SLNG-hosted models use the
slng/ prefix in the model identifier. They are optimized for low latency in specific regions and billed through your SLNG account with no separate provider account needed.Text-to-Speech
Orpheus English
Orpheus English
Provider: CanopyLabs | Hosting: SLNG | Languages: EnglishEmotion-controllable TTS with natural-sounding speech. Supports joy, sadness, anger, and more.
Best for: expressive voice agents, storytelling.
| Identifier | Description |
|---|---|
slng/canopylabs/orpheus:en | English |
Rime Arcana v3
Rime Arcana v3
Provider: Rime | Hosting: SLNG | Languages: English, HindiNatural prosody with improved voice quality over v1. French and Spanish support planned.
Best for: conversational agents, high-quality voice output.
| Identifier | Description |
|---|---|
slng/rime/arcana:3-en | English |
slng/rime/arcana:3-hi | Hindi |
Rime Arcana v1
Rime Arcana v1
Provider: Rime | Hosting: SLNG | Languages: Arabic, English, French, German, Spanish150+ voices across 5 languages. Uses unversioned identifiers (
Best for: broad language coverage, high-volume production.
arcana: instead of arcana:3-).| Identifier | Description |
|---|---|
slng/rime/arcana:en | English |
slng/rime/arcana:es | Spanish |
slng/rime/arcana:fr | French |
slng/rime/arcana:de | German |
slng/rime/arcana:ar | Arabic |
Deepgram Aura 2
Deepgram Aura 2
Provider: Deepgram | Hosting: SLNG + Deepgram | Languages: English, SpanishAvailable both SLNG-hosted (low latency) and proxied to Deepgram (more languages).
Best for: low-latency voice apps, multilingual IVR.
| Identifier | Description |
|---|---|
slng/deepgram/aura:2 | SLNG-hosted (default, no language suffix) |
slng/deepgram/aura:2-en | SLNG-hosted (English) |
slng/deepgram/aura:2-es | SLNG-hosted (Spanish) |
deepgram/aura:2 | Proxied to Deepgram (7 languages) |
Sarvam Bulbul v3
Sarvam Bulbul v3
Provider: Sarvam AI | Hosting: Sarvam AI | Languages: 11 Indian languagesPurpose-built for Indian languages with 30+ speaker voices.
Best for: India-focused voice apps, regional language support.
| Identifier | Description |
|---|---|
sarvam/bulbul:v3 | Proxied to Sarvam AI |
Speech-to-Text
Whisper Large v3
Whisper Large v3
Provider: OpenAI | Hosting: SLNG | Languages: 99+Automatic language detection across 99+ languages.
Best for: multilingual transcription, language detection.
| Identifier | Description |
|---|---|
slng/openai/whisper:large-v3 | Standard |
slng/openai/whisper:large-v3-compressed | Lower latency, same language support |
Deepgram Nova 3
Deepgram Nova 3
Provider: Deepgram | Hosting: SLNG + Deepgram | Languages: English, Spanish, HindiAvailable both SLNG-hosted and proxied.
Best for: low-latency streaming, voice agents.
| Identifier | Description |
|---|---|
slng/deepgram/nova:3-en | SLNG-hosted (English) |
slng/deepgram/nova:3-es | SLNG-hosted (Spanish) |
slng/deepgram/nova:3-hi | SLNG-hosted (Hindi) |
slng/deepgram/nova:3-multi | SLNG-hosted (auto-detect) |
deepgram/nova:3 | Proxied to Deepgram (17 languages) |
deepgram/nova:3-medical | Proxied to Deepgram (medical English) |
Deepgram Nova 2
Deepgram Nova 2
Provider: Deepgram | Hosting: Deepgram | Languages: 36Proven model with VAD, diarization, and smart formatting.
Best for: production transcription, multi-speaker audio.
| Identifier | Description |
|---|---|
deepgram/nova:2 | Proxied to Deepgram |
Choosing a model
| Use case | Recommended STT | Recommended TTS |
|---|---|---|
| Voice agents (low latency) | slng/deepgram/nova:3-en | slng/canopylabs/orpheus:en |
| Multilingual transcription | slng/openai/whisper:large-v3 | slng/rime/arcana:en |
| Indian languages | slng/deepgram/nova:3-hi | sarvam/bulbul:v3 |
| Batch transcription | deepgram/nova:3 | — |
| Medical transcription | deepgram/nova:3-medical | — |