Included by default
Sovereign Cloud
- Hosting by EU companies only
- AWS, Google Cloud and Microsoft Azure are not engaged
- No route for a US CLOUD Act order to reach your audio, text or voice profiles
- Included by default for EU/EEA customers
Voice AI Made in Europe
OpenAI TTS alternative with EU hosting
EU Sovereign Cloud included on every plan, no enterprise contract.
GDPRZero data retention for content dataEU AI Act · aligned with Article 50
Play the demo
“Good afternoon, your appointment is on 03/15/2025 at 2:30 p.m. The office is located at 42a Bridge Street. For questions, reach us at 02079460123 or info@clinic.co.uk.”
Real model output · Kugel v3Dates, addresses, phone numbers and email addresses, read correctly
Direct comparison
KugelAudio vs OpenAI TTS
OpenAI’s speech endpoint is a convenient default. For languages beyond English, data location and deployment, the details differ.
| Decision criterion | KugelAudio | OpenAI TTS |
|---|---|---|
| Pricing | Per generated minute: €0.035 (kugel-2-turbo), €0.07 (kugel-3) | gpt-4o-mini-tts: $0.60 per 1M text tokens in, $12 per 1M audio tokens out · tts-1: $15 per 1M characters |
| Languages | 39 languages, German numbers, IBANs and emails read correctly | Follows Whisper’s language support; voices optimized for English |
| Data location in the EU | EU Sovereign Cloud included on every plan | EU data residency for eligible projects, approval required |
| Custom voices | Voice cloning from under 1 minute of audio | From a consent recording, subject to eligibility |
OpenAI figures come from its public API documentation, accessed October 2026. Please verify current terms for your plan.
Sources
- OpenAI API documentation: Text to speech, accessed October 15, 2026
- OpenAI API documentation: GPT-4o mini TTS model and pricing, accessed October 15, 2026
- OpenAI API documentation: TTS-1 model and pricing, accessed October 15, 2026
- OpenAI API documentation: Data controls and data residency, accessed October 15, 2026
Data sovereignty
Your data stays in Europe
Built, trained and hosted in the EU, outside the reach of the US CLOUD Act.
Live within days
On-premise
- Runs in your data centre, behind your firewall
- Same SDK and API as in the cloud
- Up to 192 concurrent calls per GPU, integrations unchanged
Custom dictionaries
Brand names? Right, every time.
Store the pronunciation once in your dictionary. From then on, the model says the name correctly in every single response.
- 1
Your text
“Order your new tableware at Villeroy & Boch.”
- 2
Your dictionary entry
Villeroy & Boch → [ˌvɪləɉɔɪ ʔʊnt ˈbɔx]
- 3
The output
Pronounced correctly. Every time, in every response.
Works the same for product names, technical terms and abbreviations, via IPA notation or a simple replacement.
Pricing
Priced per generated minute
No character accounting, no seat tiers.
kugel-2-turbo
Fast, budget-friendly text-to-speech model
€0.035 / min
~40–50 ms TTFA*~€42.42 / 1M characters**
- Guaranteed EU hosting
- EU Sovereign Cloud included (EU/EEA)
- Integrated normalizer
- Voice cloning
- Speed control
- Break tokens
- Word-level timestamps
- Dictionaries
kugel-3
Premium text-to-speech model with maximum naturalness
€0.07 / min
~60–80 ms TTFA*~€84.85 / 1M characters**
- Guaranteed EU hosting
- EU Sovereign Cloud included (EU/EEA)
- Integrated normalizer
- Voice cloning
- Speed control
- Break tokens
- Word-level timestamps
- Dictionaries
- IPA notations
On-premise, dedicated capacity and committed-usage rates are available on request.
* Inference TTFA, measured server-side. More in the latency docs · ** Character costs assume approximately 825 characters per minute.
FAQ
Questions about OpenAI TTS alternatives
What is the best European alternative to OpenAI TTS?
KugelAudio is a German company building real-time text-to-speech in 39 languages, hosted in the EU. The EU Sovereign Cloud option engages only EU companies as subprocessors, and it is included on every plan rather than sold as an enterprise add-on.
Can OpenAI TTS keep data in the EU?
OpenAI offers EU data residency for its speech endpoint (/v1/audio/speech) to eligible projects. Outside the US it requires approval for abuse monitoring controls and a modified retention amendment. KugelAudio’s EU Sovereign Cloud is included on every plan.
How does pricing compare?
KugelAudio charges per generated minute: €0.035 for kugel-2-turbo and €0.07 for kugel-3. OpenAI bills gpt-4o-mini-tts per token, at $0.60 per 1M text input tokens and $12 per 1M audio output tokens, and tts-1 at $15 per 1M characters.
How does KugelAudio handle German?
OpenAI states that its voices are optimized for English. KugelAudio offers 112 German voices and reads German numbers, IBANs and email addresses correctly by default.
Can I run the models on my own infrastructure?
Yes, within days. The models run in your data centre behind your firewall with the same SDK and API as the hosted service, handling up to 192 concurrent calls per GPU.
Ready to build your first voice?
Real-time, EU-hosted voice that scales with your product.