EMEA Deployment

LLM Vendor Differences: US vs EMEA

This article outlines the supported Large Language Model (LLM), Speech-to-Text (STT), and Text-to-Speech (TTS) vendors for EMEA deployments, and highlights how they differ from US deployments.

EMEA deployments are restricted to a region-specific subset of vendors and models to ensure compliance with data residency, regulatory, and infrastructure requirements.

URL : https://flow-designer.eu.vnext.ixhello.com/flows

---

1. LLM (Large Language Models)

• Supports low-latency, streaming-based conversational use cases.

Available Models:

• GPT Realtime (gpt-realtime)

---

2. OpenAI Non-Realtime (openai, text-in/text-out)

• Supports standard request-response based interactions.

Available Models:

• GPT 4o Mini (gpt-4o-mini)

• GPT 5 (gpt-5)

• GPT 5.1 (gpt-5.1)

• GPT 5.2 (gpt-5.2)

• GPT-5 Mini (gpt-5-mini)

---

3. STT (Speech-to-Text)

Supported Vendors

• Azure OpenAI Speech-to-Text (azure-openai-stt)

• Used for transcription of audio input into text.

Available Models:

• GPT-4o Transcribe (gpt-4o-transcribe)

• GPT-4o Mini Transcribe (gpt-4o-mini-transcribe)

---

4. TTS (Text-to-Speech)

Supported Vendors

• Azure OpenAI TTS (azure-openai-tts)

• Provides neural voice synthesis for real-time and batch TTS use cases.

Available Models:

• TTS 1 (tts-1)

---

5. Amazon Polly (amazon-polly)

Supports a wide range of voices and synthesis technologies across multiple languages.

Supported Model Types

• Generative (G): Best for the most human-like, conversational, emotionally expressive speech—ideal for assistants, marketing, and customer-facing experiences. Language support: Available in single-language and multi-language voices, enabling seamless code-switching and broader audience reach.

• Neural (N): Best for high-quality, natural-sounding speech in general-purpose applications such as narrations, virtual assistants, and product interfaces. Language support: Primarily single-language voices, with select options supporting multiple languages or accents.

• Long-form (L): Optimized for extended content like audiobooks, training materials, and videos, ensuring consistent pacing, tone, and clarity over long durations. Language support: Typically, single-language voices to maintain consistency, with limited multi-language support depending on the model.

• Standard (S): Designed for cost-effective, large-scale text-to-speech scenarios where basic intelligibility is sufficient and naturalness is less critical. Language support: Mostly single-language voices with broad language coverage, but without cross-language switching capabilities.

Available Voices:

Voice	Gender	Voice Categories	Type	Language(s)
Aditi	Female	Standard	Multi-language	Hindi, Indian English
Adriano	Male	Neural	Single-language	Italian
Alba	Female	Long-form	Single-language	Spanish
Amy	Female	Generative / Neural / Standard	Multi-language	German, US English, British English, Spanish
Andrés	Male	Generative / Neural	Multi-language	Spanish, US English, Portuguese
Aria	Female	Neural	Single-language	US English
Arlet	Female	Neural	Single-language	Spanish
Arthur	Male	Neural	Single-language	British English
Astrid	Female	Standard	Single-language	Swedish
Ayanda	Female	Generative / Neural	Multi-language	German, Nigerian English
Bianca	Female	Generative / Neural / Standard	Multi-language	Brazilian Portuguese, Portuguese, US English, Spanish
Brian	Male	Neural / Standard	Multi-language	US English, Spanish
Burcu	Female	Neural	Single-language	Turkish
Camila	Female	Generative / Neural / Standard	Multi-language	Brazilian Portuguese, US English, Spanish
Carla	Female	Standard	Single-language	Spanish
Carmen	Female	Standard	Single-language	Spanish
Céline	Female	Generative / Neural	Multi-language	French, Swiss French
Chantal	Female	Standard	Single-language	Canadian French
Conchita	Female	Standard	Single-language	Spanish
Cristiano	Male	Standard	Single-language	Portuguese
Daniel	Male	Generative / Neural	Multi-language	German, US English, Norwegian
Danielle	Female	Generative / Neural / Long-form	Multi-language	German, US English, Dutch
Dóra	Female	Standard	Single-language	Hungarian
Elin	Female	Neural	Single-language	Swedish
Emma	Female	Neural / Standard	Multi-language	US English, British English
Enrique	Male	Standard	Single-language	Spanish
Ewa	Female	Generative / Standard	Multi-language	German, Polish
Filiz	Female	Standard	Single-language	Turkish
Gabrielle	Female	Generative / Neural	Multi-language	German, US English, French
Geraint	Male	Standard	Single-language	British English
Giorgio	Male	Standard	Single-language	Italian
Gregory	Male	Neural / Long-form	Multi-language	Norwegian, Dutch
Gwyneth	Female	Standard	Single-language	Welsh
Hala	Female	Neural	Single-language	Arabic
Hannah	Female	Generative / Neural	Multi-language	German, US English
Hans	Male	Standard	Single-language	German
Hiujin	Female	Neural	Single-language	Korean
Ida	Female	Neural	Single-language	Norwegian Bokmål
Inês	Female	Neural / Standard	Multi-language	Portuguese, Spanish
Isabelle	Female	Generative / Neural	Multi-language	German, US English, French
Ivy	Female	Neural / Standard	Multi-language	US English, British English
Jacek	Male	Standard	Single-language	Polish
Jan	Male	Standard	Single-language	Swedish
Jasmine	Female	Neural	Single-language	US English
Jihye	Female	Neural	Single-language	Korean
Jitka	Female	Neural	Single-language	Czech
Joanna	Female	Generative / Neural / Standard	Multi-language	German, US English, British English
Joey	Male	Neural / Standard	Multi-language	Norwegian, British English
Justin	Male	Neural / Standard	Multi-language	Norwegian, British English
Kajal	Female	Generative / Neural	Multi-language	German, US English, Hindi
Karl	Male	Standard	Single-language	Swedish
Kazuha	Female	Neural	Single-language	Japanese
Kendra	Female	Neural / Standard	Multi-language	US English, British English
Kevin	Male	Neural	Single-language	US English
Kimberly	Female	Neural / Standard	Multi-language	US English, British English
Laura	Female	Generative / Neural	Multi-language	German, Norwegian, Dutch
Léa	Female	Generative / Neural / Standard	Multi-language	German, US English, French, Swiss French
Liam	Male	Generative / Neural	Multi-language	German, US English
Lisa	Female	Generative / Neural	Multi-language	German, Norwegian
Liv	Female	Standard	Single-language	Swedish
Lotte	Female	Standard	Single-language	Danish
Lucia	Female	Generative / Neural / Standard	Multi-language	German, US English, Spanish, European Spanish
Lupe	Female	Generative / Neural / Standard	Multi-language	German, US English, Spanish, European Spanish
Mads	Male	Standard	Single-language	Danish
Maja	Female	Standard	Single-language	Polish
Marlene	Female	Standard	Single-language	German
Mathieu	Male	Standard	Single-language	French
Matthew	Male	Generative / Neural / Standard	Multi-language	German, US English, British English, Australian English
Maxim	Male	Standard	Single-language	Russian
Mia	Female	Generative / Neural / Standard	Multi-language	German, US English, Swedish, Norwegian
Miguel	Male	Standard	Single-language	Spanish
Mizuki	Female	Standard	Single-language	Japanese
Naja	Female	Standard	Single-language	Danish
Niamh	Female	Generative / Neural	Multi-language	German, US English, Irish English
Nicole	Female	Standard	Single-language	Australian English
Ola	Female	Generative / Neural	Multi-language	German, US English, Norwegian
Olivia	Female	Generative / Neural	Multi-language	German, US English, British English
Patrick	Male	Long-form	Single-language	Canadian French
Pedro	Male	Generative / Neural	Multi-language	German, US English, Spanish, US Spanish
Penélope	Female	Standard	Single-language	Spanish
Raul	Male	Long-form	Single-language	Brazilian Portuguese
Raveena	Female	Standard	Single-language	Indian English
Rémi	Male	Generative / Neural	Multi-language	German, US English, French
Ricardo	Male	Standard	Single-language	Brazilian Portuguese
Ruben	Male	Standard	Single-language	Dutch
Russell	Male	Standard	Single-language	Australian English
Ruth	Female	Generative / Neural / Long-form	Multi-language	German, US English, British English, Australian English
Sabrina	Female	Neural	Single-language	Swiss German
Salli	Female	Generative / Neural / Standard	Multi-language	German, US English, British English
Seoyeon	Female	Generative / Neural / Standard	Multi-language	German, US English, Korean
Sergio	Male	Generative / Neural	Multi-language	German, US English, Spanish
Sofie	Female	Neural	Single-language	Belgian Dutch
Stephen	Male	Generative / Neural	Multi-language	German, US English
Suvi	Female	Neural	Single-language	Finnish
Takumi	Male	Neural / Standard	Multi-language	Japanese, US English
Tatyana	Female	Standard	Single-language	Russian
Thiago	Male	Neural	Single-language	Brazilian Portuguese
Tomoko	Female	Neural	Single-language	Japanese
Vicki	Female	Generative / Neural / Standard	Multi-language	German, US English, British English, Australian English
Vitória	Female	Neural / Standard	Multi-language	Portuguese, Brazilian Portuguese
Zayd	Male	Neural	Single-language	Arabic
Zeina	Female	Standard	Single-language	Arabic
Zhiyu	Female	Neural / Standard	Multi-language	Mandarin Chinese, Cantonese Chinese