Soniox vs Deepgram
for Slovak speech-to-text
Higher accuracy in real-world Slovak, real-time features, and in-stream translation that Deepgram can't match.
Developers choose Soniox for accuracy in Slovak speech
Slovak is spoken by 5.4 million people worldwide — primarily in Slovakia, with speakers around the world. Soniox delivers production-ready transcription and translation for Slovak, handling regional accents, code-switching, and real-world audio conditions. Deepgram lists Slovak as supported, but benchmark results show far higher error rates compared to Soniox.
Developers often like Deepgram for getting started quickly but often have to sacrifice accuracy, streaming speed, and key features. In real-world Slovak audio, which can include accents, rapid speech, and overlapping speakers, errors increase, streaming lags, and translation isn't included. Soniox offers one API that transcribes and translates Slovak (and 60+ others) with higher accuracy and smoother real-time performance, so your app instantly works worldwide.
Trusted accuracy
Soniox outperforms Deepgram on real-world Slovak speech, so there's less to fix later. Soniox hits 8.5% WER in Slovak vs 23.6% for Deepgram.
Faster streaming in Slovak
Apps feel smooth and human with token-level updates, refinements, and full transcript control in Slovak.
Slovak translation built in
One API delivers transcription and two-way translation across 60+ languages, including Slovak. Your app works for 8 billion people worldwide with no extra services required.
Helping startups and enterprises ship real world voice apps
See the difference for yourself
Don't just take our word for it. Run the same Slovak audio through Soniox and Deepgram in real time and compare live results, side by side.
This demo isn't pre-recorded. It makes real API calls to Deepgram and Soniox in real time, with each service tuned for its best performance. The framework is open source, so you can inspect or run it yourself.
SONIOX VS DEEPGRAM AT A GLANCE
The benchmarks back it up
In a 2025 study across 60 languages and real-world YouTube audio, Soniox reached 8.5% WER in Slovak vs 23.6% for Deepgram.
View the full benchmark report| Feature | Sonioxstt-rt-v3 | Deepgramnova-3 |
|---|---|---|
| open_in_newSingle Multilingual Model | check | check |
| open_in_newLanguage Hints | check | close |
| open_in_newLanguage Identification | check | close |
| open_in_newSpeaker Diarization | check | check |
| open_in_newCustomization | check | check |
| open_in_newTimestamps | check | check |
| open_in_newConfidence Scores | check | check |
| open_in_newTranslation One Way | check | close |
| open_in_newTranslation Two Way | check | close |
| open_in_newEndpoint Detection | check | warning |
| open_in_newManual Finalization | check | check |
“It just gets the words right — any language, any accent, any context. That’s what accuracy is supposed to look like.”
Tony Wang,
Cofounder & Chief Revenue Officer at Agora
More than transcription. Accuracy, speed, and translation built in.
Accuracy that holds up in Slovak.
With Soniox, you get transcripts you can trust, even in noisy, overlapping Slovak speech. Soniox reached 8.5% WER in Slovak vs 23.6% for Deepgram, meaning fewer mistakes and less cleanup.
Deepgram falls apart in noisy or overlapping audio.
Real-time Slovak streaming.
Apps stay smooth and responsive with token-level updates in milliseconds. You still get full control with refinements, finalization, and endpoint detection.
Deepgram only streams by the sentence, so transcripts lag and jump.
Global-ready from the start.
One API covers transcription and two-way translation for Slovak and 60+ others.
Deepgram requires separate services and can't handle translation.
Simple pricing that scales.
Soniox pricing stays flat: ~$0.10–0.12/hr with every feature included. No tiers, upsells, or surprises as you grow.
Deepgram charges more – and still doesn't include translation.
Pay 2-3x less than Deepgram
With Soniox, transcription, translation, diarization, timestamps, and confidence are all included in one price. Deepgram charges more per tier and doesn't bundle translation at all.
Effective hourly cost
(typical speech)
Soniox
~$0.10/hour (async)
~$0.12/hour (streaming)
Deepgram
~$0.20–0.40/hour depending on model tier (Nova-2, Nova-3, Enhanced)
Takeaway
For Slovak, you'll typically pay 2–3x less than Deepgram, while getting higher accuracy, smoother streaming, and built-in translation out of the box.
- Soniox bills per token, which works out to the effective hourly rates above for typical conversational speech.
- Deepgram pricing varies by tier: lower-cost "Nova" models are less accurate, while higher-cost "Enhanced" adds expense. Translation requires a separate service.
- All comparisons use publicly listed rates as of 2025.
Fluent at any speed
Watch Soniox keep up with fast speech in any language
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Russian to English with SONIOX
Speaking Super Fast in Italian – Soniox still translated every word into English
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Real-Time from Slovenian to English with SONIOX
Valeria Juri Reads Ukrainian Poem “Мовчати” | Live English Translation by Soniox
Frequently asked questions about Soniox vs Deepgram
1.Is Soniox cheaper than Deepgram?arrow_downward
2.Does Deepgram support Slovak translation?arrow_downward
3.How does Soniox streaming compare to Deepgram?arrow_downward
4.Does Deepgram support diarization and timestamps?arrow_downward
5.Can Soniox handle multiple languages in one stream?arrow_downward
Soniox surpasses Deepgram in any language
Get the most accurate, real-time speech-to-text transcription and translation in 60+ languages
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