The models you can call depend on two things: your project’s region and language,
and how each model runs. A model runs one of three ways, hosted by SLNG in your
region, proxied through SLNG to the provider, or on your own provider account. In
the dashboard these appear as the SLNG models and BYOK tabs on every model
dropdown; in the API the route is part of the model ID.
Prefer an SLNG-hosted model where one fits. It runs in your region and skips the hop
to an outside provider, which is the lowest-latency path. Reach for a proxied or BYOK
route when a model you need is not SLNG-hosted in your region, or when the provider
account must stay in your name.The model ID names where the model runs:
Route
Runs on
slng/deepgram/nova:3-en
SLNG infrastructure, in your region
deepgram/nova:3
The provider, through SLNG. No key required
deepgram/nova:3 + your credential
The provider, on your own account (BYOK)
The slng/ prefix is an API-only form. To run a model on your own account, register
the key first; see Bring your own key.
Each model is offered per region and language, so the list you see is filtered to
what your project supports.
Dashboard
API
CLI
Open your project and open any model dropdown on Listen, Think, or
Speak. Each dropdown lists the models valid for the project’s region and
language, split into the SLNG models and BYOK tabs.
A model dropdown, with the SLNG models and BYOK tabs.
Call the catalog endpoint on any regional base URL. Every region returns the
same catalog, so filter with query parameters: region for where a model
runs, or surface=agent with agent_region and language for the models an
agent can use. See the Catalog API guide. To
browse the same published data in the documentation, see
All models.
From a coding agent, the voiceai CLI lists the
currently deployed models. A ★ marks an SLNG-hosted model; the rest are
proxied through SLNG.
voiceai models --stt
Output
STT models:★ Nova 3 English (slng/deepgram/nova:3-en)★ Nova 3 Spanish (slng/deepgram/nova:3-es)★ Nova 3 Hindi (slng/deepgram/nova:3-hi)★ Nova 3 Indonesian (slng/deepgram/nova:3-id)★ Nova 3 Kannada (slng/deepgram/nova:3-kn)★ Nova 3 Marathi (slng/deepgram/nova:3-mr)★ Nova 3 Multi (slng/deepgram/nova:3-multi)★ Nova 3 Telugu (slng/deepgram/nova:3-te)★ Speechmatics Batch (slng/speechmatics/batch:15.0.0)★ Speechmatics realtime v2 (slng/speechmatics/realtime:v2) Nova 3 (deepgram/nova:3) Nova 3 Medical (deepgram/nova:3-medical) Fish STT (fish/asr:default) Gradium STT (gradium/stt:default) Resonant 1 (reson8/reson8stt:v1) Saaras V3 (sarvam/saaras:v3) STT AI RT V3 (soniox/speech-ai:rt-v3) STT AI RT V4 (soniox/speech-ai:rt-v4) STT AI RT V5 (soniox/speech-ai:rt-v5)
Voices are separate from text to speech models, and each model has its own set.
Pick the model first, then a voice that belongs to it. For the voice catalog, see
Cartesia voices and
Gradium voices.
Catalog API to find models and voices for an agent
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