Pronunciation scoring, down to the syllable

A REST API that returns per-syllable IPA and timing for 17 languages. Hosted in Germany, or run it inside your own infrastructure.

Try it in your browser Read the API docs

Free tier: 15 minutes of audio per month. No credit card.

Real-time pronunciation feedback with per-syllable accuracy and timing

GDPR compliant

Hosted in Germany, on Hetzner infrastructure

Audio is never stored

Processed in memory and discarded — never written to disk

Self-host ready

Run the whole stack inside your own network

17 languages

One multipart request, one response shape

Interactive Demo

Try the Pronunciation API

Record yourself speaking in any of our supported languages and get instant, detailed feedback on your pronunciation accuracy.

Selected:
こんにちは、私は学生です。
Hello, I am a student.
Ready to record?
Demo Rate Limits: Maximum 10 requests per minute, 1 per second per IP address.Click the Record button above to start

Response structure

Words are broken into syllables with their expected and detected IPA and millisecond timing.

  • Syllable-level accuracy with expected and detected IPA
  • Duration and start/end offsets per syllable
  • 17 languages supported
  • Missing and extra syllable detection
See the full response schema

The whole integration

curl -X POST "https://api.lingolix.com/api/pronunciation/v3/check" \
  -H "Authorization: Bearer $LINGOLIX_API_KEY" \
  -F "speechdata=@audio.wav" \
  -F "sentence=Guten Morgen" \
  -F "language_code=de"

Omit the sentence parameter to get a transcription first, and then score of what was actually said.

From demo to production in three steps

1

Try it in the browser

Record a sentence in any of 17 languages and see syllable-level IPA and timing come back. No signup.

2

Get a free API key

15 minutes of audio per month, no credit card. Create and revoke keys from your dashboard.

3

Integrate

One multipart POST. Copy the cURL, Python or JavaScript example from the docs, swap in your key, and you are integrated.

Start with the free tier

Create a key, run the request above, and see the response for yourself. Talk to us when you need volume or on-premise.

Get a free API key View pricing

Need on-premise deployment or a DPA? Talk to us