Empower Language

Learning through

Speech Assessment APIs

Promote growth with cutting-edge Speech Assessment APIs trusted by 100+ EdTech companies and institutions.
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Why SpeechSuper
Customized Scoring
  • Age group
  • Specified pronunciation
  • Grading System and decimal places
  • Lenient or strict about scoring
For word, sentence and paragraph
  • Holistic score
  • 4 dimension scores: pronunciation, fluency, completeness and rhythm
For Word Assessment
  • Phoneme mispronunciation detection
  • Syllable stress detection
  • Spelling and sound sequence alignment
  • Voice activity detection
For Sentence Assessment
  • Real-time feedback
  • Linking and final tone detection
  • Focus word detection
  • Voice activity detection
For Paragraph Assessment
  • Real-time feedback
  • Grading system and precision
  • Voice activity detection
Speech to Text
  • English
  • Mandarin Chinese
How it Works
API input
  • Choose the language and word assessment / sentence assessment / paragraph assessment API.
  • Send reference text and audio to API.
API output
What We Served
10 B+
API requests
100 +
Business customers
99.9 %
Trusted and Used by
Available in English, Mandarin Chinese, German, French, Korean, Japanese, Russian and Spanish.
Word Assessment
$0.004 /request
Audio Length
up to 20s
Sentence Assessment
$0.006 /request
Audio Length
up to 90s
less than 200 words per request
Paragraph Assessment
$0.008 /request
Audio Length
up to 300s
less than 1K words per request
Use 1M requests, get 50K requests for free.
Use 5M requests, get 500K requests for free.