastText, franc, Google Cloud Translation, and building it yourself. Real pricing math, no hype.

Build it in-house

The real cost of DIY language QA: crawler, renderer, boilerplate stripping, verdicts and reports.

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CLD3

Google's compact open-source detector — great for a string, silent on the site around it.

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fastText

Meta's free offline model (lid.176). The library is free — the pipeline around it isn't.

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franc

The offline detection library behind our own engine, compared against the full product.

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Google Cloud Translation

detectLanguage bills per character and needs a GCP account — vs per-page offline auditing.

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