Text Analysis – Free-tier APIs
15 Free-tier APIs in the category Text Analysis. Free public web APIs that developers and AI agents can call. Entries come from the open public-apis list; each link was checked automatically (HTTP status) on the date shown, which says the site responded, not that the API is good.
apilayer languagelayer
Language Detection JSON API supporting 173 languages
Cloudmersive Natural Language Processing
Natural language processing and text analysis
Detect Language
Detects text language
eidosSpeech
Free text-to-speech API with 1,200+ neural voices in 75+ languages
ELI
Natural Language Processing Tools for Thai Language
GeoScore
Score content for AI search citation readiness with a 0-100 GEO score and 8 structural metrics
Google Cloud Natural
Natural language understanding technology, including sentiment, entity and syntax analysis
Hirak OCR
Image to text -text recognition- from image more than 100 language, accurate, unlimited requests
Hirak Translation
Translate between 21 of most used languages, accurate, unlimited requests
Langbly
Context-aware text translation and language detection for 100+ languages
Lecto Translation
Translation API with free tier and reasonable prices
LibreTranslate
Translation tool with 17 available languages
Semantria
Text Analytics with sentiment analysis, categorization & named entity extraction
Tisane
Text Analytics with focus on detection of abusive content and law enforcement applications
ToHuman
Rewrite AI-assisted drafts into natural, human-sounding text that reads like you wrote it