Voice Infrastructure

SLNG

Secure voice AI infrastructure for running STT, TTS, model routing, and managed voice agents through one API.

Voice InfrastructureActive
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websitedocspricing

speech.dev has not published an operational assessment for this entry yet. Facts below are source-linked where available.

Functional overview

Secure voice AI infrastructure for running STT, TTS, model routing, and managed voice agents through one API. SLNG Confirm deployment model (managed vs self-hosted), realtime APIs, and pricing on vendor documentation.

Best fit

Teams that want a voice infrastructure layer with bundled STT/TTS agent-minute pricing and explicit regional deployment selection.

Watch-outs

  • Telephony remains a separate requirement for phone calls.
  • This facts page does not include speech.dev operational notes yet.
Availability and pricing
Regions (vendor buckets)
North America, Europe, India
Countries
Not listed
Hosting
Saas Vendor Cloud
Languages
en-us, es-es, fr-fr
Billing model
Usage Based
Public list price
Listed on vendor site
Headline rate (single line item)
USD 0.01/agent_minute

SLNG lists 1 cent per agent minute with STT and TTS included for voice agents; plan credits and concurrency add-ons are listed separately.

Last verified 2026-05-24 · vendor pricing

Capabilities
Inbound Callsyes
Outbound Callsyes
Web Callingyes
Sip Trunkingno
Phone Numbersno
Human Handoffyes
Tool Callingyes
Workflow Builderno
Analyticsyes
Evalsno
Integrations and compliance

Stt

deepgramcartesiasoniox

Tts

deepgramelevenlabscartesiasarvam

Llm

bring-your-own

Telephony

bring-your-own
Sources
HomepageDocsApi ReferencePricing